2001 NISSAN X-TRAIL wiring

EC-9
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ECA HO2S1 .................................................................... 671
Component Description ........................................ 671
CONSULT-II Reference Value in Data Monitor Mode
. 671
ECM Terminals and Reference Value .................. 671
Wiring Diagram .................................................... 672
Diagnostic Procedure ........................................... 673
Component Inspection ......................................... 674
Removal and Installation ...................................... 676
HO2S2 .................................................................... 677
Component Description ........................................ 677
CONSULT-II Reference Value in Data Monitor Mode
. 677
ECM Terminals and Reference Value .................. 677
Wiring Diagram .................................................... 678
Diagnostic Procedure ........................................... 679
Component Inspection ......................................... 680
Removal and Installation ...................................... 682
IGNITION SIGNAL .................................................. 683
Component Description ........................................ 683
ECM Terminals and Reference Value .................. 683
Wiring Diagram .................................................... 684
Diagnostic Procedure ........................................... 686
Component Inspection ......................................... 690
Removal and Installation ...................................... 691
EVAP CANISTER PURGE VOLUME CONTROL
SOLENOID VALVE ................................................. 692
Description ........................................................... 692
CONSULT-II Reference Value in Data Monitor Mode
. 692
ECM Terminals and Reference Value .................. 692
Wiring Diagram .................................................... 694
Diagnostic Procedure ........................................... 695
Component Inspection ......................................... 698
Removal and Installation ...................................... 698
IVT CONTROL SOLENOID VALVE ........................ 699
Description ........................................................... 699
CONSULT-II Reference Value in Data Monitor Mode
. 699
ECM Terminals and Reference Value .................. 700
Wiring Diagram .................................................... 701
Diagnostic Procedure ........................................... 702
Component Inspection ......................................... 704
Removal and Installation ...................................... 704
PNP SWITCH .......................................................... 705
Component Description ........................................ 705
CONSULT-II Reference Value in Data Monitor Mode
. 705
ECM Terminals and Reference Value .................. 705
Wiring Diagram ...................................................
. 706
Diagnostic Procedure ........................................... 707
INJECTOR CIRCUIT ............................................... 709
Component Description ........................................ 709
CONSULT-II Reference Value in Data Monitor Mode
. 709
ECM Terminals and Reference Value .................. 709
Wiring Diagram .................................................... 710
Diagnostic Procedure ............................................ 711Component Inspection ..........................................713
Removal and Installation ......................................713
VIAS ........................................................................714
Description ............................................................714
CONSULT-II Reference Value in Data Monitor Mode
.715
ECM Terminals and Reference Value ...................715
Wiring Diagram .....................................................716
Diagnostic Procedure ...........................................717
Component Inspection ..........................................720
Removal and Installation ......................................721
START SIGNAL ......................................................722
CONSULT-II Reference Value in Data Monitor Mode
.722
ECM Terminals and Reference Value ...................722
Wiring Diagram .....................................................723
Diagnostic Procedure ...........................................724
FUEL PUMP CIRCUIT ............................................726
Description ............................................................726
CONSULT-II Reference Value in Data Monitor Mode
.726
ECM Terminals and Reference Value ...................726
Wiring Diagram .....................................................728
Diagnostic Procedure ...........................................729
Component Inspection ..........................................731
Removal and Installation ......................................732
REFRIGERANT PRESSURE SENSOR ..................733
Component Description ........................................733
ECM Terminals and Reference Value ...................733
Wiring Diagram .....................................................734
Diagnostic Procedure ...........................................735
Removal and Installation ......................................736
ELECTRICAL LOAD SIGNAL ................................737
CONSULT-II Reference Value in Data Monitor Mode
.737
ECM Terminals and Reference Value ...................737
Wiring Diagram .....................................................738
Diagnostic Procedure ...........................................740
DATA LINK CONNECTOR ......................................745
Wiring Diagram .....................................................745
EVAPORATIVE EMISSION SYSTEM .....................746
Description ...................................................
.........746
Component Inspection ..........................................748
POSITIVE CRANKCASE VENTILATION ...............749
Description ............................................................749
Component Inspection ..........................................749
SERVICE DATA AND SPECIFICATIONS (SDS) ....751
Fuel Pressure .......................................................751
Idle Speed and Ignition Timing .............................751
Calculated Load Value ..........................................751
Mass Air Flow Sensor ...........................................751
Intake Air Temperature Sensor .............................751
Engine Coolant Temperature Sensor ...................751
Heated Oxygen Sensor 1 Heater .........................751
Heated Oxygen sensor 2 Heater ..........................751
Crankshaft Position Sensor (POS) .......................751
Camshaft Position Sensor (PHASE) ....................752
Throttle Control Motor ...........................................752

EC-10
Injector ..................................................................752
Fuel Pump ............................................................752
QR20(WITH EURO-OBD)
INDEX FOR DTC .....................................................753
Alphabetical Index ................................................753
DTC No. Index ......................................................755
PRECAUTIONS .......................................................757
Precautions for Supplemental Restraint System
(SRS) “AIR BAG” and “SEAT BELT PRE-TEN-
SIONER” ...............................................................757
On Board Diagnostic (OBD) System of Engine and
A/T ........................................................................757
Precaution ............................................................757
Wiring Diagrams and Trouble Diagnosis ..............760
PREPARATION .......................................................761
Special Service Tools ...........................................761
Commercial Service Tools ....................................761
ENGINE CONTROL SYSTEM ................................763
System Diagram ...................................................763
Vacuum Hose Drawing .........................................764
System Chart ........................................................765
Multiport Fuel Injection (MFI) System ...................765
Electronic Ignition (EI) System .............................768
Air Conditioning Cut Control .................................768
Fuel Cut Control (at No Load and High Engine
Speed) ..................................................................769
CAN Communication ............................................769
BASIC SERVICE PROCEDURE .............................771
Idle Speed and Ignition Timing Check ..................771
Accelerator Pedal Released Position Learning ....772
Throttle Valve Closed Position Learning ...............772
Idle Air Volume Learning ......................................772
Fuel Pressure Check ............................................775
ON BOARD DIAGNOSTIC (OBD) SYSTEM ..........777
Introduction ...........................................................777
Two Trip Detection Logic ......................................777
Emission-related Diagnostic Information ..............778
NATS (Nissan Anti-theft System) ..........................790
Malfunction Indicator (MI) .....................................790
OBD System Operation Chart ..............................793
TROUBLE DIAGNOSIS ..........................................799
Trouble Diagnosis Introduction .............................799
DTC Inspection Priority Chart ...............................802
Fail-safe Chart ......................................................803
Basic Inspection ...................................................805
Symptom Matrix Chart ..........................................809
Engine Control Component Parts Location ..........813
Circuit Diagram .....................................................817
ECM Harness Connector Terminal Layout ...........819
ECM Terminals and Reference Value ...................819
CONSULT-II Function ...........................................826
Generic Scan Tool (GST) Function .......................836
CONSULT-II Reference Value in Data Monitor .....838
Major Sensor Reference Graph in Data Monitor
Mode .....................................................................840
TROUBLE DIAGNOSIS - SPECIFICATION VALUE .843
Description ............................................................843Testing Condition ..................................................843
Inspection Procedure ........................................... .843
Diagnostic Procedure ............................................844
TROUBLE DIAGNOSIS FOR INTERMITTENT INCI-
DENT .......................................................................847
Description ............................................................847
Diagnostic Procedure ............................................847
POWER SUPPLY CIRCUIT FOR ECM ...................848
Wiring Diagram .....................................................848
ECM Terminals and Reference Value ...................849
Diagnostic Procedure ............................................849
Component Inspection ..........................................853
DTC U1000 CAN COMMUNICATION LINE ............854
Description ............................................................854
On Board Diagnosis Logic ....................................854
DTC Confirmation Procedure ................................854
Wiring Diagram .....................................................855
Diagnostic Procedure ............................................856
DTC P0011 IVT CONTROL .....................................857
Description ............................................................857
CONSULT-II Reference Value in Data Monitor Mode
.857
ECM Terminals and Reference Value ...................857
On Board Diagnosis Logic ....................................858
DTC Confirmation Procedure ................................858
Diagnostic Procedure ............................................859
DTC P0031, P0032 HO2S1 HEATER ......................860
Description ............................................................860
CONSULT-II Reference Value in Data Monitor Mode
.860
ECM Terminals and Reference Value ...................860
On Board Diagnosis Logic ....................................861
DTC Confirmation Procedure ................................861
Wiring Diagram .....................................................862
Diagnostic Procedure ............................................863
Component Inspection ..........................................864
Removal and Installation .......................................864
DTC P0037, P0038 HO2S2 HEATER .....................
.865
Description ............................................................865
CONSULT-II Reference Value in Data Monitor Mode
.865
ECM Terminals and Reference Value ...................865
On Board Diagnosis Logic ....................................866
DTC Confirmation Procedure ................................866
Wiring Diagram .....................................................867
Diagnostic Procedure ............................................868
Component Inspection ..........................................869
Removal and Installation .......................................869
DTC P0102, P0103 MAF SENSOR .........................870
Component Description ........................................870
CONSULT-II Reference Value in Data Monitor Mode
.870
ECM Terminals and Reference Value ...................870
On Board Diagnosis Logic ....................................870
DTC Confirmation Procedure ................................871
Wiring Diagram .....................................................872
Diagnostic Procedure ............................................873
Component Inspection ..........................................874
Removal and Installation .......................................875

EC-11
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ECA DTC P0112, P0113 IAT SENSOR ........................... 876
Component Description ........................................ 876
On Board Diagnosis Logic ................................... 876
DTC Confirmation Procedure ............................... 876
Wiring Diagram .................................................... 878
Diagnostic Procedure ........................................... 879
Component Inspection ......................................... 880
Removal and Installation ...................................... 880
DTC P0117, P0118 ECT SENSOR ......................... 881
Component Description ........................................ 881
On Board Diagnosis Logic ................................... 881
DTC Confirmation Procedure ............................... 882
Wiring Diagram .................................................... 883
Diagnostic Procedure ........................................... 884
Component Inspection ......................................... 885
Removal and Installation ...................................... 885
DTC P0120 TP SENSOR ........................................ 886
Component Description ........................................ 886
CONSULT-II Reference Value in Data Monitor Mode
. 886
ECM Terminals and Reference Value .................. 886
On Board Diagnosis Logic ................................... 887
DTC Confirmation Procedure ............................... 887
Wiring Diagram .................................................... 889
Diagnostic Procedure ........................................... 890
Component Inspection ......................................... 892
Remove and Installation ....................................... 892
DTC P0121 APP SENSOR ..................................... 893
Component Description ........................................ 893
CONSULT-II Reference Value in Data Monitor Mode
. 893
ECM Terminals and Reference Value .................. 893
On Board Diagnosis Logic ................................... 894
DTC Confirmation Procedure ............................... 894
Wiring Diagram .................................................... 895
Diagnostic Procedure ........................................... 896
Component Inspection ......................................... 897
Remove and Installation ....................................... 898
DTC P0132 HO2S1 ................................................. 899
Component Description ........................................ 899
CONSULT-II Reference Value in Data Monitor Mode
. 899
ECM Terminals and Reference Value .................. 899
On Board Diagnosis Logic ................................... 900
DTC Confirmation Procedure ............................... 900
Wiring Diagram .................................................... 901
Diagnostic Procedure ........................................... 902
Component Inspection ......................................... 903
Removal and Installation ...................................... 904
DTC P0133 HO2S1 ...............................................
.. 905
Component Description ........................................ 905
CONSULT-II Reference Value in Data Monitor Mode
. 905
ECM Terminals and Reference Value .................. 905
On Board Diagnosis Logic ................................... 906
DTC Confirmation Procedure ............................... 906
Overall Function Check ........................................ 907
Wiring Diagram .................................................... 908
Diagnostic Procedure ........................................... 909Component Inspection ..........................................911
Removal and Installation ......................................913
DTC P0134 HO2S1 ................................................ .914
Component Description ........................................914
CONSULT-II Reference Value in Data Monitor Mode
.914
ECM Terminals and Reference Value ...................914
On Board Diagnosis Logic ....................................915
DTC Confirmation Procedure ...............................915
Overall Function Check ........................................916
Wiring Diagram .....................................................917
Diagnostic Procedure ...........................................918
Component Inspection ..........................................919
Removal and Installation ......................................920
DTC P0138 HO2S2 ................................................ .921
Component Description ........................................921
CONSULT-II Reference Value in Data Monitor Mode
.921
ECM Terminals and Reference Value ...................921
On Board Diagnosis Logic ....................................921
DTC Confirmation Procedure ...............................922
Overall Function Check ........................................922
Wiring Diagram .....................................................923
Diagnostic Procedure ...........................................924
Component Inspection ..........................................925
Removal and Installation ......................................926
DTC P0139 HO2S2 ................................................ .927
Component Description ........................................927
CONSULT-II Reference Value in Data Monitor Mode
.927
ECM Terminals and Reference Value ...................927
On Board Diagnosis Logic ....................................927
DTC Confirmation Procedure ...............................928
Overall Function Check ........................................929
Wiring Diagram .....................................................930
Diagnostic Procedure ...........................................931
Component Inspection ..........................................932
Removal and Installation ......................................933
DTC P0171 FUEL INJECTION SYSTEM FUNCTION .934
On Board Diagnosis Logic ....................................934
DTC Confirmation Procedure ...............................934
Wiring Diagram .....................................................936
Diagnostic Procedure ...........................................937
DTC P0172 FUEL INJECTION SYSTEM FUNCTION .940
On Board Diagnosis Logic ....................................940
DTC Confirmation Procedure ...............................940
Wiring Diagram .....................................................942
Diagnostic Procedure ...........................................943
DTC P0300 - P0304 MULTIPLE CYLINDER MIS-
FIRE, NO. 1 - 4 CYLINDER MISFIRE .....................946
On Board Diagnosis Logic ....................................946
DTC Confirmation Procedure ...............................946
Diagnostic Procedure ...........................................947
DTC P0327, P0328 KS ...........................................951
Component Description ........................................951
ECM Terminals and Reference Value ...................951
On Board Diagnosis Logic ....................................951
DTC Confirmation Procedure ...............................951
Wiring Diagram .....................................................953

EC-12
Diagnostic Procedure ...........................................954
Component Inspection ..........................................955
Removal and Installation ......................................955
DTC P0335 CKP SENSOR (POS) ..........................956
Component Description ........................................956
CONSULT-II Reference Value in Data Monitor Mode
.956
ECM Terminals and Reference Value ...................956
On Board Diagnosis Logic ....................................957
DTC Confirmation Procedure ...............................957
Wiring Diagram .....................................................958
Diagnostic Procedure ...........................................959
Component Inspection ..........................................961
Removal and Installation ......................................961
DTC P0340 CMP SENSOR (PHASE) .....................962
Component Description ........................................962
ECM Terminals and Reference Value ...................962
On Board Diagnosis Logic ....................................962
DTC Confirmation Procedure ...............................963
Wiring Diagram .....................................................964
Diagnostic Procedure ...........................................965
Component Inspection ..........................................967
Removal and Installation ......................................967
DTC P0420 THREE WAY CATALYST FUNCTION . 968
On Board Diagnosis Logic ....................................968
DTC Confirmation Procedure ...............................968
Overall Function Check ........................................969
Diagnostic Procedure ...........................................970
DTC P0444, P0445 EVAP CANISTER PURGE VOL-
UME CONTROL SOLENOID VALVE ......................972
Description ............................................................972
CONSULT-II Reference Value in Data Monitor Mode
.972
ECM Terminals and Reference Value ...................972
On Board Diagnosis Logic ....................................973
DTC Confirmation Procedure ...............................973
Wiring Diagram .....................................................974
Diagnostic Procedure ...........................................975
Component Inspection ..........................................976
Removal and Installation ......................................977
DTC P0500 VSS ......................................................978
Component Description ........................................978
ECM Terminals and Reference Value ...................978
On Board Diagnosis Logic ....................................978
DTC Confirmation Procedure ...............................978
Overall Function Check ........................................979
Wiring Diagram .....................................................980
Diagnostic Procedure ...........................................982
DTC P0550 PSP SENSOR ......................................983
Component Description ........................................983
CONSULT-II Reference Value in Data Monitor Mode
.983
ECM Terminals and Reference Value ...................983
On Board Diagnosis Logic ....................................983
DTC Confirmation Procedure ...............................983
Wiring Diagram .....................................................985
Diagnostic Procedure ...........................................986
Component Inspection ..........................................987DTC P0605 ECM .....................................................988
Component Description ........................................988
On Board Diagnosis Logic ....................................988
DTC Confirmation Procedure ................................988
Diagnostic Procedure ............................................989
DTC P0650 MI .........................................................991
Component Description ........................................991
On Board Diagnosis Logic ....................................991
DTC Confirmation Procedure ................................991
Wiring Diagram .....................................................992
Diagnostic Procedure ............................................993
DTC P1065 ECM POWER SUPPLY ........................995
Component Description ........................................995
On Board Diagnosis Logic ....................................995
DTC Confirmation Procedure ................................995
Wiring Diagram .....................................................996
Diagnostic Procedure ............................................997
DTC P1102 MAF SENSOR .....................................999
Component Description ........................................999
CONSULT-II Reference Value in Data Monitor Mode
.999
ECM Terminals and Reference Value ...................999
On Board Diagnosis Logic ...................................1000
DTC Confirmation Procedure ...............................1000
Wiring Diagram ....................................................1001
Diagnostic Procedure ........................................... 1002
Component Inspection .........................................1003
Removal and Installation ......................................1004
DTC P1111 IVT CONTROL SOLENOID VALVE ....1005
Component Description .......................................1005
CONSULT-II Reference Value in Data Monitor Mode
1005
ECM Terminals and Reference Value ..................1005
On Board Diagnosis Logic ...................................1005
DTC Confirmation Procedure ...............................1006
Wiring Diagram ....................................................1007
Diagnostic Procedure ........................................... 1008
Component Inspection .........................................1009
Removal and Installation ......................................1009
DTC P1121 ELECTRIC THROTTLE CONTROL
ACTUATOR ............................................................1010
Description ...........................................................1010
On Board Diagnosis Logic ...................................1010
DTC Confirmation Procedure ...............................1010
Diagnostic Procedure ........................................... 1011
DTC P1122 ELECTRIC THROTTLE CONTROL
FUNCTION .............................................................1012
Description ...........................................................1012
ECM Terminals and Reference Value ..................1012
On Board Diagnosis Logic ...................................1012
DTC Confirmation Procedure ...............................1013
Wiring Diagram ....................................................1014
Diagnostic Procedure ........................................... 1015
Component Inspection .........................................1017
DTC P1123 THROTTLE CONTROL MOTOR RELAY 1018
Component Description .......................................1018
CONSULT-II Reference Value in Data Monitor Mode
1018
ECM Terminals and Reference Value ..................

EC-13
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ECA On Board Diagnosis Logic ..................................1018
DTC Confirmation Procedure ..............................1018
Wiring Diagram ...................................................1020
Diagnostic Procedure ..........................................1021
Component Inspection ........................................1022
DTC P1143 HO2S1 ................................................1023
Component Description .......................................1023
CONSULT-II Reference Value in Data Monitor Mode
1023
ECM Terminals and Reference Value .................1023
On Board Diagnosis Logic ..................................1024
DTC Confirmation Procedure ..............................1024
Overall Function Check .......................................1025
Diagnostic Procedure ..........................................1025
Component Inspection ........................................1027
Removal and Installation .....................................1028
DTC P1144 HO2S1 ................................................1029
Component Description .......................................1029
CONSULT-II Reference Value in Data Monitor Mode
1029
ECM Terminals and Reference Value .................1029
On Board Diagnosis Logic ..................................1030
DTC Confirmation Procedure ..............................1030
Overall Function Check .......................................1031
Diagnostic Procedure ..........................................1031
Component Inspection ........................................1033
Removal and Installation .....................................1034
DTC P1146 HO2S2 ................................................1035
Component Description .......................................1035
CONSULT-II Reference Value in Data Monitor Mode
1035
ECM Terminals and Reference Value .................1035
On Board Diagnosis Logic ..................................1035
DTC Confirmation Procedure ..............................1036
Overall Function Check .......................................1037
Wiring Diagram ...................................................1038
Diagnostic Procedure ..........................................1039
Component Inspection ........................................1040
Removal and Installation .....................................1041
DTC P1147 HO2S2 ................................................1042
Component Description .......................................1042
CONSULT-II Reference Value in Data Monitor Mode
1042
ECM Terminals and Reference Value .................1042
On Board Diagnosis Logic ..................................1042
DTC Confirmation Procedure ..............................1043
Overall Function Check .......................................1044
Wiring Diagram ...................................................1045
Diagnostic Procedure ..........................................1046
Component Inspection ........................................1047
Removal and Installation .....................................1048
DTC P1212 ESP/TCS/ABS COMMUNICATION
LINE .......................................................................1049
Description ..........................................................1049
On Board Diagnosis Logic ..................................1049
DTC Confirmation Procedure ..............................1049
Diagnostic Procedure ..........................................1049
DTC P1217 ENGINE OVER TEMPERATURE ......1050
System Description .............................................1050CONSULT-II Reference Value in Data Monitor Mode
1050
ECM Terminals and Reference Value ..................1051
On Board Diagnosis Logic ...................................1051
Overall Function Check .......................................1052
Wiring Diagram ....................................................1054
Diagnostic Procedure ..........................................1055
Main 12 Causes of Overheating ..........................1062
Component Inspection .........................................1063
DTC P1706 PNP SWITCH .....................................1064
Component Description .......................................1064
CONSULT-II Reference Value in Data Monitor Mode
1064
ECM Terminals and Reference Value ..................1064
On Board Diagnosis Logic ...................................1064
DTC Confirmation Procedure ..............................1064
Overall Function Check .......................................1065
Wiring Diagram ....................................................1066
Diagnostic Procedure ..........................................1067
DTC P1805 BRAKE SWITCH ................................1068
Description ...........................................................1068
CONSULT-II Reference Value in Data Monitor Mode
1068
ECM Terminals and Reference Value ..................1068
On Board Diagnosis Logic ...................................1068
DTC Confirmation Procedure ..............................1068
Wiring Diagram ....................................................1070
Diagnostic Procedure ..........................................1071
Component Inspection .........................................1072
IGNITION SIGNAL .................................................1074
Component Description .......................................1074
ECM Terminals and Reference Value ..................1074
Wiring Diagram ....................................................1075
Diagnostic Procedure ..........................................1077
Component Inspection .........................................1081
Removal and Installation .....................................1082
INJECTOR CIRCUIT ..............................................1083
Component Description .......................................1083
CONSULT-II Reference Value in Data Monitor Mode
1083
ECM Terminals and Reference Value ..................1083
Wiring Diagram ....................................................
1084
Diagnostic Procedure ..........................................1085
Component Inspection .........................................1087
Removal and Installation .....................................1087
START SIGNAL .....................................................1088
CONSULT-II Reference Value in Data Monitor Mode
1088
ECM Terminals and Reference Value ..................1088
Wiring Diagram ....................................................1089
Diagnostic Procedure ..........................................1090
FUEL PUMP CIRCUIT ...........................................1092
Description ...........................................................1092
CONSULT-II Reference Value in Data Monitor Mode
1092
ECM Terminals and Reference Value ..................1092
Wiring Diagram ....................................................1094
Diagnostic Procedure ..........................................1095

EC-14
Component Inspection .........................................1097
Removal and Installation .....................................1098
REFRIGERANT PRESSURE SENSOR .................1099
Component Description .......................................1099
ECM Terminals and Reference Value ..................1099
Wiring Diagram ....................................................11 0 0
Diagnostic Procedure ..........................................11 0 1
Removal and Installation .....................................11 0 2
ELECTRICAL LOAD SIGNAL ...............................110 3
CONSULT-II Reference Value in Data Monitor Mode
11 0 3
ECM Terminals and Reference Value ..................11 0 3
Wiring Diagram ....................................................11 0 4
Diagnostic Procedure ..........................................11 0 6
DATA LINK CONNECTOR .....................................1111
Wiring Diagram ....................................................1111
EVAPORATIVE EMISSION SYSTEM ....................111 2
Description ...........................................................111 2
Component Inspection .........................................111 4
POSITIVE CRANKCASE VENTILATION ..............111 5
Description ...........................................................111 5
Component Inspection .........................................111 5
SERVICE DATA AND SPECIFICATIONS (SDS) ...111 7
Fuel Pressure ......................................................111 7
Idle Speed and Ignition Timing ............................111 7
Calculated Load Value .........................................111 7
Mass Air Flow Sensor ..........................................111 7
Intake Air Temperature Sensor ............................111 7
Engine Coolant Temperature Sensor ..................111 7
Heated Oxygen Sensor 1 Heater ........................111 7
Heated Oxygen sensor 2 Heater .........................111 7
Crankshaft Position Sensor (POS) ......................111 7
Camshaft Position Sensor (PHASE) ...................111 7
Throttle Control Motor ..........................................111 8
Injector .................................................................111 8
Fuel Pump ...........................................................111 8
QR20(WITHOUT EURO-OBD)
INDEX FOR DTC ....................................................111 9
Alphabetical Index ...............................................111 9
DTC No. Index .....................................................11 2 0
PRECAUTIONS ......................................................112 1
Precautions for Supplemental Restraint System
(SRS) “AIR BAG” and “SEAT BELT PRE-TEN-
SIONER” ..............................................................11 2 1
On Board Diagnostic (OBD) System of Engine and
A/T .......................................................................11 2 1
Precaution ...........................................................11 2 1
Wiring Diagrams and Trouble Diagnosis .............11 2 4
PREPARATION ......................................................112 5
Special Service Tools .......................................... 11 2 5
Commercial Service Tools ...................................11 2 5
ENGINE CONTROL SYSTEM ...............................112 7
System Diagram ..................................................11 2 7
Vacuum Hose Drawing ........................................11 2 8
System Chart .......................................................11 2 9
Multiport Fuel Injection (MFI) System ..................11 2 9
Electronic Ignition (EI) System ............................11 3 2Air Conditioning Cut Control ................................11 3 2
Fuel Cut Control (at No Load and High Engine
Speed) .................................................................11 3 3
CAN Communication ...........................................11 3 3
BASIC SERVICE PROCEDURE ............................11 35
Idle Speed and Ignition Timing Check .................11 3 5
Accelerator Pedal Released Position Learning ....11 3 6
Throttle Valve Closed Position Learning ..............11 3 6
Idle Air Volume Learning ......................................11 3 7
Fuel Pressure Check ...........................................11 3 9
ON BOARD DIAGNOSTIC (OBD) SYSTEM ..........11 41
Introduction ..........................................................11 4 1
Two Trip Detection Logic ......................................11 4 1
Emission-related Diagnostic Information .............11 4 1
NATS (Nissan Anti-theft System) .........................11 4 3
Malfunction Indicator (MI) ....................................11 4 4
TROUBLE DIAGNOSIS .........................................11 47
Trouble Diagnosis Introduction ............................11 4 7
DTC Inspection Priority Chart ..............................11 5 0
Fail-safe Chart .....................................................11 5 1
Basic Inspection ...................................................11 5 2
Symptom Matrix Chart .........................................11 5 6
Engine Control Component Parts Location ..........11 6 0
Circuit Diagram ....................................................11 6 4
ECM Harness Connector Terminal Layout ...........11 6 6
ECM Terminals and Reference Value ..................11 6 6
CONSULT-II Function ..........................................
11 7 3
CONSULT-II Reference Value in Data Monitor ....11 8 2
Major Sensor Reference Graph in Data Monitor
Mode ....................................................................11 8 5
TROUBLE DIAGNOSIS - SPECIFICATION VALUE 11 88
Description ...........................................................11 8 8
Testing Condition .................................................11 8 8
Inspection Procedure ........................................... 11 8 8
Diagnostic Procedure ........................................... 11 8 9
TROUBLE DIAGNOSIS FOR INTERMITTENT INCI-
DENT ......................................................................11 92
Description ...........................................................11 9 2
Diagnostic Procedure ........................................... 11 9 2
POWER SUPPLY CIRCUIT FOR ECM ..................11 93
Wiring Diagram ....................................................11 9 3
ECM Terminals and Reference Value ..................11 9 4
Diagnostic Procedure ........................................... 11 9 4
Component Inspection .........................................11 9 8
DTC U1000 CAN COMMUNICATION LINE ...........11 99
Description ...........................................................11 9 9
On Board Diagnosis Logic ...................................11 9 9
DTC Confirmation Procedure ...............................11 9 9
Wiring Diagram ....................................................1200
Diagnostic Procedure ........................................... 1201
DTC P0102, P0103 MAF SENSOR ........................1202
Component Description .......................................1202
CONSULT-II Reference Value in Data Monitor Mode
1202
ECM Terminals and Reference Value ..................1202
On Board Diagnosis Logic ...................................1203
DTC Confirmation Procedure ...............................1203
Wiring Diagram ....................................................1205
Diagnostic Procedure ........................................... 1206

EC-15
C
D
E
F
G
H
I
J
K
L
M
ECA Component Inspection ........................................1208
Removal and Installation .....................................1208
DTC P0117, P0118 ECT SENSOR ........................1209
Component Description .......................................1209
On Board Diagnosis Logic ..................................1209
DTC Confirmation Procedure ..............................1210
Wiring Diagram ...................................................1211
Diagnostic Procedure ..........................................1212
Component Inspection ........................................1213
Removal and Installation .....................................1213
DTC P0120 TP SENSOR .......................................1214
Component Description .......................................1214
CONSULT-II Reference Value in Data Monitor Mode
1214
ECM Terminals and Reference Value .................1214
On Board Diagnosis Logic ..................................1215
DTC Confirmation Procedure ..............................1215
Wiring Diagram ...................................................1218
Diagnostic Procedure ..........................................1219
Component Inspection ........................................1221
Remove and Installation ......................................1221
DTC P0121 APP SENSOR ....................................1222
Component Description .......................................1222
CONSULT-II Reference Value in Data Monitor Mode
1222
ECM Terminals and Reference Value .................1222
On Board Diagnosis Logic ..................................1223
DTC Confirmation Procedure ..............................1223
Wiring Diagram ...................................................1225
Diagnostic Procedure ..........................................1226
Component Inspection ........................................1228
Remove and Installation ......................................1228
DTC P0134 HO2S1 ................................................1229
Component Description .......................................1229
CONSULT-II Reference Value in Data Monitor Mode
1229
ECM Terminals and Reference Value .................1229
On Board Diagnosis Logic ..................................1230
Overall Function Check .......................................1230
Wiring Diagram ...................................................1231
Diagnostic Procedure ..........................................1232
Component Inspection ........................................1233
Removal and Installation .....................................1234
DTC P0327, P0328 KS ..........................................1235
Component Description .......................................1235
ECM Terminals and Reference Value .................1235
On Board Diagnosis Logic ..................................1235
DTC Confirmation Procedure ..............................1235
Wiring Diagram ...................................................1237
Diagnostic Procedure ..........................................1238
Component Inspection ........................................1239
Removal and Installation .....................................1239
DTC P0335 CKP SENSOR (POS) .........................1240
Component Description .......................................1240
CONSULT-II Reference Value in Data Monitor Mode
1240
ECM Terminals and Reference Value .................1240
On Board Diagnosis Logic ..................................1241
DTC Confirmation Procedure ..............................1241Wiring Diagram ....................................................1242
Diagnostic Procedure ..........................................1243
Component Inspection .........................................1245
Removal and Installation .....................................1245
DTC P0340 CMP SENSOR (PHASE) ....................1246
Component Description .......................................1246
ECM Terminals and Reference Value ..................1246
On Board Diagnosis Logic ...................................1246
DTC Confirmation Procedure ..............................1247
Wiring Diagram ....................................................1248
Diagnostic Procedure ..........................................1249
Component Inspection .........................................1251
Removal and Installation .....................................1251
DTC P0500 VSS .....................................................1252
Component Description .......................................1252
ECM Terminals and Reference Value ..................1252
On Board Diagnosis Logic ...................................1252
DTC Confirmation Procedure ..............................1252
Overall Function Check .......................................1253
Wiring Diagram ....................................................1254
Diagnostic Procedure ..........................................1256
DTC P0550 PSP SENSOR ....................................1257
Component Description .......................................1257
CONSULT-II Reference Value in Data Monitor Mode
1257
ECM Terminals and Reference Value ..................1257
On Board Diagnosis Logic ...................................1257
DTC Confirmation Procedure ..............................1257
Wiring Diagram ....................................................1259
Diagnostic Procedure ..........................................1260
Component Inspection .........................................1261
DTC P0605 ECM ....................................................1262
Component Description .......................................1262
On Board Diagnosis Logic ...................................1262
DTC Confirmation Procedure ..............................1262
Diagnostic Procedure ..........................................1264
DTC P0650 MI ........................................................1265
Component Description .......................................1265
On Board Diagnosis Logic ...................................1265
DTC Confirmation Procedure ..............................1265
Overall Function Check .......................................1265
Wiring Diagram ....................................................1266
Diagnostic Procedure ..........................................1267
DTC P1065 ECM POWER SUPPLY ......................1269
Component Description .......................................1269
On Board Diagnosis Logic ...................................1269
DTC Confirmation Procedure ..............................1269
Wiring Diagram ....................................................1270
Diagnostic Procedure ..........................................1271
DTC P1121 ELECTRIC THROTTLE CONTROL
ACTUATOR ............................................................1273
Description ...........................................................1273
On Board Diagnosis Logic ...................................1273
DTC Confirmation Procedure ..............................1273
Diagnostic Procedure ..........................................1274
DTC P1122 ELECTRIC THROTTLE CONTROL
FUNCTION .............................................................1275
Description ...........................................................1275
ECM Terminals and Reference Value ..................1275

EC-16
On Board Diagnosis Logic ...................................1275
DTC Confirmation Procedure ..............................1276
Wiring Diagram ....................................................1277
Diagnostic Procedure ..........................................1278
Component Inspection .........................................1280
DTC P1123 THROTTLE CONTROL MOTOR RELAY 1281
Component Description .......................................1281
CONSULT-II Reference Value in Data Monitor Mode
1281
ECM Terminals and Reference Value ..................1281
On Board Diagnosis Logic ...................................1281
DTC Confirmation Procedure ..............................1281
Wiring Diagram ....................................................1283
Diagnostic Procedure ..........................................1284
Component Inspection .........................................1285
DTC P1212 ESP/TCS/ABS COMMUNICATION
LINE ........................................................................1286
Description ...........................................................1286
On Board Diagnosis Logic ...................................1286
DTC Confirmation Procedure ..............................1286
Diagnostic Procedure ..........................................1286
DTC P1217 ENGINE OVER TEMPERATURE .......1287
System Description ..............................................1287
CONSULT-II Reference Value in Data Monitor Mode
1287
ECM Terminals and Reference Value ..................1288
On Board Diagnosis Logic ...................................1288
Overall Function Check .......................................1289
Wiring Diagram ....................................................1291
Diagnostic Procedure ..........................................1292
Main 12 Causes of Overheating ..........................1299
Component Inspection .........................................1300
DTC P1805 BRAKE SWITCH ................................1301
Description ...........................................................1301
CONSULT-II Reference Value in Data Monitor Mode
1301
ECM Terminals and Reference Value ..................1301
On Board Diagnosis Logic ...................................1301
FAIL-SAFE MODE ...............................................1301
DTC Confirmation Procedure ..............................1301
Wiring Diagram ....................................................1303
Diagnostic Procedure ..........................................1304
Component Inspection .........................................1305
HO2S1 HEATER ....................................................1307
Description ...........................................................1307
CONSULT-II Reference Value in Data Monitor Mode
1307
ECM Terminals and Reference Value ..................1307
Wiring Diagram ....................................................1308
Diagnostic Procedure ..........................................1309
Component Inspection .........................................1311
Removal and Installation .....................................1311
HO2S2 HEATER ....................................................1312
Description ...........................................................1312
CONSULT-II Reference Value in Data Monitor Mode
1312
ECM Terminals and Reference Value ..................1312
Wiring Diagram ....................................................1313
Diagnostic Procedure ..........................................1314Component Inspection .........................................1315
Removal and Installation ......................................1315
IAT SENSOR ..........................................................1316
Component Description .......................................1316
Wiring Diagram ....................................................1317
Diagnostic Procedure ........................................... 1318
Component Inspection .........................................1319
Removal and Installation ......................................1319
HO2S1 ....................................................................1320
Component Description .......................................1320
CONSULT-II Reference Value in Data Monitor Mode
1320
ECM Terminals and Reference Value ..................1320
Wiring Diagram ....................................................1321
Diagnostic Procedure ........................................... 1322
Component Inspection .........................................1323
Removal and Installation ......................................1325
HO2S2 ....................................................................1326
Component Description .......................................1326
CONSULT-II Reference Value in Data Monitor Mode
1326
ECM Terminals and Reference Value ..................1326
Wiring Diagram ....................................................1327
Diagnostic Procedure ........................................... 1328
Component Inspection .........................................1329
Removal and Installation ......................................1330
IGNITION SIGNAL .................................................1331
Component Description .......................................1331
ECM Terminals and Reference Value ..................1331
Wiring Diagram ....................................................1332
Diagnostic Procedure ........................................... 1334
Component Inspection .........................................1338
Removal and Installation ......................................1339
EVAP CANISTER PURGE VOLUME CONTROL
SOLENOID VALVE ................................................. 1340
Description ...........................................................1340
CONSULT-II Reference Value in Data Monitor Mode
1340
ECM Terminals and Reference Value ..................1340
Wiring Diagram ....................................................1342
Diagnostic Procedure ........................................... 1343
Component Inspection .........................................1346
Removal and Installation ......................................1346
IVT CONTROL SOLENOID VALVE .......................1347
Description ...........................................................1347
CONSULT-II Reference Value in Data Monitor Mode
1347
ECM Terminals and Reference Value ..................1348
Wiring Diagram ....................................................1349
Diagnostic Procedure ........................................... 1350
Component Inspection .........................................1352
Removal and Installation ......................................1352
PNP SWITCH .........................................................1353
Component Description .......................................1353
CONSULT-II Reference Value in Data Monitor Mode
1353
ECM Terminals and Reference Value ..................1353
Wiring Diagram ....................................................1354
Diagnostic Procedure ........................................... 1355