2001 NISSAN ALMERA N16 P0120

CONSULT-II Reference Value in Data Monitor
Mode ........................................................................152
ECM Terminals and Reference Value .....................152
On Board Diagnosis Logic.......................................152
Fail-safe Mode .........................................................153
DTC Confirmation Procedure ..................................153
Wiring Diagram ........................................................154
Diagnostic Procedure ..............................................155
Component Inspection .............................................157
DTC P0110 INTAKE AIR TEMPERATURE
SENSOR......................................................................158
Component Description ...........................................158
On Board Diagnosis Logic.......................................158
DTC Confirmation Procedure ..................................158
Wiring Diagram ........................................................160
Diagnostic Procedure ..............................................161
Component Inspection .............................................162
DTC P0115 ENGINE COOLANT TEMPERATURE
SENSOR (ECTS).........................................................163
Component Description ...........................................163
CONSULT-II Reference Value in Data Monitor
Mode ........................................................................163
On Board Diagnosis Logic.......................................163
Fail-safe Mode .........................................................164
DTC Confirmation Procedure ..................................164
Wiring Diagram ........................................................165
Diagnostic Procedure ..............................................166
Component Inspection .............................................167
DTC P0120 THROTTLE POSITION SENSOR...........168
Component Description ...........................................168
CONSULT-II Reference Value in Data Monitor
Mode ........................................................................168
ECM Terminals and Reference Value .....................169
On Board Diagnosis Logic.......................................169
Fail-safe Mode .........................................................169
DTC Confirmation Procedure ..................................169
Wiring Diagram ........................................................171
Diagnostic Procedure ..............................................172
Component Inspection .............................................174
DTC P0130 HEATED OXYGEN SENSOR 1
(FRONT) (CIRCUIT).....................................................176
Component Description ...........................................176
CONSULT-II Reference Value in Data Monitor
Mode ........................................................................176
ECM Terminals and Reference Value .....................176
On Board Diagnosis Logic.......................................177
DTC Confirmation Procedure ..................................177
Overall Function Check ...........................................178
Wiring Diagram ........................................................179
Diagnostic Procedure ..............................................180
Component Inspection .............................................181DTC P0131 HEATED OXYGEN SENSOR 1
(FRONT) (LEAN SHIFT MONITORING).....................183
Component Description ...........................................183
CONSULT-II Reference Value in Data Monitor
Mode ........................................................................183
ECM Terminals and Reference Value .....................183
On Board Diagnosis Logic.......................................184
DTC Confirmation Procedure ..................................184
Overall Function Check ...........................................185
Diagnostic Procedure ..............................................185
Component Inspection .............................................187
DTC P0132 HEATED OXYGEN SENSOR 1
(FRONT) (RICH SHIFT MONITORING)......................189
Component Description ...........................................189
CONSULT-II Reference Value in Data Monitor
Mode ........................................................................189
ECM Terminals and Reference Value .....................189
On Board Diagnosis Logic.......................................190
DTC Confirmation Procedure ..................................190
Overall Function Check ...........................................191
Diagnostic Procedure ..............................................191
Component Inspection .............................................193
DTC P0133 HEATED OXYGEN SENSOR 1
(FRONT).......................................................................195
Component Description ...........................................195
CONSULT-II Reference Value in Data Monitor
Mode ........................................................................195
ECM Terminals and Reference Value .....................195
On Board Diagnosis Logic.......................................196
DTC Confirmation Procedure ..................................196
Overall Function Check ...........................................197
Wiring Diagram ........................................................198
Diagnostic Procedure ..............................................199
Component Inspection .............................................201
DTC P0134 HEATED OXYGEN SENSOR 1
(FRONT) (HIGH VOLTAGE)........................................203
Component Description ...........................................203
CONSULT-II Reference Value in Data Monitor
Mode ........................................................................203
ECM Terminals and Reference Value .....................203
On Board Diagnosis Logic.......................................204
DTC Confirmation Procedure ..................................204
Wiring Diagram ........................................................205
Diagnostic Procedure ..............................................206
Component Inspection .............................................207
DTC P0135 HEATED OXYGEN SENSOR 1
(FRONT) HEATER.......................................................209
Description ...............................................................209
CONSULT-II Reference Value in Data Monitor
Mode ........................................................................209
ECM Terminals and Reference Value .....................209
On Board Diagnosis Logic.......................................209
CONTENTS(Cont'd)
EC-2

YD
TROUBLE DIAGNOSIS - INDEX................................492
Alphabetical & P No. Index for DTC .......................492
PRECAUTIONS...........................................................494
Supplemental Restraint System (SRS)²AIR
BAG²and²SEAT BELT PRE-TENSIONER²...........494
Engine Fuel & Emission Control System ................495
Precautions ..............................................................496
Wiring Diagrams and Trouble Diagnosis .................497
PREPARATION...........................................................498
Special Service Tools ..............................................498
ENGINE AND EMISSION CONTROL OVERALL
SYSTEM.......................................................................499
Engine Control Component Parts Location .............499
Circuit Diagram ........................................................502
System Diagram ......................................................503
System Chart ...........................................................504
ENGINE AND EMISSION BASIC CONTROL
SYSTEM DESCRIPTION.............................................505
Fuel Injection Control System .................................505
Fuel Injection Timing Control System......................506
Air Conditioning Cut Control ....................................507
Fuel Cut Control (at no load & high engine
speed) ......................................................................507
Crankcase Ventilation System .................................508
BASIC SERVICE PROCEDURE.................................509
Injection Tube and Injection Nozzle ........................509
Electronic Control Fuel Injection Pump ...................513
Fuel Filter .................................................................520
ON BOARD DIAGNOSTIC SYSTEM
DESCRIPTION.............................................................522
DTC and MI Detection Logic ...................................522
Diagnostic Trouble Code (DTC) ..............................522
Malfunction Indicator (MI) ........................................523
CONSULT-II .............................................................527
TROUBLE DIAGNOSIS - INTRODUCTION................532
Introduction ..............................................................532
Work Flow ................................................................534
TROUBLE DIAGNOSIS - BASIC INSPECTION.........536
Basic Inspection.......................................................536
TROUBLE DIAGNOSIS - GENERAL
DESCRIPTION.............................................................541
Symptom Matrix Chart .............................................541
CONSULT-II Reference Value in Data Monitor
Mode ........................................................................551
Major Sensor Reference Graph in Data Monitor
Mode ........................................................................553
ECM Terminals and Reference Value .....................554
TROUBLE DIAGNOSIS FOR INTERMITTENT
INCIDENT.....................................................................559
Description ...............................................................559
Diagnostic Procedure ..............................................559TROUBLE DIAGNOSIS FOR POWER SUPPLY........560
Main Power Supply and Ground Circuit ..................560
DTC P0100 MASS AIR FLOW SEN...........................566
Component Description ...........................................566
CONSULT-II Reference Value in Data Monitor
Mode ........................................................................566
ECM Terminals and Reference Value .....................566
On Board Diagnosis Logic.......................................566
DTC Confirmation Procedure ..................................566
Wiring Diagram ........................................................568
Diagnostic Procedure ..............................................569
DTC P0115 COOLANT TEMP SEN............................572
Description ...............................................................572
On Board Diagnosis Logic.......................................572
DTC Confirmation Procedure ..................................572
Wiring Diagram ........................................................574
Diagnostic Procedure ..............................................575
DTC P0120 ACCEL POS SENSOR............................577
Description ...............................................................577
CONSULT-II Reference Value in Data Monitor
Mode ........................................................................577
ECM Terminals and Reference Value .....................577
On Board Diagnosis Logic.......................................578
DTC Confirmation Procedure ..................................578
Wiring Diagram ........................................................579
Diagnostic Procedure ..............................................580
DTC P0335 CRANK POS SEN (TDC)........................587
Description ...............................................................587
CONSULT-II Reference Value in Data Monitor
Mode ........................................................................587
ECM Terminals and Reference Value .....................587
On Board Diagnosis Logic.......................................587
DTC Confirmation Procedure ..................................588
Wiring Diagram ........................................................589
Diagnostic Procedure ..............................................590
DTC P0500 VEHICLE SPEED SEN............................593
Description ...............................................................593
ECM Terminals and Reference Value .....................593
On Board Diagnosis Logic.......................................593
Overall Function Check ...........................................593
Wiring Diagram ........................................................595
Diagnostic Procedure ..............................................596
DTC P0571 BRAKE SW..............................................597
Description ...............................................................597
ECM Terminals and Reference Value .....................597
On Board Diagnosis Logic.......................................597
DTC Confirmation Procedure ..................................597
Wiring Diagram ........................................................599
Diagnostic Procedure ..............................................600
DTC P1107 ECM 10....................................................604
Description ...............................................................604
On Board Diagnosis Logic.......................................604
CONTENTS(Cont'd)
EC-7

Items
(CONSULT-II screen terms)DTC*6
Reference page
CONSULT-II
GST*2ECM*1*7
HO2S1 (B1) P0132 0132 EC-189
HO2S1 (B1) P0133 0133 EC-195
HO2S1 (B1) P0134 0134 EC-203
HO2S2 (B1) P0137 0137 EC-214
HO2S2 (B1) P0138 0138 EC-222
HO2S2 (B1) P0139 0139 EC-229
HO2S2 (B1) P0140 0140 EC-237
HO2S2 HTR (B1) P0141 0141 EC-243
IACV/AAC VLV/CIRC P0505 0505 EC-313
INT/V TIM V/CIR-B1 P1111 1111EC-329
KNOCK SEN/CIRC-B1 P0325 0325 EC-268
L/PRESS SOL/CIRC P0745 0745 AT-237
MAF SEN/CIRCUIT*3 P0100 0100 EC-152
MULTI CYL MISFIRE P0300 0300 EC-262
NATS MALFUNCTION P1610 - P1615 1610 - 1615 EL-239
NO DTC IS DETECTED.
FURTHER TESTING MAYBE REQUIREDÐ 0000 Ð
NO DTC IS DETECTED.
FURTHER TESTING MAYBE REQUIREDÐ Flashing*5 EC-73
O/R CLTCH SOL/CIRC P1760 1760 AT-265
PNP SW/CIRC P0705 0705 AT-181
P-N POS SW/CIRCUIT P1706 1706 EC-364
PURG VOLUME CONT/V P0443 0443 EC-304
SFT SOL A/CIRC P0750 0750 AT-244
SFT SOL B/CIRC P0755 0755 AT-250
TCC SOLENOID/CIRC P0740 0740 AT-231
THRTL POS SEN/CIRC*3 P0120 0120 EC-168
TP SEN/CIRC A/T P1705 1705 AT-256
TW CATALYST SYS-B1 P0420 0420 EC-299
VEH SPD SEN/CIR AT P0720 0720 AT-193
VEH SPEED SEN/CIRC*4 P0500 0500 EC-309
*1: In Diagnostic Test Mode II (Self-diagnostic results). These numbers are controlled by NISSAN.
*2: These numbers are prescribed by ISO 15031-6.
*3: When the fail-safe operation occurs, the MI illuminates.
*4: The MI illuminates when the ªRevolution sensor signalº and the ªVehicle speed sensor signalº meet the fail-safe condition at the
same time.
*5: While engine is running.
*6: 1st trip DTC No. is the same as DTC No.
*7: If so equipped
TROUBLE DIAGNOSIS Ð INDEXQG
Alphabetical & P No. Index for DTC (Cont'd)
EC-11

P No. Index for DTCNJEC0001S0302
DTC*6
Items
(CONSULT-II screen terms)Reference page
CONSULT-II
GST*2ECM*1*7
Ð Ð Unable to access ECM EC-123
Ð Flashing*5NO DTC IS DETECTED.
FURTHER TESTING MAYBE REQUIRED.EC-73
Ð 0000NO DTC IS DETECTED.
FURTHER TESTING MAYBE REQUIRED.Ð
P0100 0100 MAF SEN/CIRCUIT*3 EC-152
P0110 0110 AIR TEMP SEN/CIRC EC-158
P0115 0115 COOLANT T SEN/CIRC*3 EC-163
P0120 0120 THRTL POS SEN/CIRC*3 EC-168
P0130 0130 HO2S1 (B1) EC-176
P0131 0131 HO2S1 (B1) EC-183
P0132 0132 HO2S1 (B1) EC-189
P0133 0133 HO2S1 (B1) EC-195
P0134 0134 HO2S1 (B1) EC-203
P0135 0135 HO2S1 HTR (B1) EC-209
P0137 0137 HO2S2 (B1) EC-214
P0138 0138 HO2S2 (B1) EC-222
P0139 0139 HO2S2 (B1) EC-229
P0140 0140 HO2S2 (B1) EC-237
P0141 0141 HO2S2 HTR (B1) EC-243
P0171 0171 FUEL SYS-LEAN/BK1 EC-248
P0172 0172 FUEL SYS-RICH/BK1 EC-255
P0300 0300 MULTI CYL MISFIRE EC-262
P0301 0301 CYL 1 MISFIRE EC-262
P0302 0302 CYL 2 MISFIRE EC-262
P0303 0303 CYL 3 MISFIRE EC-262
P0304 0304 CYL 4 MISFIRE EC-262
P0325 0325 KNOCK SEN/CIRC-B1 EC-268
P0335 0335 CKP SEN/CIRCUIT EC-272
P0340 0340 CMP SEN/CIRCUIT EC-278
P0400 0400 EGR SYSTEM*7 EC-285
P0403 0403 EGR VOL CON/V CIR*7 EC-293
P0420 0420 TW CATALYST SYS-B1 EC-299
P0443 0443 PURG VOLUME CONT/V EC-304
P0500 0500 VEH SPEED SEN/CIRC*4 EC-309
P0505 0505 IACV/AAC VLV/CIRC EC-313
TROUBLE DIAGNOSIS Ð INDEXQG
Alphabetical & P No. Index for DTC (Cont'd)
EC-12

Items
(CONSULT-II screen terms)DTC*6
Reference page
CONSULT-II
GST*2ECM*1
COOLANT T SEN/CIRC*3 P0115 0115 EC-163
ENG OVER TEMP P1217 1217 EC-334
HO2S1 (B1) P0130 0130 EC-176
KNOCK SEN/CIRC-B1 P0325 0325 EC-268
MAF SEN/CIRCUIT*3 P0100 0100 EC-152
NATS MALFUNCTION P1610 - P1615 1610 - 1615 EL-239
NO DTC IS DETECTED.
FURTHER TESTING MAYBE REQUIREDÐ 0000 Ð
NO DTC IS DETECTED.
FURTHER TESTING MAYBE REQUIREDÐ Flashing*5 EC-73
THRTL POS SEN/CIRC*3 P0120 0120 EC-168
VEH SPEED SEN/CIRC*4 P0500 0500 EC-309
*1: In Diagnostic Test Mode II (Self-diagnostic results) (If so equipped). These numbers are controlled by NISSAN.
*2: These numbers are prescribed by ISO 15031-6.
*3: When the fail-safe operation occurs, the MI illuminates.
*4: The MI illuminates when the ªRevolution sensor signalº and the ªVehicle speed sensor signalº meet the fail-safe condition at the
same time.
*5: While engine is running.
*6: 1st trip DTC No. is the same as DTC No.
P No. Index for DTCNJEC0001S0402
DTC*6
Items
(CONSULT-II screen terms)Reference page
CONSULT-II
GST*2ECM*1
Ð Ð Unable to access ECM EC-123
Ð Flashing*5NO DTC IS DETECTED.
FURTHER TESTING MAYBE REQUIRED.EC-73
Ð 0000NO DTC IS DETECTED.
FURTHER TESTING MAYBE REQUIRED.Ð
P0100 0100 MAF SEN/CIRCUIT*3 EC-152
P0115 0115 COOLANT T SEN/CIRC*3 EC-163
P0120 0120 THRTL POS SEN/CIRC*3 EC-168
P0130 0130 HO2S1 (B1) EC-176
P0325 0325 KNOCK SEN/CIRC-B1 EC-268
P0335 0335 CKP SEN/CIRCUIT EC-272
P0340 0340 CMP SEN/CIRCUIT EC-278
P0500 0500 VEH SPEED SEN/CIRC*4 EC-309
P1217 1217 ENG OVER TEMP EC-334
P1610 - 1615 1610 - 1615 NATS MALFUNCTION EL-239
*1: In Diagnostic Test Mode II (Self-diagnostic results) (If so equipped). These numbers are controlled by NISSAN.
*2: These numbers are prescribed by ISO 15031-6
*3: When the fail-safe operation occurs, the MI illuminates.
TROUBLE DIAGNOSIS Ð INDEXQG
Alphabetical & P No. Index for DTC (Cont'd)
EC-14

SRT item Self-diagnostic test itemTest value (GST display)
Test limit Application
TID CID
HO2SHeated oxygen sensor 1
(front)09H 04H Max. X
0AH 84H Min. X
0BH 04H Max. X
0CH 04H Max. X
0DH 04H Max. X
Heated oxygen sensor 2
(rear)19H 86H Min. X
1AH 86H Min. X
1BH 06H Max. X
1CH 06H Max. X
HO2S HTRHeated oxygen sensor 1
heater (front)29H 08H Max. X
2AH 88H Min. X
Heated oxygen sensor 2
heater (rear)2DH 0AH Max. X
2EH 8AH Min. X
EGR SYSTEM
(where fitted)EGR function31H 8CH Min. X
32H 8CH Min. X
33H 8CH Min. X
34H 8CH Min. X
35H 0CH Max. X
Emission-related Diagnostic Information ItemsNJEC0031S0105X: Applicable Ð: Not applicable
Items
(CONSULT-II screen terms)DTC*1 SRT codeTest value/Test
limit
(GST only)1st trip DTC*1 Reference page
NO SELF DIAGNOSTIC FAIL-
URE INDICATEDP0000ÐÐÐÐ
MAF SEN/CIRCUIT P0100 Ð Ð X EC-152
AIR TEMP SEN/CIRC P0110 Ð Ð X EC-158
COOLANT T SEN/CIRC P0115 Ð Ð X EC-163
THRTL POS SEN/CIRC P0120 Ð Ð X EC-168
HO2S1 (B1) P0130 X X X*2 EC-176
HO2S1 (B1) P0131 X X X*2 EC-183
HO2S1 (B1) P0132 X X X*2 EC-189
HO2S1 (B1) P0133 X X X*2 EC-195
HO2S1 (B1) P0134 X X X*2 EC-203
HO2S1 HTR (B1) P0135 X X X*2 EC-209
HO2S2 (B1) P0137 X X X*2 EC-214
HO2S2 (B1) P0138 X X X*2 EC-222
HO2S2 (B1) P0139 X X X*2 EC-229
ON BOARD DIAGNOSTIC SYSTEM DESCRIPTIONQG
Emission-related Diagnostic Information (Cont'd)
EC-66

DTC Inspection Priority ChartNJEC0039If some DTCs are displayed at the same time, perform inspections one by one based on the following prior-
ity chart.
Priority Detected items (DTC)
1+P0100 Mass air flow sensor
+P0110 Intake air temperature sensor
+P0115 Engine coolant temperature sensor
+P0120 Throttle position sensor
+P0325 Knock sensor
+P0340 Camshaft position sensor (PHASE) circuit
+P0403 EGR volume control valve*1
+P0500 Vehicle speed sensor
+P0605 ECM
+P0335 Crankshaft position sensor (POS)
+P1605 A/T diagnostic communication line
+P1706 Park/Neutral position switch
2+P0130 - P0134 Heated oxygen sensor 1 (front)
+P0135 Heated oxygen sensor 1 heater (front)
+P0137 - P0140 Heated oxygen sensor 2 (rear)
+P0141 Heated oxygen sensor 2 heater (rear)
+P0443 EVAP canister purge volume control solenoid valve
+P0510 Closed throttle position switch*1
+P0705 - P0725, P0740 - P1760 A/T related sensors, solenoid valves and switches
+P1217 Overheat (Cooling system)
+P1401 EGR temperature sensor*1
3+P0171, P0172 Fuel injection system function
+P0300 - P0304 Misfire
+P0400, P1402 EGR function*1
+P0420 Three way catalyst function
+P0505 IACV-AAC valve
+P0731 - P0734, P0744 A/T function
+P 1111Intake valve timing control
*1: If so equipped
TROUBLE DIAGNOSIS Ð GENERAL DESCRIPTIONQG
DTC Inspection Priority Chart
EC-122

Fail-safe Chart=NJEC0040The ECM enters fail-safe mode if any of the following malfunctions is detected due to the open or short cir-
cuit. When the ECM enters the fail-safe mode, the MI illuminates.
DTC No.
Detected items Engine operating condition in fail-safe mode CON-
SULT-II
GSTECM*1
P0100 0100 Mass air flow sensor
circuitEngine speed will not rise more than 2,400 rpm due to the fuel cut.
P0115 0115 Engine coolant tempera-
ture sensor circuitEngine coolant temperature will be determined by ECM based on the time
after turning ignition switch ªONº or ªSTARTº.
CONSULT-II displays the engine coolant temperature decided by ECM.
The radiator fan operates.
ConditionEngine coolant temperature decided
(CONSULT-II display)
Just as ignition switch is turned
ON or Start40ÉC (104ÉF)
More than approx. 4 minutes
after ignition ON or Start80ÉC (176ÉF)
Except as shown above40 - 80ÉC (104 - 176ÉF)
(Depends on the time)
P0120 0120 Throttle position sensor
circuitThrottle position will be determined based on the injected fuel amount and
the engine speed. Therefore, acceleration will be poor.
Condition Driving condition
When engine is idling Normal
When accelerating Poor acceleration
Unable to
access
ECMUnable to
access
Diagnostic
Test Mode
IIECMECM fail-safe activating condition
The computing function of the ECM was judged to be malfunctioning.
When the fail-safe system activates (i.e., if the ECM detects a malfunction
condition in the CPU of ECM), the MI on the instrument panel lights to warn
the driver.
However it is not possible to access ECM and DTC cannot be confirmed.
Engine control with fail-safe
When ECM fail-safe is operating, fuel injection, ignition timing, fuel pump
operation and IACV-AAC valve operation are controlled under certain limita-
tions.
ECM fail-safe operation
Engine speedEngine speed will not rise more than
3,000 rpm
Fuel injectionSimultaneous multiport fuel injection sys-
tem
Ignition timing Ignition timing is fixed at the preset value
Fuel pumpFuel pump relay is ªONº when engine is
running and ªOFFº when engine stalls
IACV-AAC valve Full open
Cooling fansCooling fan relay ªONº (High speed condi-
tion) when engine is running, and ªOFFº
when engine stalls.
Replace ECM, if ECM fail-safe condition is confirmed.
*: In Diagnostic Test Mode II (Self-diagnostic results) (If so equipped)
TROUBLE DIAGNOSIS Ð GENERAL DESCRIPTIONQG
Fail-safe Chart
EC-123