2003 NISSAN ALMERA N16 p0102

EC-2
DTC P0031, P0032 HO2S1 HEATER .....................122
Description ............................................................122
CONSULT-II Reference Value in Data Monitor Mode
.122
On Board Diagnosis Logic ....................................122
DTC Confirmation Procedure ...............................122
Wiring Diagram .....................................................124
Diagnostic Procedure ...........................................125
Component Inspection ..........................................127
Removal and Installation ......................................127
DTC P0037, P0038 HO2S2 HEATER .....................128
Description ............................................................128
CONSULT-II Reference Value in Data Monitor Mode
.128
On Board Diagnosis Logic ....................................128
DTC Confirmation Procedure ...............................128
Wiring Diagram .....................................................130
Diagnostic Procedure ...........................................131
Component Inspection ..........................................133
Removal and Installation ......................................133
DTC P0102, P0103 MAF SENSOR .........................134
Component Description ........................................134
CONSULT-II Reference Value in Data Monitor Mode
.134
On Board Diagnosis Logic ....................................134
DTC Confirmation Procedure ...............................135
Wiring Diagram .....................................................136
Diagnostic Procedure ...........................................137
Component Inspection ..........................................139
Removal and Installation ......................................139
DTC P0112, P0113 IAT SENSOR ...........................140
Component Description ........................................140
On Board Diagnosis Logic ....................................140
DTC Confirmation Procedure ...............................140
Wiring Diagram .....................................................141
Diagnostic Procedure ...........................................142
Component Inspection ..........................................143
Removal and Installation ......................................143
DTC P0117, P0118 ECT SENSOR ..........................144
Component Description ........................................144
On Board Diagnosis Logic ....................................144
DTC Confirmation Procedure ...............................145
Wiring Diagram .....................................................146
Diagnostic Procedure ...........................................147
Component Inspection ..........................................148
Removal and Installation ......................................148
DTC P0132 HO2S1 .................................................149
Component Description ........................................149
CONSULT-II Reference Value in Data Monitor Mode
.149
On Board Diagnosis Logic ...................................
.149
DTC Confirmation Procedure ...............................150
Wiring Diagram .....................................................151
Diagnostic Procedure ...........................................152
Component Inspection ..........................................153
Removal and Installation ......................................154
DTC P0133 HO2S1 .................................................155
Component Description ........................................155
CONSULT-II Reference Value in Data Monitor Mode .155
On Board Diagnosis Logic ....................................155
DTC Confirmation Procedure ................................156
Overall Function Check .........................................157
Wiring Diagram .....................................................158
Diagnostic Procedure ............................................159
Component Inspection ..........................................162
Removal and Installation .......................................164
DTC P0134 HO2S1 ................................................ .165
Component Description ........................................165
CONSULT-II Reference Value in Data Monitor Mode
.165
On Board Diagnosis Logic ....................................165
DTC Confirmation Procedure ................................166
Overall Function Check .........................................166
Wiring Diagram .....................................................168
Diagnostic Procedure ............................................169
Component Inspection ..........................................170
Removal and Installation .......................................171
DTC P0138 HO2S2 ................................................ .172
Component Description ........................................172
CONSULT-II Reference Value in Data Monitor Mode
.172
On Board Diagnosis Logic ....................................172
DTC Confirmation Procedure ................................173
Wiring Diagram .....................................................174
Diagnostic Procedure ............................................175
Component Inspection ..........................................176
Removal and Installation .......................................177
DTC P0139 HO2S2 ................................................ .178
Component Description ........................................178
CONSULT-II Reference Value in Data Monitor Mode
.178
On Board Diagnosis Logic ....................................178
DTC Confirmation Procedure ................................179
Overall Function Check .........................................180
Wiring Diagram .....................................................181
Diagnostic Procedure ............................................182
Component Inspection ..........................................184
Removal and Installation ......................................
.185
DTC P0171 FUEL INJECTION SYSTEM FUNCTION .186
On Board Diagnosis Logic ....................................186
DTC Confirmation Procedure ................................186
Wiring Diagram .....................................................188
Diagnostic Procedure ............................................189
DTC P0172 FUEL INJECTION SYSTEM FUNCTION .193
On Board Diagnosis Logic ....................................193
DTC Confirmation Procedure ................................193
Wiring Diagram .....................................................195
Diagnostic Procedure ............................................196
DTC P0221 TP SENSOR ........................................199
Component Description ........................................199
CONSULT-II Reference Value in Data Monitor Mode
.199
On Board Diagnosis Logic ....................................199
DTC Confirmation Procedure ................................199
Wiring Diagram .....................................................201
Diagnostic Procedure ............................................202

EC-6
Basic Inspection ...................................................443
Symptom Matrix Chart ..........................................448
Engine Control Component Parts Location ..........452
Circuit Diagram .....................................................456
ECM Harness Connector Terminal Layout ...........458
ECM Terminals and Reference Value ...................458
CONSULT-II Function ...........................................465
CONSULT-II Reference Value in Data Monitor Mode
.475
Major Sensor Reference Graph in Data Monitor
Mode .....................................................................479
TROUBLE DIAGNOSIS - SPECIFICATION VALUE .481
Description ............................................................481
Testing Condition ..................................................481
Inspection Procedure ............................................481
Diagnostic Procedure ...........................................482
TROUBLE DIAGNOSIS FOR INTERMITTENT INCI-
DENT .......................................................................485
Description ............................................................485
Diagnostic Procedure ...........................................485
POWER SUPPLY CIRCUIT FOR ECM ...................486
Wiring Diagram .....................................................486
Diagnostic Procedure ...........................................487
Component Inspection ..........................................491
DTC U1000, U1001 CAN COMMUNICATION LINE .492
Description ............................................................492
On Board Diagnosis Logic ....................................492
DTC Confirmation Procedure ...............................492
Wiring Diagram .....................................................493
Diagnostic Procedure ...........................................494
DTC P0102, P0103 MAF SENSOR .........................495
Component Description ........................................495
CONSULT-II Reference Value in Data Monitor Mode
.495
On Board Diagnosis Logic ....................................495
DTC Confirmation Procedure ...............................496
Wiring Diagram .....................................................497
Diagnostic Procedure ...........................................498
Component Inspection ..........................................500
Removal and Installation ......................................500
DTC P0117, P0118 ECT SENSOR ..........................501
Component Description ........................................501
On Board Diagnosis Logic ....................................501
DTC Confirmation Procedure ...............................502
Wiring Diagram .....................................................503
Diagnostic Procedure ...........................................504
Component Inspection ..........................................505
Removal and Installation ......................................505
DTC P0132 HO2S1 .................................................506
Component Description ........................................506
CONSULT-II Reference Value in Data Monitor Mode
.506
On Board Diagnosis Logic ....................................506
DTC Confirmation Procedure ...............................507
Wiring Diagram .....................................................508
Diagnostic Procedure ...........................................509
Component Inspection ..........................................510
Removal and Installation ......................................511DTC P0134 HO2S1 ................................................ .512
Component Description ........................................512
CONSULT-II Reference Value in Data Monitor Mode
.512
On Board Diagnosis Logic ....................................512
Overall Function Check .........................................513
Wiring Diagram .....................................................514
Diagnostic Procedure ............................................515
Component Inspection ..........................................516
Removal and Installation .......................................517
DTC P0138 HO2S2 ................................................ .518
Component Description ........................................518
CONSULT-II Reference Value in Data Monitor Mode
.518
On Board Diagnosis Logic ....................................518
DTC Confirmation Procedure ................................518
Wiring Diagram .....................................................520
Diagnostic Procedure ............................................521
Component Inspection ..........................................522
Removal and Installation .......................................523
DTC P0221 TP SENSOR ........................................524
Component Description ........................................524
CONSULT-II Reference Value in Data Monitor Mode
.524
On Board Diagnosis Logic ....................................524
DTC Confirmation Procedure ................................524
Wiring Diagram .....................................................526
Diagnostic Procedure ............................................527
Component Inspection ..........................................529
Removal and Installation .......................................529
DTC P0222, P0223 TP SENSOR ............................530
Component Description ........................................530
CONSULT-II Reference Value in Data Monitor Mode
.530
On Board Diagnosis Logic ....................................530
DTC Confirmation Procedure ................................530
Wiring Diagram .....................................................532
Diagnostic Procedure ............................................533
Component Inspection ..........................................535
Removal and Installation ......................................
.535
DTC P0226 APP SENSOR ......................................536
Component Description ........................................536
CONSULT-II Reference Value in Data Monitor Mode
.536
On Board Diagnosis Logic ....................................536
DTC Confirmation Procedure ................................536
Wiring Diagram .....................................................538
Diagnostic Procedure ............................................539
Component Inspection ..........................................541
Removal and Installation .......................................542
DTC P0227, P0228 APP SENSOR .........................543
Component Description ........................................543
CONSULT-II Reference Value in Data Monitor Mode
.543
On Board Diagnosis Logic ....................................543
DTC Confirmation Procedure ................................543
Wiring Diagram .....................................................545
Diagnostic Procedure ............................................546

INDEX FOR DTC
EC-11
[QG (WITH EURO-OBD)]
C
D
E
F
G
H
I
J
K
L
MA
ECHO2S1 (B1) P0133 0133 2×EC-155
HO2S1 (B1) P0134 0134 2×EC-165
HO2S1 (B1) P1143 1143 2×EC-296
HO2S1 (B1) P1144 1144 2×EC-302
HO2S1 HTR (B1) P0031 0031 2×EC-122
HO2S1 HTR (B1) P0032 0032 2×EC-122
HO2S2 (B1) P0138 0138 2×EC-172
HO2S2 (B1) P0139 0139 2×EC-178
HO2S2 (B1) P1146 1146 2×EC-308
HO2S2 (B1) P1147 1147 2×EC-316
HO2S2 HTR (B1) P0037 0037 2×EC-128
HO2S2 HTR (B1) P0038 0038 2×EC-128
IAT SEN/CIRCUIT P0112 0112 2×EC-140
IAT SEN/CIRCUIT P0113 0113 2×EC-140
INT/V TIM CONT-B1 P0011 0011 2 –EC-119
INT/V TIM V/CIR-B1 P1111 1111 2×EC-272
KNOCK SEN/CIRC-B1 P0327 0327 2 –EC-230
KNOCK SEN/CIRC-B1 P0328 0328 2 –EC-230
L/PRESS SOL/CIRC P0745 0745 2×AT- 1 6 4
MAF SEN/CIRCUIT P0102 0102 1×EC-134
MAF SEN/CIRCUIT P0103 0103 1×EC-134
MULTI CYL MISFIRE P0300 0300 2×EC-225
NATS MALFUNCTION P1610 - P1615 1610 - 1615 2 –EC-49
NO DTC IS DETECTED.
FURTHER TESTING
MAY BE REQUIRED.No DTC
Flashing*4–
Flashing*4EC-50
NO DTC IS DETECTED.
FURTHER TESTING
MAY BE REQUIRED.P0000 0000––—
O/R CLTCH SOL/CIRC P1760 1760 2×AT- 1 8 7
PNP SW/CIRC P0705 0705 2×AT- 111
P-N POS SW/CIRCUIT P1706 1706 2×EC-356
PURG VOLUME CONT/V P0444 0444 2×EC-251
PW ST P SEN/CIRC P0550 0550 2 –EC-260
SENSOR POWER/CIRC P1229 1229 1×EC-352
SFT SOL A/CIRC P0750 0750 1×AT- 1 7 1
SFT SOL B/CIRC P0755 0755 1×AT- 1 7 6
TCC SOLENOID/CIRC P0740 0740 2×AT- 1 5 9
TP SEN 1/CIRC P0222 0222 1×EC-205
TP SEN 1/CIRC P0223 0223 1×EC-205
TP SEN 2/CIRC P1223 1223 1×EC-335
TP SEN 2/CIRC P1224 1224 1×EC-335
TP SENSOR P0221 0221 1×EC-199
TPV SEN/CIRC A/T P1705 1705 1×AT- 1 8 1
Items
(CONSULT-II screen terms)DTC*
1
TripMI lighting
upReference page
CONSULT-II
GST*
2ECM*3

EC-12
[QG (WITH EURO-OBD)]
INDEX FOR DTC
*1: 1st trip DTC No. is the same as DTC No.
*2: These numbers are prescribed by ISO 15031-5.
*3: In Diagnostic Test Mode II (Self-diagnostic results), these numbers are controlled by NISSAN.
*4: When engine is running.
*5: The troubleshooting for this DTC needs CONSULT-II.
*6: When the fail-safe operations for both self-diagnoses occur, the MI illuminates.
DTC No. IndexEBS00K2U
Check if the vehicle is a model with Euro-OBD (E-OBD) system or not by the “Type approval number” on the
identification plate. Refer to GI-39.
NOTE:
If DTC U1000 or U1001 is displayed with other DTC, first perform the trouble diagnosis for DTC U1000,
U1001. Refer to EC-116, "
DTC U1000, U1001 CAN COMMUNICATION LINE" .
×: Applicable –: Not applicable TW CATALYST SYS-B1 P0420 0420 2×EC-246
VEH SPD SEN/CIR AT*6P0720 0720 2×AT-123
VEH SPEED SEN/CIRC P0500 0500 2×EC-257
Items
(CONSULT-II screen terms)DTC*
1
TripMI lighting
upReference page
CONSULT-II
GST*
2ECM*3
DTC*1
Items
(CONSULT-II screen terms)TripMI lighting
upReference page
CONSULT-II
GST*
2ECM*3
No DTC
Flashing*4NO DTC IS DETECTED.
FURTHER TESTING
MAY BE REQUIRED.–
Flashing*4EC-50
U1000
1000*5CAN COMM CIRCUIT 1×EC-116
U1001
1001*5CAN COMM CIRCUIT 2 –EC-116
P0000 0000NO DTC IS DETECTED.
FURTHER TESTING
MAY BE REQUIRED.––—
P0011 0011 INT/V TIM CONT-B1 2 –EC-119
P0031 0031 HO2S1 HTR (B1) 2×EC-122
P0032 0032 HO2S1 HTR (B1) 2×EC-122
P0037 0037 HO2S2 HTR (B1) 2×EC-128
P0038 0038 HO2S2 HTR (B1) 2×EC-128
P0102 0102 MAF SEN/CIRCUIT 1×EC-134
P0103 0103 MAF SEN/CIRCUIT 1×EC-134
P0112 0112 IAT SEN/CIRCUIT 2×EC-140
P0113 0113 IAT SEN/CIRCUIT 2×EC-140
P0117 0117 ECT SEN/CIRCUIT 1×EC-144
P0118 0118 ECT SEN/CIRCUIT 1×EC-144
P0132 0132 HO2S1 (B1) 2×EC-149
P0133 0133 HO2S1 (B1) 2×EC-155
P0134 0134 HO2S1 (B1) 2×EC-165
P0138 0138 HO2S2 (B1) 2×EC-172
P0139 0139 HO2S2 (B1) 2×EC-178
P0171 0171 FUEL SYS-LEAN-B1 2×EC-186
P0172 0172 FUEL SYS-RICH-B1 2×EC-193
P0221 0221 TP SENSOR 1×EC-199

ON BOARD DIAGNOSTIC (OBD) SYSTEM
EC-37
[QG (WITH EURO-OBD)]
C
D
E
F
G
H
I
J
K
L
MA
EC
The fail-safe function also operates when above diagnoses except MI circuit and demands the driver to repair
the malfunction.
Emission-related Diagnostic InformationEBS00K3H
EMISSION-RELATED DIAGNOSTIC INFORMATION ITEMS
Engine operating condition in fail-safe mode Engine speed will not rise more than 2,500 rpm due to the fuel cut
Items
(CONSULT-II screen terms)DTC*
1
SRT codeTest Value/
Test Limit
(GST only)1st trip DTC Reference page
CONSULT-II
GST*
2ECM
CAN COMM CIRCUIT U1000
1000*
3———EC-116
CAN COMM CIRCUIT U1001
1001*3——×EC-116
NO DTC IS DETECTED.
FURTHER TESTING
MAY BE REQUIRED.P0000 0000————
INT/V TIM CONT-B1 P0011 0011 — —×EC-119
HO2S1 HTR (B1) P0031 0031××
×*4EC-122
HO2S1 HTR (B1) P0032 0032××
×*4EC-122
HO2S2 HTR (B1) P0037 0037××
×*4EC-128
HO2S2 HTR (B1) P0038 0038××
×*4EC-128
MAF SEN/CIRCUIT P0102 0102 — — —EC-134
MAF SEN/CIRCUIT P0103 0103 — — —EC-134
IAT SEN/CIRCUIT P0112 0112 — —×EC-140
IAT SEN/CIRCUIT P0113 0113 — —×EC-140
ECT SEN/CIRCUIT P0117 0117 — — —EC-144
ECT SEN/CIRCUIT P0118 0118 — — —EC-144
HO2S1 (B1) P0132 0132××
×*4EC-149
HO2S1 (B1) P0133 0133××
×*4EC-155
HO2S1 (B1) P0134 0134××
×*4EC-165
HO2S2 (B1) P0138 0138××
×*4EC-172
HO2S2 (B1) P0139 0139××
×*4EC-178
FUEL SYS-LEAN-B1 P0171 0171 — —×EC-186
FUEL SYS-RICH-B1 P0172 0172 — —×EC-193
TP SENSOR P0221 0221 — — —EC-199
TP SEN 1/CIRC P0222 0222 — — —EC-205
TP SEN 1/CIRC P0223 0223 — — —EC-205
APP SENSOR P0226 0226 — — —EC-211
APP SEN 1/CIRC P0227 0227 — — —EC-218
APP SEN 1/CIRC P0228 0228 — — —EC-218
MULTI CYL MISFIRE P0300 0300 — —×EC-225
CYL 1 MISFIRE P0301 0301 — —×EC-225
CYL 2 MISFIRE P0302 0302 — —×EC-225
CYL 3 MISFIRE P0303 0303 — —×EC-225
CYL 4 MISFIRE P0304 0304 — —×EC-225
KNOCK SEN/CIRC-B1 P0327 0327 — —×EC-230
KNOCK SEN/CIRC-B1 P0328 0328 — —×EC-230
CKP SEN/CIRCUIT P0335 0335 — —×EC-234

TROUBLE DIAGNOSIS
EC-63
[QG (WITH EURO-OBD)]
C
D
E
F
G
H
I
J
K
L
MA
EC
Fail-safe ChartEBS00K3N
●When the DTC listed below is detected, the ECM enters fail-safe mode and the MI lights up.
Priority Detected items (DTC)
1
●U1000 U1001 CAN communication line
●P0102 P0103 Mass air flow sensor
●P0112 P0113 Intake air temperature sensor
●P0117 P0118 Engine coolant temperature sensor
●P0221 P0222 P0223 P1223 P1224 P1225 P1226 P1229 Throttle position sensor
●P0226 P0227 P0228 P1227 P1228 Accelerator pedal position sensor
●P0327 P0328 Knock sensor
●P0335 Crankshaft position sensor (POS)
●P0340 Camshaft position sensor (PHASE)
●P0500 Vehicle speed sensor
●P0705 Park/Neutral position (PNP) switch
●P0605 ECM
●P1610-P1615 NATS
●P1706 Park/Neutral position (PNP) switch
2
●P0031 P0032 Heated oxygen sensor 1 heater
●P0037 P0038 Heated oxygen sensor 2 heater
●P0132 P0133 P0134 P1143 P1144 Heated oxygen sensor 1
●P0138 P0139 P1146 P1147 Heated oxygen sensor 2
●P0550 Power steering pressure sensor
●P0710-P0725 P0740-P0755 P1705 P1760 A/T related sensors and solenoid valves
●P1065 ECM power supply
●P 1111 I n ta k e v a l v e t i m i n g c o n t r o l s o l e n o i d v a l v e
●P1122 Electric throttle control function
●P1124 P1126 P1128 Electric throttle control actuator
●P1805 Brake switch
3
●P0011 Intake valve timing control
●P0171 P0172 Fuel injection system function
●P0300 - P0304 Misfire
●P0420 Three way catalyst function
●P0444 EVAP canister purge volume control solenoid valve
●P0731-P0734 A/T function
●P1121 Electric throttle control actuator
●P1217 Engine over temperature (OVERHEAT)
DTC No. Detected items Engine operating condition in fail-safe mode
P0102
P0103Mass air flow sensor circuit Engine speed will not rise more than 2,400 rpm due to the fuel cut.

EC-134
[QG (WITH EURO-OBD)]
DTC P0102, P0103 MAF SENSOR
DTC P0102, P0103 MAF SENSOR
PFP:22680
Component DescriptionEBS00K4X
The mass air flow sensor is placed in the stream of intake air. It mea-
sures the intake flow rate by measuring a part of the entire intake
flow. It consists of a hot film that is supplied with electric current from
the ECM. The temperature of the hot film is controlled by the ECM a
certain amount. The heat generated by the hot film is reduced as the
intake air flows around it. The more air, the greater the heat loss.
Therefore, the ECM must supply more electric current to maintain
the temperature of the hot film as air flow increases. The ECM
detects the air flow by means of this current change.
CONSULT-II Reference Value in Data Monitor ModeEBS00K4Y
Specification data are reference values.
On Board Diagnosis LogicEBS00K4Z
These self-diagnoses have the one trip detection logic.
FAIL-SAFE MODE
When the malfunction is detected, the ECM enters fail-safe mode and the MI lights up.
SEC266C
MONITOR ITEM CONDITION SPECIFICATION
MAS A/F SE-B1
●Engine: After warming up
●Air conditioner switch: OFF
●Shift lever:
N (A/T models)
Neutral (M/T models)
●No-loadIdle Approx. 1.0 - 1.7V
2,500 rpm Approx. 1.5 - 2.1V
CAL/LD VALUE
●Engine: After warming up
●Shift lever:
N (A/T models)
Neutral (M/T models)
●Air conditioner switch: OFF
●No-loadIdle 10% - 35%
2,500 rpm 10% - 35%
MASS AIRFLOW
●Engine: After warming up
●Shift lever:
N (A/T models)
Neutral (M/T models)
●Air conditioner switch: OFF
●No-loadIdle 1.0 - 4.0 g·m/s
2,500 rpm 5.0 - 10.0 g·m/s
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P0102
0102Mass air flow sensor circuit
low inputAn excessively low voltage from the sensor
is sent to ECM when engine is running.
●Harness or connectors
(The sensor circuit is open or shorted.)
●Intake air leaks
●Mass air flow sensor
P0103
0103Mass air flow sensor circuit
high inputAn excessively high voltage from the sensor
is sent to ECM.
●Harness or connectors
(The sensor circuit is open or shorted.)
●Mass air flow sensor
Detected items Engine operating condition in fail-safe mode
Mass air flow sensor circuit Engine speed will not rise more than 2,400 rpm due to the fuel cut.

DTC P0102, P0103 MAF SENSOR
EC-135
[QG (WITH EURO-OBD)]
C
D
E
F
G
H
I
J
K
L
MA
EC
DTC Confirmation ProcedureEBS00K50
NOTE:
If “DTC Confirmation Procedure” has been previously conducted, always turn ignition switch “OFF” and wait at
least 10 seconds before conducting the next test.
PROCEDURE FOR DTC P0102
With CONSULT-II
1. Turn ignition switch “ON”.
2. Select “DATA MONITOR” mode with CONSULT-II.
3. Start engine and wait at least 5 seconds.
4. If DTC is detected, go to EC-137, "
Diagnostic Procedure" .
With GST
Follow the procedure “With CONSULT-II” above.
PROCEDURE FOR DTC P0103
With CONSULT-II
1. Turn ignition switch “ON”.
2. Select “DATA MONITOR” mode with CONSULT-II.
3. Wait at least 5 seconds.
4. If DTC is detected, go to EC-137, "
Diagnostic Procedure" .
If DTC is not detected, go to next step.
5. Start engine and wait at least 5 seconds.
6. If DTC is detected, go to EC-137, "
Diagnostic Procedure" .
With GST
Follow the procedure “With CONSULT-II” above.
SEF058Y
SEF058Y