2003 NISSAN X-TRAIL check engine

ELECTRICAL LOAD SIGNAL
EC-367
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5.CHECK LOAD SIGNAL CIRCUIT OVERALL FUNCTION-I
Wi th ou t C O N S U LT-I I
1. Turn ignition switch “ON”.
2. Check voltage between ECM terminal 52 and ground under the
following conditions.
OK or NG
OK >> GO TO 6.
NG >> GO TO 8.
6.CHECK LOAD SIGNAL CIRCUIT OVERALL FUNCTION-II
Wi th ou t C O N S U LT-I I
1. Turn ignition switch “ON”.
2. Check voltage between ECM terminal 53 and ground under the
following conditions.
OK or NG
OK >> GO TO 7.
NG >> GO TO 12.
7.CHECK HEATER FAN CONTROL CIRCUIT OVERALL FUNCTION
Wi th ou t C O N S U LT-I I
1. Turn ignition switch “ON”.
2. Check voltage between ECM terminal 55 and ground under the
following conditions.
OK or NG
OK >>INSPECTION END
NG >> GO TO 16.
8.CHECK REAR WINDOW DEFOGGER FUNCTION
1. Start engine.
2. Turn “ON” the rear window defogger switch.
3. Check the rear windshield. Is the rear windshield heated up?
Ye s o r N o
Yes >>GOTO9.
No >> Refer toGW-9, "
REAR WINDOW DEFOGGER".
Condition Voltage
Rear window defogger switch "ON" BATTERY VOLTAGE
Rear window defogger switch "OFF" 0V
PBIB0660E
Condition Voltage
Lighting switch "ON" at 2nd position BATTERY VOLTAGE
Lighting switch "OFF" 0V
PBIB0070E
Condition Voltage
Heater fan control switch "ON" 0V
heater fan control switch "OFF" Approximately 5V
PBIB0661E

EC-368
[QR (WITH EURO-OBD)]
ELECTRICAL LOAD SIGNAL
9.CHECK REAR WINDOW DEFOGGER INPUT SIGNAL CIRCUIT FOR OPEN OR SHORT
1. Stop engine.
2. Disconnect ECM harness connector.
3. Disconnect rear window defogger relay.
4. Check harness continuity between ECM terminal 52 and harness connector M17 terminal 1 (RHD mod-
els), 5 (LHD models).
5. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 11.
NG >> GO TO 10.
10.DETECT MALFUNCTIONING PART
Check the following.
lHarness connectors M62, F42
lHarness for open and short between ECM and harness connector M17
>> Repair open circuit or short to ground or short to power in harness or connectors.
11 .CHECK INTERMITTENT INCIDENT
PerformEC-107, "
TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT".
>>INSPECTION END
12.CHECK HEADLAMP FUNCTION
1. Start engine.
2. Turn the lighting switch “ON” at 2nd position.
3. Check that headlamps are illuminated.
OK or NG
OK >> GO TO 13.
NG >> Refer toLT- 4 , "
HEADLAMP"orLT- 9 , "HEADLAMP - DAYTIME LIGHT SYSTEM -". Continuity should exist.

ELECTRICAL LOAD SIGNAL
EC-369
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13.CHECK HEADLAMP INPUT SIGNAL CIRCUIT FOR OPEN OR SHORT
1. Stop engine.
2. Disconnect ECM harness connector.
3. Disconnect lighting switch harness connectors.
4. Check harness continuity between ECM terminal 53 and lighting switch terminal 9, 10 under the following
conditions.
5. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 15.
NG >> GO TO 14.
14.DETECT MALFUNCTIONING PART
Check the following.
lHarness connectors E60, F36
lDiode E123, E124
lHarness for open and short between ECM and lighting switch
>> Repair open circuit or short to ground or short to power in harness or connectors.
15.CHECK INTERMITTENT INCIDENT
PerformEC-107, "
TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT".
>>INSPECTION END
16.CHECK HEATER FAN CONTROL FUNCTION
1. Start engine.
2. Turn “ON” the fan control switch.
3. Check the blower fan motor. Does the blower fan motor activate?
Ye s o r N o
Yes >>GOTO17.
No >> Refer toAT C - 3 0 , "
TROUBLE DIAGNOSIS".
Condition Continuity
1 Should exist
2 Should not exist
PBIB0662E

EC-370
[QR (WITH EURO-OBD)]
ELECTRICAL LOAD SIGNAL
17.CHECK HEATER FAN SIGNAL CIRCUIT FOR OPEN OR SHORT
1. Stop engine.
2. Disconnect ECM harness connector.
3. Disconnect A/C AUTO AMP. harness connector.
4. Check harness continuity between ECM terminal 55 and A/C AUTO AMP. terminal 19.
Refer to Wiring Diagram.
5. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 19.
NG >> GO TO 18.
18.DETECT MALFUNCTIONING PART
Check the following.
lHarness connectors M62, F42
lHarness for open and short between ECM and A/C AUTO AMP.
>> Repair open circuit or short to ground or short to power in harness or connectors.
19.CHECK INTERMITTENT INCIDENT
PerformEC-107, "
TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT".
>>INSPECTION END Continuity should exist.

INDEX FOR DTC
EC-379
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[QR (WITHOUT EURO-OBD)]INDEX FOR DTCPFP:00024
Alphabetical IndexEBS00BEJ
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 toGI-45, "
IDENTIFICATION PLATE".
NOTE:
If DTC U1000 is displayed with other DTC, first perform the trouble diagnosis for DTC U1000. Refer to
EC-460
.
*1: 1st trip DTC No. is the same as DTC No.
*2: In Diagnostic Test Mode II (Self-diagnostic results).
*3: When engine is running.
*4: When the fail-safe operation occurs, the MI illuminates.
*5: The trouble shooting for this DTC needs CONSULT-II.
*6: Except for M/T models without ESP/TCS/ABS system.
*7: For M/T models with ESP/TCS/ABS system.Items
(CONSULT-II screen terms)DTC*1
Reference page
CONSULT-II ECM*2
APP SEN/CIRCUIT P0121 0121EC-484
BRAKE SW/CIRCUIT P1805 1805EC-562
CAN COMM CIRCUIT*6 U1000 1000*5EC-460
CKP SEN/CIRCUIT P0335 0335EC-501
CMP SEN/CIRCUIT P0340 0340EC-507
ECM P0605 0605EC-523
ECM BACK UP/CIRC P1065 1065EC-530
ECT SEN/CIRCUIT*4 P0117 0117EC-470
ECT SEN/CIRCUIT*4 P0118 0118EC-470
ENG OVER TEMP P1217 1217EC-548
E T C A C T R P 11 2 1 11 2 1EC-534
ETC FUNCTION/CIRC P1122 1122EC-536
ETC MOT RLY/CIRC P1123 1123EC-542
HO2S1 (B1) P0134 0134EC-490
KNOCK SEN/CIRC-B1 P0327 0327EC-496
KNOCK SEN/CIRC-B1 P0328 0328EC-496
MAF SEN/CIRCUIT*4 P0102 0102EC-463
MAF SEN/CIRCUIT*4 P0103 0103EC-463
MIL/CIRC P0650 0650EC-526
NATS MALFUNCTION P1610 - P1615 1610 - 1615EC-403
NO DTC IS DETECTED.
FURTHER TESTING
MAY BE REQUIRED.No DTC Flashing*3EC-404
NO DTC IS DETECTED.
FURTHER TESTING
MAY BE REQUIRED.P0000 0000 —
PW ST P SEN/CIRC P0550 0550EC-518
TCS/CIRC*7 P1212 1212EC-547
THRTL POS SEN/CIRC*4 P0120 0120EC-475
VEH SPEED SEN/CIRC P0500 0500EC-513

EC-380
[QR (WITHOUT EURO-OBD)]
INDEX FOR DTC
DTC No. Index
EBS00BEK
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 toGI-45, "
IDENTIFICATION PLATE".
NOTE:
If DTC U1000 is displayed with other DTC, first perform the trouble diagnosis for DTC U1000. Refer to
EC-460
.
*1: 1st trip DTC No. is the same as DTC No.
*2: In Diagnostic Test Mode II (Self-diagnostic results).
*3: When engine is running.
*4: When the fail-safe operation occurs, the MI illuminates.
*5: The trouble shooting for this DTC needs CONSULT-II.
*6: Except for M/T models without ESP/TCS/ABS system.
*7: For M/T models with ESP/TCS/ABS system.DTC*1
Items
(CONSULT-II screen terms)Reference page
CONSULT-II ECM*2
No DTC Flashing*3NO DTC IS DETECTED.
FURTHER TESTING
MAYBEREQUIRED.EC-404
U1000 1000*5 CAN COMM CIRCUIT*6EC-460
P0000 0000NO DTC IS DETECTED.
FURTHER TESTING
MAYBEREQUIRED.—
P0102 0102 MAF SEN/CIRCUIT*4EC-463
P0103 0103 MAF SEN/CIRCUIT*4EC-463
P0117 0117 ECT SEN/CIRCUIT*4EC-470
P0118 0118 ECT SEN/CIRCUIT*4EC-470
P0120 0120 THRTL POS SEN/CIRC*4EC-475
P0121 0121 APP SEN/CIRCUITEC-484
P0134 0134 HO2S1 (B1)EC-490
P0327 0327 KNOCK SEN/CIRC-B1EC-496
P0328 0328 KNOCK SEN/CIRC-B1EC-496
P0335 0335 CKP SEN/CIRCUITEC-501
P0340 0340 CMP SEN/CIRCUITEC-507
P0500 0500 VEH SPEED SEN/CIRCEC-513
P0550 0550 PW ST P SEN/CIRCEC-518
P0605 0605 ECMEC-523
P0650 0650 MIL/CIRCEC-526
P1065 1065 ECM BACK UP/CIRCEC-530
P1121 1121 ETC ACTREC-534
P1122 1122 ETC FUNCTION/CIRCEC-536
P1123 1123 ETC MOT RLY/CIRCEC-542
P1212 1212 TCS/CIRC*7EC-547
P1217 1217 ENG OVER TEMPEC-548
P1610 - P1615 1610 - 1615 NATS MALFUNCTIONEC-403
P1805 1805 BRAKE SW/CIRCUITEC-562

PREPARATION
EC-385
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PREPARATIONPFP:00002
Special Service ToolsEBS00BEP
The actual shapes of Kent-Moore tools may differ from those of special service tools illustrated here.
Commercial Service ToolsEBS00BEQ
Tool number
To o l n a m eDescription
KV10117100
Heated oxygen
sensor wrenchLoosening or tightening heated oxygen sensors
with 22 mm (0.87 in) hexagon nut
KV10114400
Heated oxygen
sensor wrenchLoosening or tightening heated oxygen sensors
a: 22 mm (0.87 in)
S-NT379
S-NT636
Tool name (Kent-
Moore No.)Description
Quick connector
releaseRemoving fuel tube quick connectors in engine
room
(Available in SEC. 164 of PARTS CATALOG:
Part No. 16441 6N210)
Fuel filler cap adapter Checking fuel tank vacuum relief valve opening
pressure
Socket wrench Removing and installing engine coolant
temperature sensor
PBIC0198E
S-NT653
S-NT705

EC-396
[QR (WITHOUT EURO-OBD)]
BASIC SERVICE PROCEDURE
–Check ignition timing.
Throttle Valve Closed Position LearningEBS00BF0
DESCRIPTION
“Throttle Valve Closed Position Learning” is an operation to learn the fully closed position of the throttle valve
by monitoring the throttle position sensor output signal. It must be performed each time harness connector of
electric throttle control actuator or ECM is disconnected.
OPERATION PROCEDURE
1. Make sure that accelerator pedal is fully released.
2. Turn ignition switch “ON”.
3. Turn ignition switch “OFF” wait at least 10 seconds.
Make sure that throttle valve moves during above 10 seconds by confirming the operating sound.
Accelerator Pedal Released Position LearningEBS00BLT
DESCRIPTION
“Accelerator Pedal Released Position Learning” is an operation to learn the fully released position of the accel-
erator pedal by monitoring the accelerator pedal position sensor output signal. It must be performed each time
harness connector of accelerator pedal position sensor or ECM is disconnected.
OPERATION PROCEDURE
1. Make sure that accelerator pedal is fully released.
2. Turn ignition switch “ON” and wait at least 2 seconds.
3. Turn ignition switch “OFF” wait at least 10 seconds.
4. Turn ignition switch “ON” and wait at least 2 seconds.
5. Turn ignition switch “OFF” wait at least 10 seconds.
Idle Air Volume LearningEBS00BF1
DESCRIPTION
“Idle Air Volume Learning” is an operation to learn the idle air volume that keeps each engine within the spe-
cific range. It must be performed under any of the following conditions:
lEach time electric throttle control actuator or ECM is replaced.
lIdle speed or ignition timing is out of specification.
SEF166Y
PBIB0514E