NISSAN X-TRAIL 2005 Service Repair Manual

DTC P0642, P0643 SENSOR POWER SUPPLY
EC-1237
[YD (WITH EURO-OBD)]
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Wiring DiagramEBS011V5
TBWA0731E

EC-1238
[YD (WITH EURO-OBD)]
DTC P0642, P0643 SENSOR POWER SUPPLY

Specification data are reference values and are measured between each terminal and ground.
CAUTION:
Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in dam-
age to the ECM's transistor. Use a ground other than ECM terminals, such as the ground.
Diagnostic ProcedureEBS011CI
1. CHECK GROUND CONNECTIONS
1. Turn ignition switch OFF.
2. Loosen and retighten ground screws on the body. Refer to EC-1055, "
Ground Inspection" .
OK or NG
OK >> GO TO 2.
NG >> Repair or replace ground connections.
TERMI-
NAL
NO.WIRE
COLORITEM CONDITIONDATA
(DC Voltage and Pulse Signal)
82 BAccelerator pedal position
sensor 1 power supply[Ignition switch ON]Approximately 5.3V
PBIB2020E

DTC P0642, P0643 SENSOR POWER SUPPLY
EC-1239
[YD (WITH EURO-OBD)]
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2. CHECK APP SENSOR 1 POWER SUPPLY CIRCUIT
1. Disconnect accelerator pedal position (APP) sensor harness
connector.
2. Turn ignition switch ON.
3. Check voltage between APP sensor terminal 6 and ground with
CONSULT-II or tester.
OK or NG
OK >> GO TO 3.
NG >> Repair open circuit or short to ground or short to power
in harness or connectors.
3. CHECK APP SENSOR
Refer to EC-1105, "
Component Inspection" .
OK or NG
OK >> GO TO 4.
NG >> Replace accelerator pedal assembly.
4. CHECK INTERMITTENT INCIDENT
Refer to EC-1045, "
TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" .
>>INSPECTION END
PBIB1893E
Voltage: Approximately 5.3V
PBIB0914E

EC-1240
[YD (WITH EURO-OBD)]
DTC P0652, P0653 SENSOR POWER SUPPLY

DTC P0652, P0653 SENSOR POWER SUPPLYPFP:18002
On Board Diagnosis LogicEBS011CO
DTC Confirmation ProcedureEBS011CP
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.
WITH CONSULT-II
1. Turn ignition switch ON.
2. Select “DATA MONITOR” mode with CONSULT-II.
3. Wait at least 5 seconds.
4. If 1st trip DTC is detected, go to EC-1242, "
Diagnostic Proce-
dure" .
WITH GST
Follow the procedure “WITH CONSULT-II” above.
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P0652Sensor power supply cir-
cuit lowECM detects a voltage of power source for sen-
sor is excessively low.

Harness or connectors
(APP sensor 2 power supply circuit is
shorted.)
(Crankshaft position sensor circuit is
shorted.)
(Camshaft position sensor circuit is
shorted.)
(Fuel rail pressure sensor circuit is
shorted.)
(Turbocharger boost sensor circuit is
shorted.)

Accelerator pedal position sensor
(Accelerator pedal position sensor 2)

Crankshaft position sensor

Camshaft position sensor

Fuel rail pressure sensor

Turbocharger boost sensor P0653
0653Sensor power supply cir-
cuit high inputECM detects a voltage of power source for Sen-
sor is excessively high.
SEF817Y

DTC P0652, P0653 SENSOR POWER SUPPLY
EC-1241
[YD (WITH EURO-OBD)]
C
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Wiring DiagramEBS011CQ
TBWB0645E

EC-1242
[YD (WITH EURO-OBD)]
DTC P0652, P0653 SENSOR POWER SUPPLY

Specification data are reference values and are measured between each terminal and ground.
CAUTION:
Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in dam-
age to the ECM's transistor. Use a ground other than ECM terminals, such as the ground.
Diagnostic ProcedureEBS011CR
1. CHECK GROUND CONNECTIONS
1. Turn ignition switch OFF.
2. Loosen and retighten ground screws on the body. Refer to EC-1055, "
Ground Inspection" .
OK or NG
OK >> GO TO 2.
NG >> Repair or replace ground connections.
TERMI-
NAL
NO.WIRE
COLORITEM CONDITIONDATA
(DC Voltage)
44 L/W Crankshaft position sensor power supply[Ignition switch ON]Approximately 5.3V
45 G/OR Camshaft position sensor power supply[Ignition switch ON]Approximately 5.3V
63 W Fuel rail pressure sensor power supply[Ignition switch ON]Approximately 5.3V
64 WTurbocharger boost sensor power sup-
ply[Ignition switch ON]Approximately 5.3V
90 LAccelerator pedal position sensor 2
power supply[Ignition switch ON]Approximately 5.3V
PBIB2020E

DTC P0652, P0653 SENSOR POWER SUPPLY
EC-1243
[YD (WITH EURO-OBD)]
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2. CHECK APP SENSOR 2 POWER SUPPLY CIRCUIT
1. Disconnect accelerator pedal position (APP) sensor harness
connector.
2. Turn ignition switch ON.
3. Check voltage between APP sensor terminal 4 and ground with
CONSULT-II or tester.
OK or NG
OK >> GO TO 5.
NG >> GO TO 3.
3. CHECK SENSOR POWER SUPPLY CIRCUITS
Check the following.

Harness for short to power and short to ground, between the following terminals.

ECM pin terminal.
OK or NG
OK >> GO TO 4.
NG >> Repair short to ground or short to power in harness or connectors.
4. CHECK COMPONENTS
Check the following.

Crankshaft position sensor (Refer to EC-1162, "Component Inspection" .)

Camshaft position sensor (Refer to EC-1174, "Component Inspection" .)

Fuel rail pressure sensor (Refer to E C - 111 5 , "Component Inspection" .)

Turbocharger boost sensor (Refer to EC-1156, "Component Inspection" .)
OK or NG
OK >> GO TO 5.
NG >> Replace malfunctioning component.
PBIB1893E
Voltage: Approximately 5.3V
PBIB0915E
ECM terminal Sensor terminal Reference Wiring Diagram
90 APP sensor terminal 1EC-1101
44 Crankshaft position sensor terminal 1EC-1158
45 Camshaft position sensor terminal 3EC-1170
63 Fuel rail pressure sensor terminal 1E C - 1111
64 Turbocharger boost sensor terminal 1EC-1153

EC-1244
[YD (WITH EURO-OBD)]
DTC P0652, P0653 SENSOR POWER SUPPLY

5. CHECK APP SENSOR
Refer to EC-1105, "
Component Inspection" .
OK or NG
OK >> GO TO 6.
NG >> Replace accelerator pedal assembly.
6. CHECK INTERMITTENT INCIDENT
Refer to EC-1045, "
TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" .
>>INSPECTION END

DTC P0686 ECM RELAY
EC-1245
[YD (WITH EURO-OBD)]
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DTC P0686 ECM RELAYPFP:25230
On Board Diagnosis LogicEBS011CV
This self-diagnosis has the one trip detection logic.
The MI will not light up for this self-diagnosis.
DTC Confirmation ProcedureEBS011CW
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.
WITH CONSULT-II
1. Turn ignition switch ON and then turn OFF.
2. Wait at least 30 seconds.
3. Turn ignition switch ON.
4. Select “DATA MONITOR” mode with CONSULT-II.
5. If DTC is detected, go to EC-1247, "
Diagnostic Procedure" .
WITH GST
Follow the procedure “WITH CONSULT-II” above.
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P0686
0686ECM relay circuitECM detects ECM relay is stuck closed even if
ignition switch OFF.

Harness or connectors
(The ECM relay circuit is shorted.)

ECM relay
SEF817Y

EC-1246
[YD (WITH EURO-OBD)]
DTC P0686 ECM RELAY

Wiring DiagramEBS011V8
TBWA0576E