NISSAN X-TRAIL 2003 Service Repair Manual

DTC P0642, P0643 SENSOR POWER SUPPLY
EC-1103
[YD (WITH EURO-OBD)]
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Removal and InstallationEBS011CK
ACCELERATOR PEDAL
Refer to ACC-2, "ACCELERATOR CONTROL SYSTEM" .

EC-1104
[YD (WITH EURO-OBD)]
DTC P0652, P0653 SENSOR POWER SUPPLY

DTC P0652, P0653 SENSOR POWER SUPPLYPFP:18002
DescriptionEBS011CL
The accelerator pedal position sensor is installed on the upper end
of the accelerator pedal assembly. The sensors detect the accelera-
tor pedal position and sends a signal to the ECM. The ECM uses the
signal to determine the amount of fuel to be injected.
CONSULT-II Reference Value in Data Monitor ModeEBS011CM
Specification data are reference values.
*: These signals are converted by ECM internally. Thus, these differ from ECM terminals voltage.
ECM Terminals and Reference ValueEBS011CN
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.
PBIB1741E
MONITOR ITEM CONDITION SPECIFICATION
ACCEL POS SEN*

Ignition switch: ON
(Engine stopped)Accelerator pedal: Fully released 0.2 - 0.7V
Accelerator pedal: Fully depressed 3.9 - 4.9V
ACCEL SEN 2*

Ignition switch: ON
(Engine stopped)Accelerator pedal: Fully released 0.1 - 0.4V
Accelerator pedal: Fully depressed 1.9 - 2.4V
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
83 WAccelerator pedal position
sensor 1[Ignition switch ON]

Engine stopped

Accelerator pedal: Fully released0.5 - 1.0V
[Ignition switch ON]

Engine stopped

Accelerator pedal: Fully depressed4.2 - 5.2V
84 RAccelerator pedal position
sensor 1 ground[Ignition switch ON]Approximately 0.3V
85 —Sensor ground
(Accelerator pedal posi-
tion sensor shield circuit)[Ignition switch ON]Approximately 0.3V
90 LAccelerator pedal position
sensor 2 power supply[Ignition switch ON]Approximately 5.3V

DTC P0652, P0653 SENSOR POWER SUPPLY
EC-1105
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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-1107, "
Diagnostic Proce-
dure" .
WITH GST
Follow the procedure “WITH CONSULT-II” above.
91 GAccelerator pedal position
sensor 2[Ignition switch ON]

Engine stopped

Accelerator pedal: Fully released0.4 - 0.7V
[Ignition switch ON]

Engine stopped

Accelerator pedal: Fully depressed2.2 - 2.7V
92 YAccelerator pedal position
sensor 2 ground[Ignition switch ON]Approximately 0.3V TERMI-
NAL
NO.WIRE
COLORITEM CONDITIONDATA
(DC Voltage and Pulse Signal)
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P0652Accelerator pedal position
sensor 2 power supply cir-
cuit lowECM detects a voltage of power source for the
APP sensor 2 is excessively low.

Harness or connectors
(The APP sensor 2 power supply cir-
cuit is open or shorted.)

Accelerator pedal position sensor
(Accelerator pedal position sensor 2) P0653Accelerator pedal position
sensor 2 power supply cir-
cuit highECM detects a voltage of power source for the
APP sensor 2 is excessively high.
SEF817Y

EC-1106
[YD (WITH EURO-OBD)]
DTC P0652, P0653 SENSOR POWER SUPPLY

Wiring DiagramEBS011CQ
TBWA0732E

DTC P0652, P0653 SENSOR POWER SUPPLY
EC-1107
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Diagnostic ProcedureEBS011CR
1. CHECK GROUND CONNECTIONS
1. Turn ignition switch OFF.
2. Loosen and retighten engine ground screws. Refer to EC-943, "
Ground Inspection" .
OK or NG
OK >> GO TO 2.
NG >> Repair or replace ground connections.
PBIB2020E

EC-1108
[YD (WITH EURO-OBD)]
DTC P0652, P0653 SENSOR POWER SUPPLY

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 3.
NG >> Repair open circuit or short to ground or short to power
in harness or connectors.
3. CHECK APP SENSOR
Refer to EC-1108, "
Component Inspection" .
OK or NG
OK >> GO TO 4.
NG >> Replace accelerator pedal assembly.
4. CHECK INTERMITTENT INCIDENT
Refer to EC-936, "
TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" .
>>INSPECTION END
Component InspectionEBS011CS
ACCELERATOR PEDAL POSITION SENSOR
1. Reconnect all harness connectors disconnected.
2. Turn ignition switch ON.
3. Check voltage between ECM terminals 83 (APP sensor 1 sig-
nal), 91 (APP sensor 2 signal) and engine body under the fol-
lowing conditions.
4. If NG, replace accelerator pedal assembly.
PBIB1893E
Voltage: Approximately 5.3V
PBIB0915E
Terminal Accelerator pedal Voltage
83
(Accelerator pedal position
sensor 1)Fully released 0.5 - 1.0V
Fully depressed 4.2 - 5.2V
91
(Accelerator pedal position
sensor 2)Fully released 0.4 - 0.7V
Fully depressed 2.2 - 2.7V
MBIB0615E

DTC P0652, P0653 SENSOR POWER SUPPLY
EC-1109
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Removal and InstallationEBS011CT
ACCELERATOR PEDAL
Refer to ACC-2, "ACCELERATOR CONTROL SYSTEM" .

EC-1110
[YD (WITH EURO-OBD)]
DTC P0686 ECM RELAY

DTC P0686 ECM RELAYPFP:25230
ECM Terminals and Reference valveEBS011CU
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 E C - 111 2 , "
Diagnostic Procedure" .
WITH GST
Follow the procedure “WITH CONSULT-II” above.
TERMI-
NAL
NO.WIRE
COLORITEM CONDITIONDATA
(DC Voltage)
105 G ECM relay (self-shutoff)[Ignition switch ON]
[Ignition switch OFF]

For a few seconds after turning ignition
switch OFFApproximately 1.2V
[Ignition switch OFF]

More than a few seconds after turning igni-
tion switch OFFBATTERY VOLTAGE
(11 - 14V)
113 G ECM relay (self-shutoff)[Ignition switch ON]
[Ignition switch OFF]

For a few seconds after turning ignition
switch OFFApproximately 1.2V
[Ignition switch OFF]

More than a few seconds after turning igni-
tion switch OFFBATTERY VOLTAGE
(11 - 14V)
11 9
120Y
RPower supply for ECM[Ignition switch ON]BATTERY VOLTAGE
(11 - 14V)
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P0686 ECM 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

DTC P0686 ECM RELAY
EC-1111
[YD (WITH EURO-OBD)]
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Wiring DiagramEBS011V8
TBWA0576E

EC-1112
[YD (WITH EURO-OBD)]
DTC P0686 ECM RELAY

Diagnostic ProcedureEBS011CY
1. CHECK ECM OUTPUT SIGNAL CIRCUIT FOR SHORT TO GROUND
1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Check harness continuity between ECM terminals 105, 113 and ground.
Refer to Wiring Diagram.
OK or NG
OK >> GO TO 2.
NG >> Repair short to ground in harness or connectors.
2. CHECK ECM INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Disconnect ECM relay.
2. Check harness continuity between ECM terminal 119 and ECM
relay terminal 5, ECM terminals 120 and ECM relay terminal 7.
Refer to Wiring Diagram.
3. Also check harness for short to ground and short to power.
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 ECM RELAY
Refer to E C - 111 2 , "
Component Inspection" .
OK or NG
OK >> GO TO 4.
NG >> Replace ECM relay.
4. CHECK INTERMITTENT INCIDENT
Refer to EC-936, "
TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" .
>>INSPECTION END
Component InspectionEBS011CZ
ECM RELAY
1. Apply 12V direct current between ECM relay terminals 1 and 2.
2. Check continuity between relay terminals 3 and 5, 6 and 7.
3. If NG, replace ECM relay.Continuity should not exist.
Continuity should exist.
PBIB1899E
Condition Continuity
12V direct current supply between ter-
minals 1 and 2Ye s
OFF No
PBIB0077E