sensor NISSAN X-TRAIL 2003 Service Repair Manual

EC-1394
[YD (WITHOUT EURO-OBD)]
DTC P0652, P0653 SENSOR POWER SUPPLY

On Board Diagnosis LogicEBS0122X
The MI will not light up for these self-diagnoses.
DTC Confirmation ProcedureEBS0122Y
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-1396, "
Diagnostic Proce-
dure" .
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

DTC P0652, P0653 SENSOR POWER SUPPLY
EC-1395
[YD (WITHOUT EURO-OBD)]
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Wiring DiagramEBS0122Z
TBWA0732E

EC-1396
[YD (WITHOUT EURO-OBD)]
DTC P0652, P0653 SENSOR POWER SUPPLY

Diagnostic ProcedureEBS01230
1. CHECK GROUND CONNECTIONS
1. Turn ignition switch OFF.
2. Loosen and retighten engine ground screws. Refer to EC-1267, "
Ground Inspection" .
OK or NG
OK >> GO TO 2.
NG >> Repair or replace ground connections.
PBIB2020E

DTC P0652, P0653 SENSOR POWER SUPPLY
EC-1397
[YD (WITHOUT 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 3.
NG >> Repair open circuit or short to ground or short to power
in harness or connectors.
3. CHECK APP SENSOR
Refer to EC-1397, "
Component Inspection" .
OK or NG
OK >> GO TO 4.
NG >> Replace accelerator pedal assembly.
4. CHECK INTERMITTENT INCIDENT
Refer to EC-1260, "
TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" .
>>INSPECTION END
Component InspectionEBS01231
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

EC-1398
[YD (WITHOUT EURO-OBD)]
DTC P0652, P0653 SENSOR POWER SUPPLY

Removal and InstallationEBS01232
ACCELERATOR PEDAL
Refer to ACC-2, "ACCELERATOR CONTROL SYSTEM" .

DTC P1272 FUEL PUMP
EC-1417
[YD (WITHOUT EURO-OBD)]
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: Average voltage for pulse signal (Actual pulse signal can be confirmed by oscilloscope.)
On Board Diagnosis LogicEBS0123S
The MI will not light up for this self-diagnosis.
DTC Confirmation ProcedureEBS0123T
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. Start engine and keep engine speed more than 4,000 rpm for at
least 5 seconds, then release the accelerator pedal.
4. If 1st trip DTC is detected, go to EC-1419, "
Diagnostic Proce-
dure" .
29 L Fuel pump[Engine is running]

Warm-up condition

Idle speed0.5 - 1.0V
[Engine is running]

Warm-up condition

Engine speed is 2,000 rpm0.5 - 1.0V TERMI-
NAL
NO.WIRE
COLORITEM CONDITIONDATA
(DC Voltage and Pulse Signal)
MBIB0887E
MBIB0888E
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P1272Fuel rail pressure relief
valve openFuel rail pressure relief valve is open
because of fuel pressure control system mal-
function.

Harness or connectors
(Fuel pump circuit is open or shorted.)

Fuel pump

Fuel rail pressure sensor

Air mixed with fuel

Lack of fuel

Fuel transport pump operation
SEF817Y

EC-1420
[YD (WITHOUT EURO-OBD)]
DTC P1272 FUEL PUMP

4. CHECK FUEL PUMP GROUND CIRCUIT FOR OPEN AND SHORT
1. Check harness continuity between ECM terminal 29 and fuel pump terminal 1.
Refer to Wiring Diagram.
2. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 5.
NG >> Repair open circuit or short to ground or short to power in harness or connectors.
5. CHECK FUEL PUMP
Refer to EC-1420, "
Component Inspection" .
OK or NG
OK >> GO TO 6.
NG >> GO TO 8.
6. CHECK FUEL RAIL PRESSURE SENSOR
Refer to EC-1312, "
Component Inspection" .
OK or NG
OK >> GO TO 7.
NG >> Replace fuel rail.
7. CHECK INTERMITTENT INCIDENT
Refer to EC-1260, "
TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" .
OK or NG
OK >> GO TO 8.
NG >> Repair or replace.
8. REPLACE FUEL PUMP
1. Replace fuel pump.
2. Perform Fuel Pump Learning Value Clearing. Refer to EC-1221, "
Fuel Pump Learning Value Clearing" .
>>INSPECTION END
Component InspectionEBS012AP
FUEL PUMP
1. Check continuity between fuel supply pump terminals 1 and 2.
2. If NG, replace fuel pump.
Removal and InstallationEBS0123W
FUEL RAIL
Refer to EM-157, "INJECTION TUBE AND FUEL INJECTOR" . Continuity should exist.
Continuity should exist.
SEF807Z

DTC P1273 FUEL PUMP
EC-1423
[YD (WITHOUT EURO-OBD)]
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: Average voltage for pulse signal (Actual pulse signal can be confirmed by oscilloscope.)
On Board Diagnosis LogicEBS01240
The MI will not light up for this self-diagnosis.
DTC Confirmation ProcedureEBS01241
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. Start engine and warm it up to normal operating temperature.
2. Select “DATA MONITOR” mode with CONSULT-II.
3. Keep engine speed more than 2,000 rpm for at least 10 sec-
onds.
4. If 1st trip DTC is detected, go to EC-1425, "
Diagnostic Proce-
dure" .
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P1273 Fuel pump insufficient flowECM detects the abnormal pulse of fuel pres-
sure.

Fuel pump

Air mixed with fuel

Lack of fuel

Fuel rail pressure sensor

Fuel transport pump operation
SEF817Y

EC-1426
[YD (WITHOUT EURO-OBD)]
DTC P1273 FUEL PUMP

5. CHECK FUEL RAIL PRESSURE SENSOR
Refer to EC-1312, "
Component Inspection" .
OK or NG
OK >> GO TO 6.
NG >> Replace fuel rail.
6. CHECK FUEL PUMP
Refer to EC-1426, "
Component Inspection" .
OK or NG
OK >> GO TO 8.
NG >> GO TO 7.
7. REPLACE FUEL PUMP
1. Replace fuel pump.
2. Perform Fuel Pump Learning Valve Clearing. Refer to EC-1221, "
Fuel Pump Learning Value Clearing" .
>>INSPECTION END
8. CHECK INTERMITTENT INCIDENT
Refer to EC-1260, "
TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" .
>>INSPECTION END
Component InspectionEBS01244
FUEL PUMP
1. Check continuity between fuel supply pump terminals 1 and 2.
2. If NG, replace fuel pump.
Removal and InstallationEBS01245
FUEL PUMP
Refer to EM-161, "FUEL PUMP" . Continuity should exist.
SEF807Z

EC-1428
[YD (WITHOUT EURO-OBD)]
DTC P1274 FUEL PUMP

: Average voltage for pulse signal (Actual pulse signal can be confirmed by oscilloscope.)
On Board Diagnosis LogicEBS01249
DTC Confirmation ProcedureEBS0124A
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. Tuning ignition switch ON.
2. Select “DATA MONITOR” mode with CONSULT-II.
3. Start engine and let idle for at least 5 seconds.
4. If DTC is detected, go to EC-1430, "
Diagnostic Procedure" .
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P1274 Fuel pump protectionFuel pressure is too much higher than the target
value.

Harness or connectors
(The fuel pump circuit is open or
shorted.)

Fuel pump

Fuel rail pressure sensor
SEF817Y