2005 NISSAN X-TRAIL ignition

DTC P0628, P0629 FUEL PUMP
EC-1231
[YD (WITH EURO-OBD)]
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DTC P0628, P0629 FUEL PUMPPFP:16700
DescriptionEBS011C3
To control the amount of the fuel inhalation of the fuel pump, a plunger is built into the fuel pump. When the
amount of the fuel inhalation of fuel increases, the fuel pump raises the fuel exhalation pressure. As a result,
the fuel injection pressure is raised. When the load of the engine increases, the ECM sends a signal to the fuel
pump to raise the injection pressure.
CONSULT-II Reference Value in Data Monitor ModeEBS011C4
Specification data are reference values.
On Board Diagnosis LogicEBS011C6
DTC Confirmation ProcedureEBS011C7
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. Let engine idle for at least 5 seconds.
4. If 1st trip DTC is detected, go to EC-1234, "
Diagnostic Proce-
dure" .
WITH GST
Follow the procedure “WITH CONSULT-II” above.
MONITOR ITEM CONDITION SPECIFICATION
PUMP CURRENT

Engine: After warming up

Air conditioner switch: OFF

Shift lever: Neutral position

No-loadIdle 1,700 - 1,900 mA
2,000 rpm 1,600 - 1,800 mA
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P0628
0628Fuel pump control circuit
low inputECM detects a control circuit for the fuel pump is
open or short to ground.

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

Fuel pump P0629
0629Fuel pump control circuit
high outputECM detects a control circuit for the fuel pump is
short to power.
SEF817Y

EC-1234
[YD (WITH EURO-OBD)]
DTC P0628, P0629 FUEL PUMP

Diagnostic ProcedureEBS011C9
1. CHECK ECM OUTPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch OFF.
2. Disconnect ECM harness connector and fuel pump harness
connector.
3. Check harness continuity between ECM terminal 10 and fuel
pump terminal 2.
Refer to Wiring Diagram.
4. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 2.
NG >> Repair open circuit or short to ground or short to power
in harness or connectors.
2. 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 3.
NG >> Repair open circuit or short to ground or short to power in harness or connectors.
3. CHECK FUEL PUMP
Refer to EC-1235, "
Component Inspection" .
OK or NG
OK >> GO TO 5.
NG >> GO TO 4.
4. REPLACE FUEL PUMP
1. Replace fuel pump.
2. Perform Fuel Pump Learning Value Clearing. Refer to EC-994, "
Fuel Pump Learning Value Clearing" .
>>INSPECTION END
5. CHECK INTERMITTENT INCIDENT
Refer to EC-1045, "
TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" .
>>INSPECTION END Continuity should exist.
PBIB1943E
Continuity should exist.

EC-1236
[YD (WITH EURO-OBD)]
DTC P0642, P0643 SENSOR POWER SUPPLY

DTC P0642, P0643 SENSOR POWER SUPPLYPFP:18002
On Board Diagnosis LogicEBS011CF
DTC Confirmation ProcedureEBS011CG
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-1238, "
Diagnostic Proce-
dure" .
WITH GST
Follow the procedure “WITH CONSULT-II” above.
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P0642
0642Sensor power supply cir-
cuit low inputECM detects a voltage of power source for sen-
sor is excessively low.

Harness or connectors
(The APP sensor 1 power supply cir-
cuit is shorted.)

Accelerator pedal position sensor
(Accelerator pedal position sensor 1) P0643
0643Sensor power supply cir-
cuit high inputECM detects a voltage of power source for Sen-
sor is excessively high.
SEF817Y

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

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