Nissan X-Trail 32. Manual - part 987

 

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Nissan X-Trail 32. Manual - part 987

 

 

P0651 SENSOR POWER SUPPLY

EC-1077

< DTC/CIRCUIT DIAGNOSIS >

[R9M]

C

D

E

F

G

H

I

J

K

L

M

A

EC

N

P

O

P0651 SENSOR POWER SUPPLY

DTC Description

INFOID:0000000010935763

DTC DETECTION LOGIC

POSSIBLE CAUSE

• Harness or connectors (The sensor power supply 2 circuit is shorted.)
• Refrigerant pressure sensor
• Exhaust electric throttle control actuator
• DPF differential pressure sensor
• Exhaust gas pressure sensor
• Accelerator pedal position sensor 2

FAIL-SAFE

• Air conditioner deactivation
• Torque limitation
• CCSL deactivation with dashboard message
• Freeshift inhibited
• After sales routines forbidden
• FAN 2 activation

DTC CONFIRMATION PROCEDURE

1.

PRECONDITIONING

If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at
least 1 minute before conducting the next test.

>> GO TO 2.

2.

PERFORM DTC CONFIRMATION PROCEDURE

1.

Turn ignition switch ON and wait at least 1 second.

2.

Check DTC.

Is DTC detected?

YES

>> Proceed to 

EC-1077, "Diagnosis Procedure"

.

NO-1

>> To check malfunction symptom before repair: Refer to 

GI-44, "Intermittent Incident"

.

NO-2

>> Confirmation after repair: INSPECTION END

Diagnosis Procedure

INFOID:0000000010935764

1.

CHECK SENSOR POWER SUPPLY

1.

Turn ignition switch ON.

2.

Check the voltage between ECM harness connector and ground.

DTC No.

CONSULT screen terms

(Trouble diagnosis content)

DTC detecting condition

P0651

SEN SUPPLY N-2 VOL
(Sensor reference voltage “B” circuit/open)
• 1.DEF: VOLTAGE TOO LOW
• 2.DEF: VOLTAGE TOO HIGH

• A voltage of sensor power supply is 5.3 V or more.
• A voltage of sensor power supply is 4.7 V or less.

EC-1078

< DTC/CIRCUIT DIAGNOSIS >

[R9M]

P0651 SENSOR POWER SUPPLY

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> GO TO 2.

2.

CHECK SENSOR POWER SUPPLY CIRCUITS

1.

Turn ignition switch OFF.

2.

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

*1: CVT models
*2: M/T models

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair short to ground or short to power in harness or connectors.

3.

CHECK COMPONENTS

Check the following.
• Accelerator pedal position sensor. Refer to 

EC-1025, "Component Inspection (Accelerator Pedal Position

Sensor)"

.

• Refrigerant pressure sensor. Proceed to 

EC-1056, "Diagnosis Procedure"

.

• DPF differential pressure sensor. Proceed to 

EC-1095, "Component Inspection (DPF Differential Pressure

Sensor)"

.

• Exhaust electric throttle control actuator. Proceed to 

EC-1098, "Component Inspection (Exhaust Throttle

Control Motor)"

.

• Exhaust gas pressure sensor. Proceed to 

EC-1048, "Component Inspection (Exhaust Gas Pressure Sen-

sor)"

.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace malfunctioning component.

+

Voltage

(Approx.)

ECM

Connectors

Terminal

E79

10

Ground

5.0 V

F118

99

100

104

ECM

Sensor

Connector

Terminal

Name

Connector

Terminal

E79

10

Accelerator pedal position sensor 2

E110

*1

E167

*2

5

F118

99

Refrigerant pressure sensor

F42

3

100

DPF differential pressure sensor

F88

1

104

Exhaust electric throttle control actuator

F154

1

Exhaust gas pressure sensor

F81

3

P0657 ECM RELAY

EC-1079

< DTC/CIRCUIT DIAGNOSIS >

[R9M]

C

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P0657 ECM RELAY

DTC Description

INFOID:0000000010935765

DTC DETECTION LOGIC

POSSIBLE CAUSE

• Harness or connectors (ECM relay control circuit is shorted.)
• ECM relay

FAIL-SAFE

Not applicable

DTC CONFIRMATION PROCEDURE

1.

PRECONDITIONING

If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at
least 1 minute before conducting the next test.

>> GO TO 2.

2.

PERFORM DTC CONFIRMATION PROCEDURE

1.

Turn ignition switch ON and wait at least 1 second.

2.

Check DTC.

Is DTC detected?

YES

>> Proceed to 

EC-1079, "Diagnosis Procedure"

.

NO-1

>> To check malfunction symptom before repair: Refer to 

GI-44, "Intermittent Incident"

.

NO-2

>> Confirmation after repair: INSPECTION END

Diagnosis Procedure

INFOID:0000000010935766

1.

CHECK FUSE

Check that the fuse is not fusing.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Replace the fuse after repairing the applicable circuit.

2.

CHECK ECM POWER SUPPLY

1.

Reinsert the fuse pulled out.

2.

Turn ignition switch ON.

3.

Check the voltage between ECM harness connector and ground.

DTC No.

CONSULT screen terms

(Trouble diagnosis content)

DTC detecting condition

P0657

MAIN RELAY CONTROL CIRCUIT
(Actuator supply voltage “A” circuit/open)
• CC.0: SHORT CIRCUIT TO EARTH

• ECM detects ECM relay control circuit is short to ground. (ECM relay al-

ways ON)

#84

10A

#85

15A

+

-

Voltage

ECM

Connector

Terminal

E79

5

Ground

Battery voltage

F117

96

EC-1080

< DTC/CIRCUIT DIAGNOSIS >

[R9M]

P0657 ECM RELAY

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> GO TO 3.

3.

CHECK ECM RELAY CONTROL SIGNAL

1.

Turn ignition switch OFF.

2.

Check the voltage between ECM harness connector and ground.

3.

Turn ignition switch ON.

4.

Check the voltage between ECM harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> GO TO 4.

4.

CHECK ECM RELAY CONTROL CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect IPDM E/R harness connector.

3.

Check the continuity between ECM harness connector and IPDM E/R harness connector.

4.

Also check harness for short to ground.

Is the inspection result normal?

YES

>> Check IPDM E/R.

NO

>> Repair or replace error-detected parts.

5.

CHECK ECM POWER SUPPLY CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect IPDM E/R harness connector.

3.

Check the continuity between ECM harness connector and IPDM E/R harness connector.

4.

Also check harness for short to ground.

Is the inspection result normal?

YES

>> Replace IPDM E/R (ECM relay malfunction).

NO

>> Repair or replace error-detected parts.

+

-

Voltage

ECM

Connector

Terminal

F117

41

Ground

Battery voltage

+

-

Voltage

(Approx.)

ECM

Connector

Terminal

F117

41

Ground

0 V

+

+

Continuity

ECM

IPDM E/R

Connector

Terminal

Connector

Terminal

F117

41

F74

93

Existed

+

+

Continuity

ECM

IPDM E/R

Connector

Terminal

Connector

Terminal

E79

5

F72

75

Existed

F117

96

F72

78

 

 

 

 

 

 

 

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