Nissan Qashqai (2007-2010). Manual — part 468

P0651 SENSOR POWER SUPPLY

EC-1391

< COMPONENT DIAGNOSIS >

[K9K]

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P0651 SENSOR POWER SUPPLY

DTC Logic

INFOID:0000000001115098

DTC DETECTION LOGIC

NOTE:
• If DTC P0651 is displayed with DTC P0225, P0235, first perform trouble diagnosis for DTC P0651.
• Conditions for applying the diagnostic procedure to the stored DTCs:

The DTC is declared present after the ignition has been switched on.

• If the DTC is present:
• Malfunction indicator (Red) lights up.

Diagnosis Procedure

INFOID:0000000001098822

1.

CHECK GROUND CONNECTION

1.

Turn ignition switch OFF.

2.

Check ground connection E17. Refer to Ground Inspection in

GI-41, "Circuit Inspection"

.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair or replace ground connection.

2.

CHECK ACCELERATOR PEDAL POSITION SENSOR 1 POWER SUPPLY CIRCUIT

1.

Disconnect accelerator pedal position (APP) sensor harness connector.

2.

Turn ignition switch ON.

3.

Check the voltage between APP sensor harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> GO TO 3.

3.

CHECK SENSOR POWER SUPPLY CIRCUITS

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

Is the inspection result normal?

YES

>> GO TO 5.

NO

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

4.

CHECK SENSOR GROUND CIRCUITS

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

DTC No.

Trouble diagnosis name

Possible cause

P0651

SENSOR POWER SUPPLY CIRCUIT
• 1.DEF: Parameter at minimum level
• 2.DEF: Parameter at maximum level

• Harness or connectors

(The APP sensor 1 power supply circuit is shorted.)
(Turbocharger boost sensor circuit is shorted.)

• Accelerator pedal position sensor

(APP sensor 1)

• Turbocharger boost sensor

APP sensor

Ground

Voltage

Connector

Terminal

E110

4

Ground

Approx. 5V

ECM

Sensor

Connector

Terminal

Name

Connector

Terminal

E60

122

APP sensor

E110

4

F85

36

Turbocharger boost sensor

F91

1

EC-1392

< COMPONENT DIAGNOSIS >

[K9K]

P0651 SENSOR POWER SUPPLY

Is the inspection result normal?

YES

>> GO TO 5.

NO

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

5.

CHECK TURBOCHARGER BOOST SENSOR

• Turbocharger boost sensor (Refer to

EC-1330, "Component Inspection"

.)

Is the inspection result normal?

YES

>> GO TO 6.

NO

>> Replace Turbocharger boost sensor.

6.

CHECK APP SENSOR

Refer to

EC-1359, "Component Inspection"

.

Is the inspection result normal?

YES

>> GO TO 7.

NO

>> Replace APP sensor.

7.

CHECK INTERMITTENT INCIDENT

Refer to

GI-39, "Intermittent Incident"

.

>> INSPECTION END

ECM

Sensor

Connector

Terminal

Name

Connector

Terminal

E60

127

APP sensor

E110

2

F85

43

Turbocharger boost sensor

F91

2

P0685 ECM RELAY

EC-1393

< COMPONENT DIAGNOSIS >

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P0685 ECM RELAY

DTC Logic

INFOID:0000000001115099

DTC DETECTION LOGIC

NOTE:
• If the DTC is present:
- Malfunction indicator (Red) lights up.

Diagnosis Procedure

INFOID:0000000000967588

1.

CHECK ECM POWER SUPPLY CIRCUIT

1.

Turn ignition switch OFF.

2.

Check the voltage between ECM harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> GO TO 4.

2.

CHECK ECM POWER SUPPLY CIRCUIT-II

1.

Disconnect ECM harness connector.

2.

Disconnect IPDM E/R harness connector E11.

3.

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

4.

Also check harness for short to ground and short to power.

Is the inspection result normal?

YES

>> GO TO 6.

NO

>> GO TO 3.

3.

DETECT MALFUNCTIONING PART

Check the following.
• Harness or connectors E7, E121
• Harness for open or short between ECM and IPDM E/R

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

4.

CHECK ECM POWER SUPPLY CIRCUIT-III

1.

Disconnect ECM harness connector.

2.

Disconnect IPDM E/R harness connector E11.

3.

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

DTC No.

Trouble diagnosis name

Possible cause

P0685

ECM RELAY CIRCUIT
• CO: Open circuit
• CC.0: Short circuit to ground
• CC.1: Short circuit to +12V

• Harness or connectors

(The ECM relay circuit is open or short-
ed.)

• IPDM E/R (ECM relay)

ECM

Ground

Voltage

Connector

Terminal

F68

60

Ground

Battery voltage

ECM

IPDM E/R

Continuity

Connector

Terminal

Connector

Terminal

E68

53

E11

9

Existed

54

EC-1394

< COMPONENT DIAGNOSIS >

[K9K]

P0685 ECM RELAY

4.

Also check harness for short to ground and short to power.

Is the inspection result normal?

YES

>> GO TO 5

NO

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

5.

CHECK 20A FUSE

1.

Disconnect 20A fuse (No. 52) from IPDM E/R.

2.

Check 20A fuse.

Is the inspection result normal?

YES

>> GO TO 6.

NO

>> Replace 20A fuse.

6.

CHECK GROUND CONNECTION

Check ground connection E9. Refer to Ground Inspection in

GI-41, "Circuit Inspection"

.

Is the inspection result normal?

YES

>> GO TO 7.

NO

>> Repair or replace ground connection.

7.

CHECK ECM GROUND CIRCUIT FOR OPEN AND SHORT

1.

Check the continuity between ECM harness connector and ground.

2.

Also check harness for short to power.

Is the inspection result normal?

YES

>> GO TO 8.

NO

>> Repair open circuit or short power in harness or connectors.

8.

CHECK INTERMITTENT INCIDENT

Refer to

GI-39, "Intermittent Incident"

.

Is the inspection result normal?

YES

>> Replace IPDM E/R.

NO

>> Repair or replace.

ECM

IPDM E/R

Continuity

Connector

Terminal

Connector

Terminal

F68

60

E11

15

Existed

ECM

Ground

Continuity

Connector

Terminal

E60

123

Ground

Existed

124

125

128