Nissan Murano. Manual - part 580

EC-430

< DTC/CIRCUIT DIAGNOSIS >

[VQ35DE]

P2138 APP SENSOR

Diagnosis Procedure

INFOID:0000000009720189

1.

CHECK GROUND CONNECTION

1.

Turn ignition switch OFF.

2.

Check ground connection E38. Refer to Ground Inspection in 

GI-47, "Circuit Inspection"

.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair or replace ground connection.

2.

CHECK APP 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 3.

NO

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

3.

CHECK APP SENSOR 2 POWER SUPPLY CIRCUIT-I

1.

Turn ignition switch ON.

2.

Check the voltage between APP sensor harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 7.

NO

>> GO TO 4.

4.

CHECK APP SENSOR 2 POWER SUPPLY CIRCUIT-II

1.

Turn ignition switch OFF.

2.

Disconnect ECM harness connector.

3.

Check the continuity between APP sensor harness connector and ECM harness connector.

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> Repair open circuit.

5.

CHECK SENSOR POWER SUPPLY CIRCUIT

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

APP sensor

Ground

Voltage (V)

Connector

Terminal

E110

4

Ground

Approx. 5

APP sensor

Ground

Voltage (V)

Connector

Terminal

E110

5

Ground

Approx. 5

APP sensor

ECM

Continuity

Connector

Terminal

Connector

Terminal

E110

5

E16

87

Existed

ECM

Sensor

Connector

Terminal

Name

Connector

Terminal

F8

72

Refrigerant pressure sensor

E300

1

76

CKP sensor (POS)

F20

1

P2138 APP SENSOR

EC-431

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Is the inspection result normal?

YES

>> GO TO 6.

NO

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

6.

CHECK COMPONENTS

Check the following.
• Crankshaft position sensor (POS) (Refer to 

EC-278, "Component Inspection"

.)

• EVAP control system pressure sensor (Refer to 

EC-312, "Component Inspection"

.)

• Refrigerant pressure sensor (Refer to 

EC-465, "Diagnosis Procedure"

.)

Is the inspection result normal?

YES

>> GO TO 11.

NO

>> Replace malfunctioning components.

7.

CHECK APP SENSOR GROUND CIRCUIT FOR OPEN AND SHORT

1.

Turn ignition switch OFF.

2.

Disconnect ECM harness connector.

3.

Check the continuity between APP sensor harness connector and ECM harness connector.

4.

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

Is the inspection result normal?

YES

>> GO TO 8.

NO

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

8.

CHECK APP SENSOR INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT

1.

Check the continuity between APP sensor harness connector and ECM harness connector.

2.

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

Is the inspection result normal?

YES

>> GO TO 9.

NO

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

9.

CHECK APP SENSOR

Refer to 

EC-424, "Component Inspection"

.

Is the inspection result normal?

YES

>> GO TO 11.

NO

>> GO TO 10.

10.

REPLACE ACCELERATOR PEDAL ASSEMBLY

1.

Replace accelerator pedal assembly. Refer to 

ACC-4, "Exploded View"

.

2.

Refer to 

EC-425, "Special Repair Requirement"

.

E16

87

APP sensor

E110

5

91

EVAP control system pressure sensor

B17

3

ECM

Sensor

Connector

Terminal

Name

Connector

Terminal

APP sensor

ECM

Continuity

Connector

Terminal

Connector

Terminal

E110

2

E16

84

Existed

1

100

APP sensor

ECM

Continuity

Connector

Terminal

Connector

Terminal

E110

3

E16

81

Existed

6

82

EC-432

< DTC/CIRCUIT DIAGNOSIS >

[VQ35DE]

P2138 APP SENSOR

>> INSPECTION END

11.

CHECK INTERMITTENT INCIDENT

Refer to 

GI-44, "Intermittent Incident"

.

>> INSPECTION END

Component Inspection

INFOID:0000000009720190

1.

CHECK ACCELERATOR PEDAL POSITION SENSOR

1.

Reconnect all harness connectors disconnected.

2.

Turn ignition switch ON.

3.

Check the voltage between ECM harness connector terminals under the following conditions.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> GO TO 2.

2.

REPLACE ACCELERATOR PEDAL ASSEMBLY

1.

Replace accelerator pedal assembly. Refer to 

ACC-4, "Exploded View"

.

2.

Go to 

EC-432, "Special Repair Requirement"

.

>> INSPECTION END

Special Repair Requirement

INFOID:0000000009720191

1.

PERFORM ACCELERATOR PEDAL RELEASED POSITION LEARNING

Refer to 

EC-19, "ACCELERATOR PEDAL RELEASED POSITION LEARNING : Special Repair Requirement"

.

>> GO TO 2.

2.

PERFORM THROTTLE VALVE CLOSED POSITION LEARNING

Refer to 

EC-19, "THROTTLE VALVE CLOSED POSITION LEARNING : Special Repair Requirement"

.

>> GO TO 3.

3.

PERFORM IDLE AIR VOLUME LEARNING

Refer to 

EC-20, "IDLE AIR VOLUME LEARNING : Special Repair Requirement"

.

>> END

ECM

Condition

Voltage (V)

+

–

Connector

Terminal

Connector

Terminal

E16

81

(APP sensor 1 sig-

nal)

E16

84

(Sensor ground)

Accelerator pedal

Fully released

0.5 - 1.0

Fully depressed

4.2 - 4.8

82

(APP sensor 2 sig-

nal)

100

(Sensor ground)

Fully released

0.25 - 0.50

Fully depressed

2.0 - 2.5

ASCD BRAKE SWITCH

EC-433

< DTC/CIRCUIT DIAGNOSIS >

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ASCD BRAKE SWITCH

Description

INFOID:0000000009720192

When the brake pedal is depressed, ASCD brake switch is turned OFF and stop lamp switch is turned ON.
ECM detects the state of the brake pedal by those two types of input (ON/OFF signal).
Refer to 

EC-66, "System Diagram"

 for the ASCD function.

Component Function Check

INFOID:0000000009720193

1.

CHECK ASCD BRAKE SWITCH FUNCTION

 With CONSULT

1.

Turn ignition switch ON.

2.

Select “BRAKE SW1” in “DATA MONITOR” mode with CONSULT.

3.

Check “BRAKE SW1” indication under the following conditions.

 Without CONSULT

1.

Turn ignition switch ON.

2.

Check the voltage between ECM harness connector terminals.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Go to 

EC-433, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000009720194

1.

CHECK ASCD BRAKE SWITCH POWER SUPPLY CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect ASCD brake switch harness connector.

3.

Turn ignition switch ON.

4.

Check the voltage between ASCD brake switch harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> GO TO 2.

2.

DETECT MALFUNCTIONING PART

Check the following.
• Fuse block (J/B) connector E103
• 10 A fuse (No.3)
• Harness for open or short between ASCD brake switch and fuse

Monitor item

Condition

Indication

BRAKE SW1

Brake pedal

Slightly depressed

OFF

Fully released

ON

ECM

Condition

Voltage

Connector

+

–

Terminal

Terminal

E16

110

(ASCD brake 

switch signal)

112

Brake pedal

Slightly depressed

Approx. 0 V

Fully released

Battery voltage

ASCD brake switch

Ground

Voltage

Connector

Terminal

E49

1

Ground

Battery voltage