Nissan Pathfinder. Manual - part 527

EC-414

< DTC/CIRCUIT DIAGNOSIS >

[VQ35DE]

P2135 TP SENSOR

4. Also check harness for short to ground and short to power.
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 THROTTLE POSITION SENSOR INPUT SIGNAL CIRCUIT

1. Check the continuity between electric throttle control actuator harness connector and ECM harness con-

nector.

2. Also check harness for short to ground and short to power.
Is the inspection result normal?

YES

>> GO TO 4.

NO

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

4.

CHECK THROTTLE POSITION SENSOR

Check throttle position sensor. Refer to 

EC-415, "Component Inspection"

.

Is the inspection result normal?

YES

>> Check intermittent incident. Refer to 

GI-49, "Intermittent Incident"

.

NO

>> Replace electric throttle control actuator. Refer to 

EM-26, "Removal and Installation"

.

Component Inspection

INFOID:0000000009178341

1.

CHECK THROTTLE POSITION SENSOR

1. Turn ignition switch OFF.

2. Reconnect all harness connectors disconnected.

3. Perform 

EC-142, "Description"

.

4. Turn ignition switch ON.

5. Shift selector lever position to D.

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

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace electric throttle control actuator. Refer to 

EM-26, "Removal and Installation"

.

Electric throttle control actuator

ECM

Continuity

Connector

Terminal

Connector

Terminal

F50

4

F51

19

Existed

Electric throttle control actuator

ECM

Continuity

Connector

Terminal

Connector

Terminal

F50

2

F51

22

Existed

3

23

ECM

Condition

Voltage

Connector

+

–

Terminal

F51

22

19

Accelerator pedal

Fully released

More than 0.36 V

Fully depressed

Less than 4.75 V

23

Fully released

Less than 4.75 V

Fully depressed

More than 0.36 V

P2138 APP SENSOR

EC-415

< DTC/CIRCUIT DIAGNOSIS >

[VQ35DE]

C

D

E

F

G

H

I

J

K

L

M

A

EC

N

P

O

P2138 APP SENSOR

DTC Logic

INFOID:0000000009178342

DTC DETECTION LOGIC

NOTE:

If DTC P2138 is displayed with DTC P0643, first perform the trouble diagnosis for DTC P0643. Refer to

EC-354, "DTC Logic"

.

DTC CONFIRMATION PROCEDURE

1.

PRECONDITIONING

If DTC Confirmation Procedure has been previously conducted, always perform the following before conduct-

ing the next test.

1. Turn ignition switch OFF and wait at least 10 seconds.

2. Turn ignition switch ON.

3. Turn ignition switch OFF and wait at least 10 seconds.

TESTING CONDITION:

Before performing the following procedure, confirm that battery voltage is more than 8 V at idle.

>> GO TO 2.

2.

PERFORM DTC CONFIRMATION PROCEDURE

1. Start engine and let it idle for 1 second.

2. Check DTC.
Is DTC detected?

YES

>> Proceed to 

EC-416, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000009178343

1.

CHECK APP SENSOR 1 POWER SUPPLY

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.

DTC No.

CONSULT screen terms

(Trouble diagnosis content)

DTC detecting condition

Possible cause

P2138

APP SENSOR
(Throttle/Pedal position 
sensor/switch “D” / “E” volt-
age correlation)

Rationally incorrect voltage is sent to ECM 
compared with the signals from APP sensor 1 
and APP sensor 2.

• Harness or connector

(APP sensor 1 or 2 circuit is open or 
shorted.)
[CKP sensor (POS) circuit is shorted.]
(Refrigerant pressure sensor circuit is 
shorted.)
(EVAP control system pressure sensor 
circuit is shorted.)

• Accelerator pedal position sensor

(APP sensor 1 or 2)

• Crankshaft position sensor (POS)
• EVAP control system pressure sensor
• Refrigerant pressure sensor
• Sensor power supply 2 circuit

APP sensor

Ground

Voltage 

(Approx.)

Connector

Terminal

E31

4

Ground

5 V

EC-416

< DTC/CIRCUIT DIAGNOSIS >

[VQ35DE]

P2138 APP SENSOR

NO

>> GO TO 2.

2.

CHECK APP SENSOR 1 POWER SUPPLY CIRCUIT

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 3.

NO

>> Repair or replace error-detected parts.

3.

CHECK APP SENSOR 2 POWER SUPPLY

1. Turn ignition switch ON.

2. Check the voltage between APP sensor harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 6.

NO

>> GO TO 4.

4.

CHECK APP SENSOR 2 POWER SUPPLY CIRCUIT

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 or replace error-detected parts.

5.

CHECK SENSOR POWER SUPPLY 2 CIRCUIT

Check sensor power supply 2 circuit. Refer to 

EC-450, "Diagnosis Procedure"

.

Is the inspection result normal?

YES

>> Perform the trouble diagnosis for power supply circuit.

NO

>> Repair or replace error-detected parts.

6.

CHECK APP SENSOR GROUND CIRCUIT

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.

APP sensor

ECM

Continuity

Connector

Terminal

Connector

Terminal

E31

4

E16

99

Existed

APP sensor

Ground

Voltage 

(Approx.)

Connector

Terminal

E31

5

Ground

5 V

APP sensor

ECM

Continuity

Connector

Terminal

Connector

Terminal

E31

5

E16

103

Existed

APP sensor

ECM

Continuity

Connector

Terminal

Connector

Terminal

E31

2

E16

100

Existed

1

116

P2138 APP SENSOR

EC-417

< DTC/CIRCUIT DIAGNOSIS >

[VQ35DE]

C

D

E

F

G

H

I

J

K

L

M

A

EC

N

P

O

Is the inspection result normal?

YES

>> GO TO 7.

NO

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

7.

CHECK APP SENSOR INPUT SIGNAL CIRCUIT

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 8.

NO

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

8.

CHECK APP SENSOR

Check APP sensor. Refer to 

EC-418, "Component Inspection"

.

Is the inspection result normal?

YES

>> Check intermittent incident. Refer to 

GI-49, "Intermittent Incident"

.

NO

>> Replace accelerator pedal assembly. Refer to 

ACC-3, "Removal and Installation"

.

Component Inspection

INFOID:0000000009178344

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

>> Replace accelerator pedal assembly. Refer to 

ACC-3, "Removal and Installation"

.

APP sensor

ECM

Continuity

Connector

Terminal

Connector

Terminal

E31

3

E16

97

Existed

6

98

ECM

Condition

Voltage (V)

Connector

+

–

Terminal

E16

97

100

Accelerator pedal

Fully released

0.5 - 1.0

Fully depressed

4.2 - 4.8

98

116

Fully released

0.25 - 0.50

Fully depressed

2.0 - 2.5