Nissan Pathfinder (2010 year). Manual - part 345

7. Perform

EC-853, "Diagnosis Procedure"

Terminal

Accelerator pedal

Voltage

106
(Accelerator pedal position
sensor 1)

Fully released

0.65 - 0.87V

Fully depressed

More than 4.3V

98
(Accelerator pedal position
sensor 2)

Fully released

0.28 - 0.48V

Fully depressed

More than 2.0V

MBIB0023E

2010 Pathfinder

P2135 TP SENSOR

EC-853

< COMPONENT DIAGNOSIS >

[VK56DE]

P2135 TP SENSOR

Component Description

INFOID:0000000005257873

Electric throttle control actuator consists of throttle control motor,

throttle position sensor, etc. The throttle position sensor responds to

the throttle valve movement.

The throttle position sensor has the two sensors. These sensors are

a kind of potentiometer which transform the throttle valve position

into output voltage, and emit the voltage signals to the ECM. The

ECM judges the current opening angle of the throttle valve from

these signals and controls the throttle valve in response to driving

conditions via the throttle control motor.

On Board Diagnosis Logic

INFOID:0000000005257874

This self-diagnosis has the one trip detection logic.

FAIL-SAFE MODE

When the malfunction is detected, the ECM enters fail-safe mode and the MIL illuminates.

DTC Confirmation Procedure

INFOID:0000000005257875

NOTE:

If DTC Confirmation Procedure has been previously conducted, always perform the following procedure

before conducting the next step.

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.

1. Start engine and let it idle for 1 second.
2. Check DTC.
3. If DTC is detected, go to

Diagnosis Procedure

INFOID:0000000005257876

CHECK GROUND CONNECTIONS

1. Turn ignition switch OFF.

2. Loosen and retighten ground screws on the body.

PBIB0145E

DTC No.

Trouble diagnosis name

DTC detecting condition

Possible cause

P2135
2135

Throttle position sensor
circuit range/performance

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

• Harness or connector

(TP sensor 1 and 2 circuit is open or shorted.)
(APP sensor 2 circuit is shorted.)

• Electric throttle control actuator

(TP sensor 1 and 2)

• Accelerator pedal position sensor

(APP sensor 2)

Engine operation condition in fail-safe mode

The ECM controls the electric throttle control actuator in regulating the throttle opening in order for the idle position to be within +10
degrees.
The ECM regulates the opening speed of the throttle valve to be slower than the normal condition.
So, the acceleration will be poor.

2010 Pathfinder

EC-854

< COMPONENT DIAGNOSIS >

[VK56DE]

P2135 TP SENSOR

EC-577, "Ground Inspection"

OK or NG

>> GO TO 2.

>> Repair or replace ground connections.

CHECK THROTTLE POSITION SENSOR POWER SUPPLY CIRCUIT-I

1. Disconnect electric throttle control actuator harness connector.

2. Turn ignition switch ON.

3. Check voltage between electric throttle control actuator terminal

2 and ground with CONSULT-III or tester.

OK or NG

>> GO TO 7.

>> GO TO 3.

CHECK THROTTLE POSITION SENSOR POWER SUPPLY CIRCUIT-II

1. Turn ignition switch OFF.

2. Disconnect ECM harness connector.

3. Check harness continuity between electric throttle control actuator terminal 2 and ECM terminal 47.

Refer to Wiring Diagram.

OK or NG

>> GO TO 4.

>> Repair open circuit.

CHECK SENSOR POWER SUPPLY CIRCUIT

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

BBIA0539E

BBIA0371E

Voltage: Approximately 5 V

PBIB2604E

Continuity should exist.

ECM terminal

Sensor terminal

Reference Wiring Diagram

Electric throttle control actuator terminal 2

EC-908, "Wiring Diagram - ENGINE CONTROL SYSTEM

APP sensor terminal 1

2010 Pathfinder

P2135 TP SENSOR

EC-855

< COMPONENT DIAGNOSIS >

[VK56DE]

OK or NG

>> GO TO 5.

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

CHECK ACCELERATOR PEDAL POSITION SENSOR

EC-860, "Component Inspection"

OK or NG

>> GO TO 11.

>> GO TO 6.

REPLACE ACCELERATOR PEDAL ASSEMBLY

1. Replace the accelerator pedal assembly.

2. Perform

EC-511, "Accelerator Pedal Released Position Learning"

3. Perform

4. Perform

INSPECTION END

CHECK THROTTLE POSITION SENSOR GROUND CIRCUIT FOR OPEN AND SHORT

1. Turn ignition switch OFF.

2. Disconnect ECM harness connector.

3. Check harness continuity between electric throttle control actuator terminal 4 and ECM terminal 66.

Refer to Wiring Diagram.

4. Also check harness for short to ground and short to power.
OK or NG

>> GO TO 8.

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

CHECK THROTTLE POSITION SENSOR INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT

1. Check harness continuity between ECM terminal 50 and electric throttle control actuator terminal 1, ECM

terminal 69 and electric throttle control actuator terminal 3.

Refer to Wiring Diagram.

2. Also check harness for short to ground and short to power.
OK or NG

>> GO TO 9.

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

CHECK THROTTLE POSITION SENSOR

EC-856, "Component Inspection"

OK or NG

>> GO TO 11.

>> GO TO 10.

10.

REPLACE ELECTRIC THROTTLE CONTROL ACTUATOR

1. Replace the electric throttle control actuator.

2. Perform

3. Perform

INSPECTION END

11.

CHECK INTERMITTENT INCIDENT

GI-37, "Intermittent Incident"

Continuity should exist.

2010 Pathfinder

EC-856

< COMPONENT DIAGNOSIS >

[VK56DE]

P2135 TP SENSOR

INSPECTION END

Component Inspection

INFOID:0000000005257877

THROTTLE POSITION SENSOR

1. Reconnect all harness connectors disconnected.
2. Perform

3. Turn ignition switch ON.
4. Shift selector lever to the D position.
5. Check voltage between ECM terminals 50 (TP sensor 1 signal)

and ground, 69 (TP sensor 2 signal) and ground under the fol-

lowing conditions.

6. If NG, replace electric throttle control actuator and go to the next

step.

7. Perform

8. Perform

EC-784, "DTC Confirmation Procedure"

Terminal

Accelerator pedal

Voltage

50
(Throttle position sensor 1)

Fully released

More than 0.36V

Fully depressed

Less than 4.75V

69
(Throttle position sensor 2)

Fully released

Less than 4.75V

Fully depressed

More than 0.36V

PBIB1530E

2010 Pathfinder

P2138 APP SENSOR

EC-857

< COMPONENT DIAGNOSIS >

[VK56DE]

P2138 APP SENSOR

Component Description

INFOID:0000000005257878

The accelerator pedal position sensor is installed on the upper end

of the accelerator pedal assembly. The sensor detects the accelera-

tor position and sends a signal to the ECM.

Accelerator pedal position sensor has two sensors. These sensors

are a kind of potentiometer which transform the accelerator pedal

position into output voltage, and emit the voltage signal to the ECM.

The ECM judges the current opening angle of the accelerator pedal

from these signals and controls the throttle valve in response to driv-

ing conditions via the throttle control motor.

Idle position of the accelerator pedal is determined by the ECM

receiving the signal from the accelerator pedal position sensor. The

ECM uses this signal for the engine operation such as fuel cut.

On Board Diagnosis Logic

INFOID:0000000005257879

This self-diagnosis has the one trip detection logic.

NOTE:

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

FAIL-SAFE MODE

When the malfunction is detected, ECM enters fail-safe mode and the MIL illuminates.

DTC Confirmation Procedure

INFOID:0000000005257880

NOTE:

If DTC Confirmation Procedure has been previously conducted, always perform the following procedure

before conducting the next step.

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.

1. Start engine and let it idle for 1 second.
2. Check DTC.
3. If DTC is detected, go to

EC-857, "Diagnosis Procedure"

Diagnosis Procedure

INFOID:0000000005257881

CHECK GROUND CONNECTIONS

1. Turn ignition switch OFF.

2. Loosen and retighten ground screws on the body.

PBIB1741E

DTC No.

Trouble diagnosis name

DTC detecting condition

Possible cause

P2138
2138

Accelerator pedal position
sensor circuit range/per-
formance

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.)
(TP sensor circuit is shorted.)

• Accelerator pedal position sensor 1 or 2
• Electric throttle control actuator

(TP sensor)

Engine operating condition in fail-safe mode

2010 Pathfinder

EC-858

< COMPONENT DIAGNOSIS >

[VK56DE]

P2138 APP SENSOR

EC-577, "Ground Inspection"

OK or NG

>> GO TO 2.

>> Repair or replace ground connections.

CHECK APP SENSOR 1 POWER SUPPLY CIRCUIT

1. Disconnect accelerator pedal position (APP) sensor (1) harness

connector.

2. Turn ignition switch ON.

3. Check voltage between APP sensor terminal 2 and ground with

CONSULT-III or tester.

OK or NG

>> GO TO 3.

>> Repair open circuit or short to ground or short to power

in harness or connectors.

CHECK APP SENSOR 2 POWER SUPPLY CIRCUIT-I

1. Turn ignition switch ON.

2. Check voltage between APP sensor terminal 1 and ground with

CONSULT-III or tester.

OK or NG

>> GO TO 8.

>> GO TO 4.

CHECK APP SENSOR 2 POWER SUPPLY CIRCUIT-II

1. Turn ignition switch OFF.

2. Disconnect ECM harness connector.

3. Check harness continuity between APP sensor terminal 1 and ECM terminal 91.

Refer to Wiring Diagram.

BBIA0539E

AWBIA0079ZZ

Voltage: Approximately 5 V

PBIB2608E

Voltage: Approximately 5V

PBIB2611E

2010 Pathfinder

P2138 APP SENSOR

EC-859

< COMPONENT DIAGNOSIS >

[VK56DE]

OK or NG

>> GO TO 5.

>> Repair open circuit in harness or connectors.

CHECK SENSOR POWER SUPPLY CIRCUIT

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

OK or NG

>> GO TO 6.

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

CHECK THROTTLE POSITION SENSOR

EC-856, "Component Inspection"

OK or NG

>> GO TO 12.

>> GO TO 7.

REPLACE ELECTRIC THROTTLE CONTROL ACTUATOR

1. Replace the electric throttle control actuator.

2. Perform

3. Perform

INSPECTION END

CHECK APP SENSOR GROUND CIRCUIT FOR OPEN AND SHORT

1. Turn ignition switch OFF.

2. Disconnect ECM harness connector.

3. Check harness continuity between ECM terminal 82 and APP sensor terminal 4, ECM terminal 83 and

APP sensor terminal 5.

Refer to Wiring Diagram.

4. Also check harness for short to ground and short to power.
OK or NG

>> GO TO 9.

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

CHECK APP SENSOR INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT

1. Check harness continuity between ECM terminal 106 and APP sensor terminal 3, ECM terminal 98 and

APP sensor terminal 6.

Refer to Wiring Diagram.

2. Also check harness for short to ground and short to power.
OK or NG

>> GO TO 10.

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

10.

CHECK ACCELERATOR PEDAL POSITION SENSOR