Nissan Frontier. Manual - part 465

P2138 APP SENSOR

EC-431

< DTC/CIRCUIT DIAGNOSIS >

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1. Turn ignition switch OFF.

2. Disconnect ECM harness connector.

3. Check harness continuity between APP sensor terminal 1 and ECM terminal 87.

Refer to Wiring Diagram.

OK or NG

OK

>> GO TO 5.

NG

>> Repair open circuit.

5.

CHECK APP SENSOR 2 POWER SUPPLY CIRCUIT-III

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

OK or NG

OK

>> GO TO 6.

NG

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

6.

CHECK THROTTLE POSITION SENSOR

Refer to 

EC-428, "Component Inspection"

.

OK or NG

OK

>> GO TO 12.

NG

>> GO TO 7.

7.

REPLACE ELECTRIC THROTTLE CONTROL ACTUATOR

1. Replace the electric throttle control actuator. Refer to 

EM-27, "Exploded View"

.

2. Perform 

EC-123, "Throttle Valve Closed Position Learning"

.

3. Perform 

EC-124, "Idle Air Volume Learning"

.

>> INSPECTION END

8.

CHECK APP SENSOR GROUND CIRCUIT FOR OPEN AND SHORT

1. Turn ignition switch OFF.

2. Disconnect ECM harness connector.

3. Check harness continuity between APP sensor terminal 4 and ECM terminal 84, APP sensor terminal 5

and ECM terminal 100.

Refer to Wiring Diagram.

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

OK

>> GO TO 9.

NG

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

9.

CHECK APP SENSOR INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT

1. Check harness continuity between ECM terminal 81 and APP sensor terminal 3, ECM terminal 82 and

APP sensor terminal 6.

Refer to Wiring Diagram.

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

OK

>> GO TO 10.

Continuity should exist.

ECM terminal

Sensor terminal

87

APP sensor terminal 1

47

Electric throttle control actuator terminal 2

Continuity should exist.

Continuity should exist.

EC-432

< DTC/CIRCUIT DIAGNOSIS >

[QR25DE]

P2138 APP SENSOR

NG

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

10.

CHECK APP SENSOR

Refer to 

EC-432, "Component Inspection"

.

OK or NG

OK

>> GO TO 12.

NG

>> GO TO 11.

11.

REPLACE ACCELERATOR PEDAL ASSEMBLY

1. Replace accelerator pedal assembly. Refer to 

ACC-3, "Component"

.

2. Perform 

EC-123, "Accelerator Pedal Released Position Learning"

.

3. Perform 

EC-123, "Throttle Valve Closed Position Learning"

.

4. Perform 

EC-124, "Idle Air Volume Learning"

.

>> INSPECTION END

12.

CHECK INTERMITTENT INCIDENT

Refer to 

GI-42, "Intermittent Incident"

.

>> INSPECTION END

Component Inspection

INFOID:0000000009481141

ACCELERATOR PEDAL POSITION SENSOR

1. Reconnect all harness connectors disconnected.
2. Turn ignition switch ON.
3. Check voltage between ECM terminals 81 (APP sensor 1 signal), 82 (APP sensor 2 signal) and ground

under the following conditions.

4. If NG, replace accelerator pedal assembly and go to the next step.
5. Perform 

EC-123, "Accelerator Pedal Released Position Learning"

.

6. Perform 

EC-123, "Throttle Valve Closed Position Learning"

.

7. Perform 

EC-124, "Idle Air Volume Learning"

.

Terminal

Accelerator pedal

Voltage

81
(Accelerator pedal position 
sensor 1)

Fully released

 0.6 - 0.95V

Fully depressed

Less than 4.75V

82
(Accelerator pedal position 
sensor 2)

Fully released

0.3 - 0.45V

Fully depressed

Less than 2.4V

BRAKE PEDAL POSITION SWITCH

EC-433

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BRAKE PEDAL POSITION SWITCH

Component Description

INFOID:0000000009481142

When depress on the brake pedal, brake pedal position switch is turned OFF and stop lamp switch is turned

ON. ECM detects the state of the brake pedal by this those two types of input (ON/OFF signal)

Refer to 

CCS-3

 for the ASCD function.

Diagnosis Procedure

INFOID:0000000009481143

A/T MODELS

1.

CHECK OVERALL FUNCTION-I

 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 voltage between ECM terminal 110 and ground under the following conditions.

OK or NG

OK

>> INSPECTION END.

NG

>> GO TO 2.

2.

CHECK BRAKE PEDAL POSITION SWITCH POWER SUPPLY CIRCUIT

1. Turn ignition switch OFF.

2. Disconnect brake pedal position switch harness connector.

3. Turn ignition switch ON.

4. Check voltage between brake pedal position switch terminal 1

and ground with CONSULT or tester.

OK or NG

OK

>> GO TO 4.

NG

>> GO TO 3.

3.

DETECT MALFUNCTIONING PART

Check the following.

• Fuse block (J/B) connector E160

• 10A fuse (No.12)

• Harness for open or short between brake pedal position switch and fuse

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

CONDITION

INDICATION

Brake pedal: Slightly depressed

OFF

Brake pedal: Fully released

ON

CONDITION

VOLTAGE

Brake pedal: Slightly depressed

Approximately 0V

Brake pedal: Fully released

Battery voltage

Voltage: Battery voltage

PBIB0857E

EC-434

< DTC/CIRCUIT DIAGNOSIS >

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BRAKE PEDAL POSITION SWITCH

4.

CHECK BRAKE PEDAL POSITION SWITCH INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT

1. Turn ignition switch OFF.

2. Disconnect ECM harness connector.

3. Check harness continuity between ECM terminal 110 and brake pedal position switch terminal 2.

Refer to Wiring Diagram.

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

OK

>> GO TO 5.

NG

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

5.

CHECK BRAKE PEDAL POSITION SWITCH

Refer to 

EC-436, "Component Inspection"

.

OK or NG

OK

>> GO TO 6.

NG

>> Replace brake pedal position switch. Refer to 

BR-20, "Exploded View"

.

6.

CHECK INTERMITTENT INCIDENT

Refer to 

GI-42, "Intermittent Incident"

.

>> INSPECTION END

M/T MODELS

1.

CHECK OVERALL FUNCTION-I

 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 voltage between ECM terminal 110 and ground under the following conditions.

OK or NG

OK

>> INSPECTION END.

NG

>> GO TO 2.

2.

CHECK BRAKE PEDAL POSITION SWITCH CIRCUIT

1. Turn ignition switch OFF.

2. Disconnect clutch pedal position switch harness connector.

3. Turn ignition switch ON.

Continuity should exist.

CONDITION

INDICATION

Brake pedal and/or clutch pedal: Slightly depressed

OFF

Brake pedal and clutch pedal: Fully released

ON

CONDITION

VOLTAGE

Brake pedal and/or clutch pedal: Slightly depressed

Approximately 0V

Brake pedal and clutch pedal: Fully released

Battery voltage