Content .. 689 690 691 692 ..

Nissan Frontier. Manual - part 691

P2138 APP SENSOR

EC-1335

< DTC/CIRCUIT DIAGNOSIS >

[VQ40DE FOR MEXICO]

2. Disconnect ECM harness connector.

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

Refer to wiring diagram.

OK or NG

>> GO TO 5.

>> Repair open circuit.

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

>> GO TO 6.

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

CHECK THROTTLE POSITION SENSOR

Refer to

EC-1185, "Component Inspection"

OK or NG

>> GO TO 12.

>> GO TO 7.

REPLACE ELECTRIC THROTTLE CONTROL ACTUATOR

1. Replace electric throttle control actuator. Refer to

EM-142, "Exploded View"

2. Perform

EC-1075, "Throttle Valve Closed Position Learning"

3. Perform

EC-1075, "Idle Air Volume Learning"

>> 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 APP sensor terminals 4 and ECM terminal 82, APP sensor terminal 5

and ECM terminal 83.

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.

Continuity should exist.

ECM terminal

Sensor terminal

APP sensor terminal 1

Electric throttle control actuator terminal 2

Continuity should exist.

EC-1336

< DTC/CIRCUIT DIAGNOSIS >

[VQ40DE FOR MEXICO]

P2138 APP SENSOR

10.

CHECK APP SENSOR

Refer to

EC-1336, "Component Inspection"

OK or NG

>> GO TO 12.

>> GO TO 11.

11.

REPLACE ACCELERATOR PEDAL ASSEMBLY

1. Replace accelerator pedal assembly. Refer to

ACC-3, "Component"

2. Perform

EC-1074, "Accelerator Pedal Released Position Learning"

3. Perform

EC-1075, "Throttle Valve Closed Position Learning"

4. Perform

EC-1075, "Idle Air Volume Learning"

>> INSPECTION END

12.

CHECK INTERMITTENT INCIDENT

Refer to

GI-42, "Intermittent Incident"

>> INSPECTION END

Component Inspection

INFOID:0000000009482016

ACCELERATOR PEDAL POSITION SENSOR

1. Reconnect all harness connectors disconnected.
2. Turn ignition switch ON.
3. Check voltage between ECM terminals 106 (APP sensor 1 sig-

nal), 98 (APP sensor 2 signal) and ground under the following

conditions.

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

EC-1074, "Accelerator Pedal Released Position Learning"

6. Perform

EC-1075, "Throttle Valve Closed Position Learning"

7. Perform

EC-1075, "Idle Air Volume Learning"

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

ASCD BRAKE SWITCH

EC-1337

< DTC/CIRCUIT DIAGNOSIS >

[VQ40DE FOR MEXICO]

ASCD BRAKE SWITCH

Component Description

INFOID:0000000009482021

When the brake pedal is depressed, brake pedal position switch is

turned OFF and stop lamp switch (2) is turned ON. ECM detects the

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

Refer to

EC-984, "System Description"

for the ASCD function.

Diagnosis Procedure

INFOID:0000000009482022

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 108 and ground under the

following conditions.

OK or NG

>> GO TO 2.

>> GO TO 3.

CHECK OVERALL FUNCTION-II

With CONSULT

Check “BRAKE SW2” indication in “DATA MONITOR” mode.

Without CONSULT

1: Brake pedal position switch

MBIB1214E

CONDITION

INDICATION

Brake pedal: Slightly depressed

OFF

Brake pedal: Fully released

CONDITION

VOLTAGE

Brake pedal: Slightly depressed

Approximately 0V

Brake pedal: Fully released

Battery voltage

MBIB0061E

CONDITION

INDICATION

Brake pedal: Fully released

OFF

Brake pedal: Slightly depressed

EC-1338

< DTC/CIRCUIT DIAGNOSIS >

[VQ40DE FOR MEXICO]

ASCD BRAKE SWITCH

Check voltage between ECM terminal 101 and ground under the fol-

lowing conditions.

OK or NG

>> INSPECTION END

>> GO TO 7.

CHECK BRAKE PEDAL POSITION SWITCH POWER SUPPLY CIRCUIT

1. Turn ignition switch OFF.

2. Disconnect brake pedal position switch (1) harness connector.

Stop lamp switch (2)

3. Turn ignition switch ON.

4. Check voltage between brake pedal position switch terminal 1

and ground with CONSULT or tester.

OK or NG

>> GO TO 5.

>> GO TO 4.

DETECT MALFUNCTIONING PART

Check the following.

• Fuse block (J/B) connector E160

• 10 A 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.

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 108 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

>> GO TO 6.

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

CONDITION

VOLTAGE

Brake pedal: Fully released

Approximately 0V

Brake pedal: Slightly depressed

Battery voltage

MBIB0060E

MBIB1214E

Voltage: Battery voltage

PBIB0857E

Continuity should exist.

Content .. 689 690 691 692 ..