Nissan Pathfinder. Instruction - part 528

EC-418

< DTC/CIRCUIT DIAGNOSIS >

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ASCD INDICATOR

ASCD INDICATOR

Component Function Check

INFOID:0000000009178345

1.

CHECK ASCD INDICATOR FUNCTION

Check ASCD indicator under the following conditions.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Proceed to 

EC-419, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000009178346

1.

CHECK DTC

Check that DTC UXXXX is not displayed.
Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Perform trouble diagnosis for DTC UXXXX.

2.

CHECK COMBINATION METER FUNCTION

Check combination meter function. Refer to 

MWI-19, "CONSULT Function (METER/M&A)"

.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair or replace malfunctioning part.

3.

CHECK INTERMITTENT INCIDENT

Check intermittent incident. Refer to 

GI-49, "Intermittent Incident"

.

Is the inspection result normal?

YES

>> Replace combination meter. Refer to 

MWI-82, "Removal and Installation"

.

NO

>> Repair or replace error-detected parts.

ASCD INDICATOR

CONDITION

SPECIFICATION

CRUISE

• Ignition switch: ON

• MAIN switch: Pressed at the 

1st time 

→at the 2nd time

ON 

→ OFF

BRAKE PEDAL POSITION SWITCH

EC-419

< DTC/CIRCUIT DIAGNOSIS >

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BRAKE PEDAL POSITION SWITCH

Component Function Check

INFOID:0000000009178347

1.

CHECK BRAKE PEDAL POSITION 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

>> Proceed to 

EC-420, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000009178348

1.

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 the voltage between brake pedal position switch harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> GO TO 2.

2.

CHECK BRAKE PEDAL POSITION SWITCH POWER SUPPLY CIRCUIT

1. Turn ignition switch OFF.

2. Disconnect fuse block (J/B) harness connector.

3. Check the continuity between brake pedal position switch harness connector and fuse block (J/B) harness

connector.

Is the inspection result normal?

YES

>> Perform the trouble diagnosis for power supply circuit.

Monitor item

Condition

Indication

BRAKE SW1

Brake pedal

Slightly depressed

OFF

Fully released

ON

ECM

Condition

Voltage

Connector

+

–

Terminal

E16

126

128

Brake pedal

Slightly depressed

Approx. 0 V

Fully released

Battery voltage

Brake pedal position switch

Ground

Voltage

Connector

Terminal

E76

1

Ground

Battery voltage

Brake pedal position switch

Fuse block (J/B)

Continuity

Connector

Terminal

Connector

Terminal

E76

1

E28

1M

Existed

EC-420

< DTC/CIRCUIT DIAGNOSIS >

[VQ35DE]

BRAKE PEDAL POSITION SWITCH

NO

>> Repair or replace error-detected parts.

3.

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

1. Turn ignition switch OFF.

2. Disconnect ECM harness connector.

3. Check the continuity between brake pedal position switch harness connector and ECM harness connec-

tor.

4. 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 BRAKE PEDAL POSITION SWITCH

Check brake pedal position switch. Refer to 

EC-421, "Component Inspection (Brake Pedal Position Switch)"

.

Is the inspection result normal?

YES

>> Check intermittent incident. Refer to 

GI-49, "Intermittent Incident"

.

NO

>> Replace brake pedal position switch. Refer to 

BR-20, "Removal and Installation"

.

Component Inspection (Brake Pedal Position Switch)

INFOID:0000000009178349

1.

CHECK BRAKE PEDAL POSITION SWITCH-I

1. Turn ignition switch OFF.

2. Disconnect BRAKE pedal position switch harness connector.

3. Check the continuity between BRAKE pedal position switch terminals under the following conditions.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> GO TO 2.

2.

CHECK BRAKE PEDAL POSITION SWITCH-II

1. Adjust BRAKE pedal position switch installation. Refer to 

BR-15, "Adjustment"

.

2. Check the continuity between BRAKE pedal position switch terminals under the following conditions.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace BRAKE pedal position switch. Refer to 

BR-20, "Removal and Installation"

.

Brake pedal position switch

ECM

Continuity

Connector

Terminal

Connector

Terminal

E76

2

E16

126

Existed

Terminals

Condition

Continuity

1 and 2

Brake pedal

Fully released

Existed

Slightly depressed

Not existed

Terminals

Condition

Continuity

1 and 2

Brake pedal

Fully released

Existed

Slightly depressed

Not existed

COOLING FAN

EC-421

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COOLING FAN

Component Function Check

INFOID:0000000009178350

1.

CHECK COOLING FAN FUNCTION

With CONSULT

1. Turn ignition switch ON.

2. Perform “FAN DUTY CONTROL” in “ACTIVE TEST” mode of “ENGINE” using CONSULT.

3. Check that cooling fan speed varies according to the percentage.

Without CONSULT

1. Activate IPDM E/R auto active test and check cooling fan motors operation. Refer to 

PCS-8, "Diagnosis

Description"

.

2. Check that cooling fan operates.
Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Proceed to 

EC-422, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000009178351

1.

CHECK COOLING FAN CONTROL MODULE POWER SUPPLY

1. Turn ignition switch OFF.

2. Disconnect cooling fan control nodule harness connector.

3. Turn ignition switch ON.

4. Check the voltage between cooling fan control nodule harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> GO TO 2.

2.

CHECK COOLING FAN CONTROL MODULE POWER SUPPLY CIRCUIT

1. Turn ignition switch OFF.

2. Disconnect cooling fan relay harness connector.

3. Check the continuity between cooling fan control nodule harness connector and cooling fan relay harness

connector.

4. Also check harness for short to ground.
Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair or replace error-detected parts.

3.

CHECK COOLING FAN RELAY POWER SUPPLY CIRCUIT

1. Disconnect IPDM E/R harness connector.

2. Check the continuity between cooling fan relay harness connector and IPDM E/R harness connector.

+

−

Voltage

Cooling fan control module

Connector

Terminal

E225

3

Ground

Battery voltage

+

−

Continuity

Cooling fan control module

Cooling fan relay

Connector

Terminal

Connector

Terminal

E225

3

E82

5

Existed