Nissan Pathfinder. Manual — part 528
EC-418
< DTC/CIRCUIT DIAGNOSIS >
[VQ35DE]
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
.
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 >
[VQ35DE]
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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
.
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
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
< DTC/CIRCUIT DIAGNOSIS >
[VQ35DE]
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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
.
2. Check that cooling fan operates.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Proceed to
.
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
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