Nissan Pathfinder: Parking Brake System - Dtc/circuit Diagnosis

• Parking Brake Switch
• Electric Parking Brake Indicator Lamp
• Electric Parking Brake Warning Lamp

Parking Brake Switch Nissan Pathfinder 5th Gen

Component Inspection

CHECK PARKING BRAKE SWITCH

1. Disconnect the 12V battery negative terminal.

2. Disconnect the parking brake switch harness connector.

3. Check the continuity when parking brake switch is operated.

   Parking brake switch			Continuity
   Condition	Terminals
   When parking brake switch is neutral	3	5	Yes
   	6	7	Yes
   	3	6	No
   	5	7	No
   When parking brake switch is pulled	3	5	Yes
   	5	7	Yes
   	3	6	No
   	6	7	No
   When parking brake switch is pushed	3	6	Yes
   	6	7	Yes
   	3	5	No
   	5	7	No

Is the inspection result normal?

YES>>

GO TO 2.

NO>>

Replace the parking brake switch. Refer to Removal and Installation.

CHECK PARKING BRAKE SWITCH INDICATOR

Apply 12 V between parking brake switch connector terminals, and check the parking brake switch indicator lamp.

CAUTION:

• Connect fuse between terminals when applying the voltage.

• Never make the terminals short.

Parking brake switch		Condition	Parking brake switch indicator
Terminals
(+)	(—)
2	9	Apply 12 V between parking brake switch connector terminals (2 and 9).	ON

Is the inspection result normal?

YES>>

Inspection End.

NO>>

Replace the parking brake switch. Refer to Removal and Installation.

Electric Parking Brake Indicator Lamp Nissan Pathfinder SUV

Component Function Check

CHECK ELECTRIC PARKING BRAKE WARNING LAMP FUNCTION

Check that electric parking brake warning lamp in combination meter turns ON for approximately 1 second after ignition switch is ON.

Is the inspection result normal?

YES>>

GO TO 2.

NO>>

Refer to Diagnosis Procedure.

CHECK ELECTRIC PARKING BRAKE INDICATOR LAMP FUNCTION

Check that electric parking brake indicator lamp in combination meter turns ON/OFF when parking brake is operated.

NOTE:

Electric parking brake indicator lamp turns ON when parking brake is operated (when parking brake switch is pulled).

Is the inspection result normal?

YES>>

Inspection End.

NO>>

Refer to Diagnosis Procedure.

Diagnosis Procedure

CHECK ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT) POWER SUPPLY AND GROUND CIRCUIT

Perform the trouble diagnosis for ABS actuator and electric unit (control unit) power supply and ground circuit. Refer to Diagnosis Procedure.

Is the inspection result normal?

YES>>

GO TO 2.

NO>>

Repair / replace harness, connector, terminal, fuse, or fusible link.

PERFORM SELF DIAGNOSTIC RESULT

CONSULT

1. Ignition switch OFF.

   CAUTION:

   Be sure to wait for 10 seconds or more after the ignition switch OFF.

2. Operate and release the parking brake five times.

3. Select "Self Diagnosis Result" mode of “ABS”.

Is DTC detected?

YES>>

Check the DTC. Refer to DTC Index.

NO>>

GO TO 3.

CHECK COMBINATION METER

Check the combination meter.

• Full TFT meter: Refer to On Board Diagnosis Function.

• 7 inch information display meter: Refer to On Board Diagnosis Function.

Is inspection result normal?

YES>>

Replace the ABS actuator and electric unit (control unit). Refer to Removal and Installation.

NO>>

Repair / replace the combination meter.

• Full TFT meter: Refer to Removal and Installation.

• 7 inch information display meter: Refer to Removal and Installation.

Electric Parking Brake Warning Lamp Nissan Pathfinder SUV

Component Function Check

CHECK ELECTRIC PARKING BRAKE WARNING LAMP FUNCTION

Check that electric parking brake warning lamp in combination meter turns ON for approximately 1 second after ignition switch is ON.

Is the inspection result normal?

YES>>

GO TO 2.

NO>>

Refer to Diagnosis Procedure.

CHECK ELECTRIC PARKING BRAKE INDICATOR LAMP FUNCTION

Check that electric parking brake indicator lamp in combination meter turns ON/OFF when parking brake is operated.

NOTE:

Electric parking brake indicator lamp turns ON when parking brake is operated (when parking brake switch is pulled).

Is the inspection result normal?

YES>>

Inspection End.

NO>>

Refer to Diagnosis Procedure.

Diagnosis Procedure

CHECK ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT) POWER SUPPLY AND GROUND CIRCUIT

Perform the trouble diagnosis for ABS actuator and electric unit (control unit) power supply and ground circuit. Refer to Diagnosis Procedure.

Is the inspection result normal?

YES>>

GO TO 2.

NO>>

Repair / replace harness, connector, terminal or fuse.

PERFORM SELF DIAGNOSTIC RESULT

CONSULT

Select "Self Diagnostic Result" mode of “ABS”.

Is DTC detected?

YES>>

Check the DTC. Refer to DTC Index.

NO>>

GO TO 3.

CHECK COMBINATION METER

Use the on board diagnostic function of the combination meter to the electric parking brake warning lamp turns ON.

• Full TFT meter: Refer to On Board Diagnosis Function.

• 7 inch information display meter: Refer to On Board Diagnosis Function.

Is the inspection result normal?

YES>>

Replace the ABS actuator and electric unit (control unit). Refer to Removal and Installation.

NO>>

Repair / replace the combination meter.

• Full TFT meter: Refer to Removal and Installation.

• 7 inch information display meter: Refer to Removal and Installation.