Diagnosis Procedure

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.

   +		-	Voltage
   Brake pedal position switch
   Connector	Terminal
   E72	1	Ground	Battery voltage

Is the inspection result normal?

YES

GO TO 4.

NO

GO TO 2.

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.

   Brake pedal position switch		Fuse block (J/B)		Continuity
   Connector	Terminal	Connector	Terminal
   E72	1	E28	1M	Existed

4. Also check harness for short to power and short to ground.

Is the inspection result normal?

YES

GO TO 3.

NO

Repair or replace error-detected parts.

1. Disconnect 10A fuse (No. 30) from fuse block (J/B).
2. Check that 10A fuse is not blowing.

Is the fuse blown (open)?

YES

Replace the fuse after repairing the applicable circuit.

NO

Perform trouble diagnosis for power supply circuit.

1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Check the continuity between brake pedal position switch harness connector and ECM harness connector.

   Brake pedal position switch		ECM		Continuity
   Connector	Terminal	Connector	Terminal
   E72	2	E32	192	Existed

4. Also check harness for short to power and short to ground.

Is the inspection result normal?

YES

GO TO 5.

NO

Repair or replace error-detected parts.

Refer to Component Inspection (Brake Pedal Position Switch) 

Is the inspection result normal?

YES

Check intermittent incident. Refer to Intermittent Incident .

NO

Replace brake pedal position switch. Refer to Exploded View .