PR25DD engine

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
   E51	1	Ground	Battery voltage

Is the inspection result normal?

YES

GO TO 3.

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.

Is the inspection result normal?

YES

Perform the trouble diagnosis for power supply circuit.

NO

Repair or replace error-detected parts.

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.

   +		+		Continuity
   Brake pedal position switch		ECM
   Connector	Terminal	Connector	Terminal
   E51	2	E31	150	Existed

4. Also check harness for short to ground and 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.

Check brake pedal position switch. Refer to Component Inspection .

Is the inspection result normal?

YES

Check intermittent incident. Refer to Intermittent Incident .

NO

Replace brake pedal position switch. Refer to Exploded View .