Diagnosis Procedure

With CONSULT

1. Turn ignition switch ON.
2. Select "BRAKE SW 1" in "DATA MONITOR" mode of "ENGINE" with CONSULT.
3. Check "BRAKE SW 1" indication as per the following conditions.

   Monitor item	Condition		Indication
   BRAKE SW 1	Brake pedal	Slightly depressed	OFF
   		Fully released	ON

Without CONSULT

1. Turn ignition switch ON.
2. Check the voltage between ECM harness connector terminals as per the following.

   ECM			Condition		Voltage (Approx.)
   Connector	+	-
   	Terminal
   E16	150	162	Brake pedal	Slightly depressed	0 V
   				Fully released	Battery voltage

Is the inspection result normal?

>>

Check intermittent incident. Refer to Intermittent Incident .

>>

GO TO 2.

1. Turn ignition switch ON.
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
   E84	1	Ground	Battery voltage

Is the inspection result normal?

>>

GO TO 3.

>>

Perform trouble diagnosis for power supply circuit.

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

   Brake pedal position switch		ECM		Continuity
   Connector	Terminal	Connector	Terminal
   E84	2	E16	150	Existed

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

Is the inspection result normal?

>>

GO TO 4.

>>

Repair or replace malfunctioning part.

Check brake pedal position switch. Refer to Component Inspection .

Is the inspection result normal?

>>

Check intermittent incident. Refer to Intermittent Incident .

>>

Replace brake pedal position switch. Refer to Removal and Installation .