Diagnosis Procedure

1. Turn ignition switch ON.
2. Connect CONSULT and check for "ENGINE" diagnostic trouble codes.
3. Check for current DTCs on the CONSULT screen.

ABS and/or ESC warning lamp/s on or vehicle speed DTCs current?

YES

Refer to DTC Index .

NO

GO TO 2 .

1. The diagnostic is designed to detect a faulty brake switch.
2. Diagnostic runs when vehicle speed is above 48 km/h (30 mph) for more than five minutes.
3. Fault code will set when vehicle speed is detected at 3 km/h (2 mph) or less without brake activity.

Does customer coast to a near stop without using the service brake?

YES

Explain the diagnostic operation to the customer. Repair Complete.

NO

GO TO 3 .

1. Turn ignition switch ON.
2. Select "BRAKE SW1" in "DATA MONITOR" mode of "ENGINE" using CONSULT.
3. Check "BRAKE SW1" indication as per the following conditions.

   Monitor item	Condition		Indication
   BRAKE SW1	Brake pedal	Slightly depressed	OFF
   		Fully released	ON

Brake switch status changing correctly?

YES

Inspection End.

NO

GO TO 4 .

1. Turn ignition switch OFF.
2. Disconnect the brake switch from the harness.
3. Inspect the harness and module connector pins for the following:
   • Loose connector
   • Corroded pins
   • Bent or broken pins
   • Pushed back or expanded pins
   • Moisture in or on the connector
   • Missing or damaged connector seals
   • Dirt or debris on or in the connector pins
   • Connector shell broken
   • Wire insulation damage
   • Damaged connector locking tab

Is the inspection result normal?

YES

Replace the brake switch. Refer to Exploded View .

NO

Repair or replace error-detected parts.