Inspection Procedure 2

INSPECTION PROCEDURE 2: When the Parking Brake Lever is Pulled, the Brake Warning Light does not Illuminate.













TECHNICAL DESCRIPTION (COMMENT)

The parking brake switch turns on and off by operating the parking brake lever, and the brake warning light illuminates and goes out, indicating the operating status of parking brake to a driver.

TROUBLESHOOTING HINTS (THE MOST LIKELY CAUSES FOR THIS CASE:)

- Damaged wiring harness or connector
- Parking brake switch defective
- Combination meter defective


DIAGNOSIS

STEP 1. Using scan tool MB991958, check combination meter actuator test.

Perform the following actuator test by the combination meter system, and check if the brake warning light illuminates Actuator Test Reference Table, Actuator Test Reference Table).

- Item No.07: Indicator 1

Q. Is the check result normal?

YES Go to Step 2.
NO Replace the combination meter Removal and Replacement).
STEP 2. Check the parking brake switch.

Refer to Testing and Inspection.

Q. Is the parking brake switch normal?

YES Go to Step 3.
NO Replace the parking brake switch (Refer to Removal and Replacement).
Then go to Step 6.
STEP 3. Connector check: D-36 parking brake switch connector, C-26 intermediate connector and C-203 combination meter connector

Q. Is the check result normal?

YES Go to Step 4.
NO Repair or replace the faulty connector Harness Connector Inspection). Then go to Step 6.
STEP 4. Check the wiring harness for an open circuit between D-36 parking brake switch connector terminal No.1 and C-203 combination meter connector terminal No.4.

(1)Disconnect D-36 parking brake switch connector from C-203 combination meter connector, and measure at the wiring harness side connector.

(2)Measure the resistance between D-36 parking brake switch connector terminal No.1 and C-203 combination meter connector terminal No.4.
OK: Continuity exists (2ohms or less)


Q. Is the check result normal?

YES Go to Step 5.
NO A open circuit may be present in the wiring harness between D-36 parking brake switch connector terminal No.1 and C-203 combination meter connector terminal No.4. Repair the wiring harness if necessary, and then go to Step 6.
STEP 5. Retest the system.

Q. Does the brake warning light illuminate when the parking brake lever is pull?

YES It can be assumed that this malfunction is intermittent How to Cope With Intermittent Malfunctions).
NO Replace the combination meter Removal and Replacement).
STEP 6. Retest the system.

Q. Does the brake warning light illuminate when the parking brake lever is pulled?

YES The procedure is complete.
NO Return to Step 1.