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PARKING BRAKE DIAGNOSIS TSB Revision PARKING BRAKES 36-5 TECHNICAL DESCRIPTION (COMMENT) The parking brake switch turns on and off by operat- . TROUBLESHOOTING HINTS (THE MOST • Damaged wiring harness or connector • Parking brake switch defective • Combination meter defective . DIAGNOSIS Required Special Tools: • MB991958: Scan Tool (M.U.T.-III Sub Assembly) • MB991824: Vehicle Communication Interface (V.C.I.) • MB991827: M.U.T.-III USB Cable • MB991910: M.U.T.-III Main Harness A STEP 1. Using scan tool MB991958, check combination AC608435 Data link connector MB991827 MB991824 MB991910 AB CAUTION To prevent damage to scan tool MB991958, always turn the "OFF" position. (4) Set scan tool MB991958 to the actuator test mode. • Item 13: Indicator lamp 4: ON • The brake warning light illuminates. • Item 13: Indicator lamp 4: OFF • The brake warning light goes out. (5) Turn the ignition switch to the "LOCK" (OFF) position. YES : Go to Step 2. 54A, Combination meter assembly STEP 2. Check the parking brake switch. . Q: Is the parking brake switch normal? YES : Go to Step 3. |