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STEERING WHEEL AUDIO REMOTE CONTROL SWITCH TSB Revision CHASSIS ELECTRICAL 54A-569 . TECHNICAL DESCRIPTION (COMMENT) The power supply circuit to the steering wheel audio . TROUBLESHOOTING HINTS • Malfunction of steering wheel audio remote con- trol switch • Malfunctions of multivision display • Malfunction of the clock spring • Damaged harness wires and connectors DIAGNOSIS Required Special Tools: • MB991223: Harness Set • MB992006: Extra Fine Probe STEP 1. Check the remote controlled radio switch. Q: Is the remote controlled radio switch in good condition? YES : Go to Step 2. switch. AC709494 AG Connectors: C-07, C-17 C-07 (GR) C-17 AC900844 Connectors: C-202, C-204, C-213 AW C-213 (R) C-202 C-204 Switch Position Tester Connection Measurement Value No push 2 − 4 Approximately 71 k Ω Mode Approximately 270 Ω CH up Approximately 740 Ω CH down Approximately 1.3 k Ω VOL up Approximately 2.1 k Ω VOL down Approximately 3.1 k Ω AC703778 AB “VOL up” switch “CH up” “CH down” “VOL down” “Mode” switch AC703779 AB |