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STEERING WHEEL AUDIO REMOTE CONTROL SWITCH TSB Revision CHASSIS ELECTRICAL 54A-565 . 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 radio and CD player • Malfunction of the clock spring • Damaged harness wires and connectors DIAGNOSIS Required Special Tools: • MB991223: Harness Set • MB992006: Extra Fine Probe • 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 data list. control. Check whether the normal conditions listed below OK: Normal condition is displayed. Q: Is the check result normal? YES : Replace the radio and CD player. AC703148 AG Connector: C-16 AC900844 Connectors: C-202, C-204, C-213 AW C-213 (R) C-202 C-204 Item No. Item name Normal Item 1 RADIO remote SW (SEEK-) ON Item 2 RADIO remote SW (SEEK+) ON Item 3 RADIO remote SW (MODE) ON Item 4 RADIO remote SW (VOL-) ON Item 5 RADIO remote SW (VOL+) ON |