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DIAGNOSIS TSB Revision KEYLESS OPERATION SYSTEM (KOS) 42B-135 . TROUBLESHOOTING HINTS • Configuration function setting • Damaged wiring harness and connectors • Malfunctions of the steering lock push switch • Malfunction of the keyless operation key • Malfunction of the receiver antenna module • Malfunction of KOS-ECU DIAGNOSIS Required Special Tools: • MB992006: Extra fine probe • MB991223: Harness set • MB991958: Scan Tool (M.U.T.-III Sub Assembly) • MB991824: Vehicles Communication Interface (V.C.I.) • MB991827: M.U.T.-III USB Cable • MB991910: M.U.T.-III Main Harness A (Vehicles with CAN communication system) STEP 1. Check the power supply circuit and the ground . Q: Is the power supply circuit and the ground circuit to KOS-ECU in good condition? to KOS-ECU. AC702145 C-102 C-30 AG Connectors: C-30, C-102 AC701632AG Connector: C-315 |