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TPMS DTC SET CONDITION TROUBLESHOOTING HINTS ⦆ Low battery that is incorporated into the TPMS transmitter ⦆ Damaged wiring harness and connector ⦆ Malfunction of TPMS transmitter 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. M.U.T.-III CAN bus diagnostics Q:Is the check result normal? YES: Check the registered ID by the transmitter ID check function, and detect the wheel to which the DTC is set by NO: Repair the CAN bus lines. (Refer to GROUP 54D - CAN Bus Diagnostics table P.54D-17.) On completion, go to STEP 2. Diagnostic trouble code recheck after resetting (1) Turn the ignition switch to the "ON" position. (2) Check if the DTC is set. (3) Turn the ignition switch to the "LOCK" (OFF) position. Q:Is the diagnostic trouble code C1910, C1920, C1930 or C1940 set? YES: Start over at Step 1. NO: The procedure is complete. STEP 3. Recheck for diagnostic trouble code. (1) Turn the ignition switch to the "LOCK" (OFF) position. (2) Turn the ignition switch to the "ON" position. (3) Check if the DTC is set. (4) Turn the ignition switch to the "LOCK" (OFF) position. Q:Is the diagnostic trouble code C1910, C1920, C1930 or C1940 set? YES: Replace the KOS-ECU and register the ID codes. (refer to P.42B-12.) Then start over at Step 1. NO: The procedure is complete. KEYLESS OPERATION SYSTEM (KOS) 42B-83 DIAGNOSIS |