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DIAGNOSIS TSB Revision WIRELESS CONTROL MODULE (WCM) 42C-57 DTC C1914, C1924, C1934, C1944 • The TPMS transmitter detects if the tire pressure sensor is normal and sends the signal to WCM. When the TPMS . TROUBLESHOOTING HINTS The most likely causes for this DTC to set are: • Low battery that is incorporated into the TPMS transmitter • Damaged wiring harness and connector • Registered IDs unmatched • Malfunction of TPMS transmitter • Malfunction of WCM 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 YES : Go to Step 3. − CAN Bus Diagnostics table ). On completion, go to Step 2. STEP 2. Diagnostic trouble code recheck after resetting C1934 or C1944 set? STEP 3. Check for TPMS transmitter. ). NOTE: The TPMS transmitter which cannot be checked may YES : Among the checked TPMS transmitters, replace the TPMS transmitters to which the DTC is set. Then ). Then go to Step 4. NO : Even when no transmitter is checked, register the ID .) Then go to Step 4. |