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DTC U0168: KOS-ECU or WCM CAN timeout M15410100058USA0000010000 ⦆ If DTC U0168 is set, be sure to diagnose the CAN ⦆ When replacing the ECU, always check that the DIAGNOSTIC FUNCTION JUDGMENT CRITERIA power supply fuse is OK, or odometer value is 80.5 TROUBLESHOOTING HINTS ⦆ Malfunction of CAN bus line may be defective. ⦆ Malfunction of the KOS-ECU may be defective. ⦆ Malfunction of the WCM may be defective. ⦆ Malfunction of combination meter may be defective. DIAGNOSIS Required Special Tools: ⦆ 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 STEP 1. Using scan tool MB991958, diagnose the CAN bus ZC501967 AC404789 ZC5019680000 MB991824 MB991827 MB991910 Data link connector To prevent damage to scan tool MB991958, always turn the (1) Connect scan tool MB991958. Refer to "How to connect the (2) Turn the ignition switch to the "ON" position. (3) Diagnose the CAN bus line. (4) Turn the ignition switch to the "LOCK" (OFF) position. Q:Is the CAN bus line found to be normal? YES: Go to Step 2. NO: Repair the CAN bus line. (Refer to GROUP 54D, COMBINATION METER 54Ab-33 DIAGNOSIS |