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MMCS TSB Revision CHASSIS ELECTRICAL 54A-397 STEP 2. Using scan tool MB991958, read the occupant YES : Troubleshoot the SRS (Refer to GROUP 52B, ). NO : Go to Step 3. STEP 3. Recheck for diagnostic trouble code. position. (3) Check if DTC is set. YES : Replace the CAN box unit. to GROUP 00, How to use − How to Cope with Intermittent Malfunction DTC U0155: Meter CAN timeout CAUTION • If DTC U0155 is set, be sure to diagnose the CAN bus line. • When replacing the ECU, always check that the communication circuit is normal. (Check . DIAGNOSTIC FUNCTION When the signals from combination meter cannot be . JUDGMENT CRITERIA With the ignition switch in the ON position, system − 16 volts (data from ETACS-ECU), power supply fuse is OK, or odometer . TROUBLESHOOTING HINTS • The CAN bus line may be defective. • The CAN box unit may be defective. • The combination meter may be defective. DIAGNOSIS Required Special Tools: • MB991958 Scan Tool (M.U.T.-III Sub Assembly) • MB991824: V.C.I. • MB991827 M.U.T.-III USB Cable • MB991910 M.U.T.-III Main Harness A |