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SUNROOF TSB Revision BODY 42A-175 INSPECTION PROCEDURE 6: The Sunroof Timer Function does not work. CAUTION Before replacing the ECU, ensure that the power . CIRCUIT OPERATION • The sunroof timer function works according to the signals from the following switches: • Ignition switch (IG1): OFF • Front door switch (LH): OFF • Front door switch (RH): OFF • Vehicle condition • Ignition switch: LOCK (OFF) position • Front door (LH): Closed • Front door (RH): Closed • When the driver’s door or the passenger’s door are opened and closed while the sunroof timer . TECHNICAL DESCRIPTION (COMMENT) Is the sunroof timer function does not work normally, . TROUBLESHOOTING HINTS • The front door switch may be defective • The sunroof motor assembly may be defective • The wiring harness or connectors may have loose, corroded, or damaged terminals, or termi- DIAGNOSTIC PROCEDURE 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 STEP 1. Check the power supply system. • Hazard warning light • Central door locking system Q: Is the check result normal? YES : Go to Step 2. − Malfunction of ETACS-ECU power supply circuit |