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SWS DIAGNOSIS TSB Revision SIMPLIFIED WIRING SYSTEM (SWS) 54B-167 STEP 1. Check the ETACS-ECU power supply circuit. • Ignition key reminder tone alarm function • Light reminder tone alarm function • Central door locking system • Hazard warning light • Interior light dimming function Q: Do any of the functions work? YES : Go to Step 2. Inspection Procedure O-1 ( STEP 2. Check the "SECURITY" indicator circuit at the at the harness side. (2)Connect terminal 39 to the ground. Q: Does the "SECURITY" indicator light illuminate? YES : Go to Step 10 <when using scan tool MB991502> or 11 <when using a voltmeter>. NO : Go to Step 3. STEP 3. Check the "SECURITY" indicator light bulb. condition? illuminate, and the theft-alarm system should be 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 AC002146 AC CONNECTOR C-81 AC003180 AD SECURITY INDICATOR LIGHT |