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SYMPTOM PROCEDURES SIMPLIFIED WIRING SYSTEM (SWS) 54B-401 STEP 4. Check the input signal by using "DATA LIST" • Ignition switch: ON (1) Operate diagnostic tool MB991958 according to the procedure below to display "ETACS ECU." Select "ETACS ECU." (2) Check that normal conditions are displayed for the items described in the table below. Q: Is the diagnostic tool MB991958 display the items "IG SW (IG1)" normal condition? does not receive any signal from the ignition switch ." STEP 5. Replace the combination meter. Q: Is the seat belt warning lamp in good condition? YES : No action is necessary and testing is complete. warning lamp illuminates normally. ITEM NO. ITEM NAME NORMAL CONDITION ITEM 30 IG SW (IG1) ON 00DB076A MB991910 DATA LINK CONNECTOR MB991824 MB991827 AC302210 COLUMN SWITCH COLUMN SWITCH MB991812 AB |