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INPUT SIGNAL PROCEDURES TSB Revision SIMPLIFIED WIRING SYSTEM (SWS) 54B-567 DIAGNOSIS Required Special Tool: • MB991223: Harness Set STEP 1. Check ETACS-ECU connector C-219 for loose, Q: Is ETACS-ECU connector C-219 in good condition? YES : Go to Step 2. to GROUP 00E, Harness Connector Inspection . If the functions or equipment described in "CIRCUIT OPERATION" work normally, the interior STEP 2. Check the battery line of power supply circuit to (1) Disconnect ETACS-ECU connector C-219 and measure the voltage available at the junction block side of the connector. (2) Measure the voltage between terminal 20 and ground. • The voltage should measure approximately 12 volts (battery positive voltage). Q: Is the measured voltage approximately 12 volts (battery positive voltage)? AC305413 AG CONNECTOR: C-219 JUNCTION BLOCK SIDE JUNCTION BLOCK (REAR VIEW) AC305413 AG CONNECTOR: C-219 JUNCTION BLOCK SIDE JUNCTION BLOCK (REAR VIEW) AC209836 2019 18 1716 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 AE CONNECTOR C-219 |