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IGNITION SWITCH TSB Revision CHASSIS ELECTRICAL 54A-17 STEP 2. Check the immobilizer-ECU power supply circuit backprobing. Q: Is the voltage approximately 12 volts (battery positive voltage)? STEP 3. Check immobilizer-ECU connector C-89 and MFI connector A-21X damaged? Harness Connector Inspection . Confirm that scan tool MB991502 communicates normally. NO : Go to Step 4. ACX01728 AE CONNECTOR: C-89 (HARNESS SIDE) AC003128 CONNECTOR: A-21X AO MFI RELAY BATTERY AC002877AB CONNECTOR: C-89 IMMOBILIZER-ECU |