Engine Control Module: Testing and Inspection

ENGINE CONTROL MODULE FUNCTIONAL CHECK
1. Turn ignition switch to "ON."
2. Insert a spare fuse into the DIAG SW in the junction block.
^ Diagnostic Trouble Code (DTC) 12 should be flashing. If DTC 12 is not flashing, go to System Diagnosis / Flow of Diagnosis and perform the On-Board Diagnostic System Check. Testing and Inspection