geo Workshop Repair Guides

Geo Workshop Service and Repair Manuals

Initial Inspection and Diagnostic Overview|Page 3220 > < Diagram Information and Instructions|Page 3217
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Engine Control Module: Initial Inspection and Diagnostic Overview

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. See: Testing and Inspection

Initial Inspection and Diagnostic Overview|Page 3220 > < Diagram Information and Instructions|Page 3217