Diagnostic Test
- 1) CHECK FOR ACTIVE DTC AND DETERMINE FCM CONFIGURATION
With the scan tool, read the active DTC's.
Cycle the ignition switch from off to on at least 5 times, leaving the ignition on for a minimum of 90 seconds per cycle.
With the scan tool, read the active DTC's.
Does the scan tool display this DTC as active?
Yes
- With the scan tool enter program network configuration and program the FCM to the vehicle configuration, erase DTC's and retest.
No
- If the DTC is stored, check for an intermittent condition. Visually inspect the related wiring harness connectors. Look for broken, bent, pushed out, or corroded terminals. Erase the stored DTCs.