Diagnostic Test
CHECK FOR AN ACTIVE DTC
- Turn the ignition on.
- With the scan tool, read DTCs.
Are there any other modules reporting voltage high DTCs?
Yes
- Diagnose and repair the overcharging condition in the charging system.
- Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .
No
- Perform the INTERMITTENT CONDITION diagnostic procedure. Refer to INTERMITTENT CONDITION .