Powertrain Control Module Inhibit
Powertrain Control Module (PCM) will inhibit cruise control if one or more of following has occurred:
- When park, reverse, neutral, or first gear is indicated.
- When certain Diagnostic Trouble Codes (DTC) are stored. See DIAGNOSTIC TROUBLE CODE DEFINITIONS .
- When an over/undercharged battery condition exists.
- With low engine RPM.
- With high engine RPM e.g. fuel cut off.