System Diagnostics

The self-diagnostic capabilities of this system, if properly utilized, can simplify testing. Cruise control system is monitored by Powertrain Control Module (PCM).

If a problem is sensed with a monitored circuit, a fault code is stored in PCM. Once codes are known, refer to FAULT CODES to determine questionable circuit. Test circuits, and repair or replace components as required. If problem is repaired or ceases to exist, PCM cancels that fault code after 50 ignition on/off cycles. To clear codes, refer to CLEARING FAULT CODES  .

A specific fault code results from a particular system failure, but is not necessarily reason for failure. Fault code does not condemn a specific component. Fault code calls out a probable malfunction area.