Test Notes

Enter this pinpoint test only when directed here from the symptom flowcharts.

If the SCCS fails the switch test or vehicle speed is not being received by the PCM, the speed control will not operate.

This pinpoint test is intended to diagnose only the following:
- harness circuits: Speed Control Command Switch (SCCS)
- speed control switches
- Powertrain Control Module (PCM)

Description
The speed control function is integrated in the PCM. The speed control command switches are momentary switches which are located on the face of the steering wheel. They consist of one ON-OFF toggle switch and one three position SET/ACCEL-COAST-RESUME switch. These switches, when depressed, select one of several resistance values to the PCM to select speed control functions. After pressing trigger, wait at least five seconds to depress accelerator pedal.

DTC Descriptions
P0565 = Speed control ON. Not pressed - KOER Switch Test.
P0566 = Speed control OFF. Not pressed - KOER Switch Test.
P0567 = Speed control RESUME. Not pressed - KOER Switch Test.
P0568 = Speed control SET. Not pressed - KOER Switch Test.
P0569 = Speed control COAST. Not pressed - KOER Switch Test.