Pinpoint Tests

PINPOINT TEST J: THE SPEED CONTROL IS INOPERATIVE

Normal Operation
The PCM sends a signal through circuit VES10 (WH) to the speed control switches, which passes through the clockspring. The return signal is sent through circuit RES08 (GN/BN) and the clockspring.

DTC P0579 (Cruise Control Multifunction Input A Circuit Range/Performance) - may set when the speed control switch circuits are open, shorted to voltage or shorted to ground.

DTC P0581 (Cruise Control Multifunction Circuit High) - sets when the speed control switch circuits are shorted to voltage or open.

This pinpoint test is intended to diagnose the following:
- Fuse
- Wiring, terminals or connectors
- PCM not configured for speed control
- Clockspring
- PCM
- Speed control switch

J1-J4:

J4-J5:

J6-J9:

J9-J10:

J11-J12:

J13-J15: