Component Tests and General Diagnostics

Communication Circuit Troubleshooting (A/T)

1. Start the engine.
2. Turn on the cruise control main switch, then drive the vehicle to speeds over 25 mph (40 km/h) with the cruise control.

Does the cruise control operate?

YES-Go to step 3.

NO-Check the cruise control unit or cruise control actuator.




3. Measure the voltage between the No.8 terminal of the cruise control unit connector and ground.

Is there approx. 1 V?

YES-Go to step 4.

NO-Replace the cruise control unit.




4. Measure the voltage between the A5 terminal of the PCM connector and ground.

Is there approx. 1 V?

YES-Check for loose connectors. If necessary replace the PCM and recheck.

NO-Repair short or open in the BLU/GRN wire between the A5 terminal and the cruise control unit.