Cruise Control - Inoperative/Malfunctioning

CRUISE CONTROL INOPERATIVE/MALFUNCTIONING

DIAGNOSTIC AIDS
Perform the following in order to avoid a misdiagnosis:
- Inspect for proper operation of the brake lamps.
- EMI on the vehicle speed sensor signal circuit may cause erratic cruise control operation.

CONDITIONS FOR ENABLING CRUISE CONTROL
- The vehicle speed is greater than 40 km/h (25 mph).
- The vehicle is not in PARK, REVERSE, NEUTRAL or 1st gear.
- The system voltage is within 12 volts and 16 volts.

TEST DESCRIPTION

Steps 1-3:

Steps 4-7:

Steps 8-10:

Steps 11-16:

Steps 17-23:

Steps 24-28:

The numbers below refer to the step numbers on the diagnostic table.
8. This step tests the cruise control set/coast switch signal circuit for an open or for a high resistance.
9. This step tests the cruise control resume/accel switch signal circuit for an open or for a high resistance.
10. This step tests the ignition 3 voltage circuit for an open, for a short to ground or for a high resistance.
28. DTCs will set in the PCM when you perform this table.