Cruise Control Inoperative/Malfunctioning

Cruise Control Inoperative/Malfunctioning

Diagnostic Aids

* In order to avoid a misdiagnosis, inspect for proper operation of the brake lamps. Refer to Exterior Lighting Systems Description and Operation.
* For an intermittent condition, Refer to Testing for Intermittent Conditions and Poor Connections in Diagnostic Aids. Component Tests and General Diagnostics
* Electromagnetic Interference on the vehicle speed sensor signal circuit may cause erratic cruise control operation.

Conditions for Enabling Cruise Control

* The CRUISE NOT READY message is not illuminated in the DIC.
* 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 9.2 volts and 16 volts.
* The park brake is released.
* The forward looking sensor (FLS) is radiating and the adaptive cruise module (ACM) has identified acceptable stationary or moving objects.

Test Description

Step 1 - Step 11:

Step 12 - Step 14:

The number below refers to the step number on the diagnostic table.
5. This step tests the cruise control switch supply voltage circuit for an open, for a short to ground, or for a high resistance.