Cruise Control - Inoperative/Malfunctioning

CRUISE CONTROL INOPERATIVE/MALFUNCTIONING

DIAGNOSTIC AIDS

IMPORTANT: Perform the following in order to avoid misdiagnosis.
- Inspect for proper operation of brake lamps.
- Inspect throttle linkage for mechanical binding which could cause the system to malfunction.
- Inspect cruise control cable adjustment, should have minimum slack.
- Inspect for stored Diagnostic Trouble Codes (DTCs) in the PCM. Refer to Diagnostic System Check - Computers and Control Systems in Computers and Control Systems. Initial Inspection and Diagnostic Overview
- When testing vehicles equipped with steering wheel controls, the steering wheel must be rotated to each stop position while testing the cruise control switch signal circuits. This will assure the integrity of the (SIR) coil.

CONDITIONS FOR ENABLING CRUISE CONTROL
- When vehicle speed is more than 40 km/h (25 mph)
- When PARK, REVERSE, NEUTRAL, or 1st gear is not indicated
- When an over/undercharged battery condition does not exist
- With normal engine RPM

TEST

Steps 1-4:

Steps 5-12:

Steps 13-18:

Steps 19-25:

Steps 26-31:

Steps 32-38:

Steps 39-43: