Pinpoint Test R: The Speed Control Indicator Is Never/Always On: Testing

WARNING: This page is about a different car, the 2005 Mercury Montego, 2005 Ford Freestyle, and 2005 Ford Five Hundred. However, it is still accessible from the selected car via links, so may be relevant.

R1 CHECK THE SPEED CONTROL OPERATION
- Test drive the vehicle and operate the speed control.
- Does the speed control operate correctly?
- Yes : GO to R2.
- No : REFER to SPEED CONTROL to continue diagnosis of the speed control system.
R2 CARRY OUT THE INSTRUMENT CLUSTER SPEED CONTROL ACTIVE COMMAND USING THE DIAGNOSTIC TOOL
- Enter the following diagnostic mode on the scan tool: Instrument Cluster Active Command.
- Select the instrument cluster warning lamps and chime active command. Trigger the all lamps active command on and off. Observe the speed control indicator.
- Does the speed control indicator illuminate when triggered on and turn off when triggered off?
- Yes : GO to R3.
- No : GO to R4.
R3 CHECK FOR CORRECT PCM OPERATION
- Disconnect all the PCM connectors.
- Check for:
  - corrosion
  - pushed-out pins
- Connect all the PCM connectors and make sure they seat correctly.
- Operate the system and verify the concern is still present.
- Is the concern still present?
- Yes : INSTALL a new PCM. REFER to ELECTRONIC ENGINE CONTROLS . TEST the system for normal operation.
- No : The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector.
R4 CHECK FOR CORRECT INSTRUMENT CLUSTER OPERATION
- Disconnect the instrument cluster connector.
- Check for:
  - corrosion
  - pushed-out pins
- Connect the instrument cluster connector and make sure it seats correctly.
- Operate the system and verify the concern is still present.
- Is the concern still present?
- Yes : INSTALL a new instrument cluster. REFER to INSTRUMENT CLUSTER . TEST the system for normal operation.
- No : The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector.