Pinpoint Test R: The Speed Control Indicator Is Never/Always On
WARNING: This page is about a different car, the 2007 Lincoln Mark LT and 2007 Ford Pickup. 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 article.
- R2 CARRY OUT THE INSTRUMENT CLUSTER OUTPUT STATE CONTROL USING THE SCAN TOOL
- Key in ON position.
- Enter the following diagnostic mode on the diagnostic tool: Instrument Cluster Output State Control
- Enter the instrument cluster output state control and select ALL_LAMP. Command all the warning lamps on and off and observe the speed control indicator.
- Does the speed control indicator illuminate when commanded on and turn off when commanded off?
- R3 CHECK FOR CORRECT PCM OPERATION
- Disconnect all the PCM connectors.
- Check for:
- corrosion
- damaged pins
- 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 article. 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 all the instrument cluster connectors.
- Check for:
- corrosion
- damaged pins
- pushed-out pins
- Connect all the instrument cluster 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 instrument cluster. REFER to Instrument Cluster (IC) in this article. 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.