Pinpoint Test K: The Charging System Warning Indicator Is Never/Always On
WARNING: This page is about a different car, the 2005 Lincoln LS. However, it is still accessible from the selected car via links, so may be relevant.
- K1 CHECK THE CHARGING SYSTEM
- Check the charging system operation. Refer to CHARGING SYSTEM - GENERAL INFORMATION .
- Is the charging system operating correctly?
- Yes : GO to K2.
- No : REFER to CHARGING SYSTEM - GENERAL INFORMATION to continue diagnosis of the charging system.
- K2 CHECK THE CHARGING SYSTEM WARNING INDICATOR
- Key in ON position.
- Enter the following diagnostic mode on the diagnostic 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 charging system warning indicator.
- Does the charge system warning indicator turn on when triggered on, and turn off when triggered off?
- K3 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.
- K4 CHECK FOR CORRECT INSTRUMENT CLUSTER OPERATION
- Disconnect all the instrument cluster connectors.
- Check for:
- corrosion
- 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 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.