Pinpoint Test Z: The Reversing Lamps Are On Continuously: 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.
- Z1 CHECK THE TRANSMISSION CONTROL MODULE (TCM) PIDs
- Key in ON position.
- Enter the following diagnostic mode on the diagnostic tool: TCM Transmission Range PIDs.
- Monitor the TCM transmission range PIDs while placing the gear selector lever through all gear selections.
- Do all the PIDs agree with the gear selections?
- Yes : GO to Z2.
- No : REFER to AUTOMATIC TRANSAXLE/TRANSMISSION - CVT or AUTOMATIC TRANSAXLE - 6 SPEED to continue diagnosis of the transaxle.
- Z2 CHECK THE AUTO-DIMMING INTERIOR MIRROR
- Key in OFF position.
- Disconnect: Electrochromatic Interior Mirror C911.
- Key in ON position.
- Do the reversing lamps continue to illuminate?
- Yes : GO to Z3.
- No : INSTALL a new auto-dimming interior mirror. REFER to REAR VIEW MIRRORS . TEST the system for normal operation.
- Z3 CHECK THE PARKING AID MODULE
- Key in OFF position.
- Disconnect: Parking Aid Module (C3267.
- Key in ON position.
- Do the reversing lamps continue to illuminate?
- Yes GO to Z4.
- No : GO to Z5.
- Z4 CHECK CIRCUIT 1367 (WH/YE) FOR A SHORT TO VOLTAGE
- Key in OFF position.
- Disconnect: SJB C2280e.
- Key in ON position.
- Do the reversing lamps continue to illuminate?
- Yes : REPAIR the circuit. TEST the system for normal operation.
- No : GO to Z6.
- Z5 CHECK FOR CORRECT PARKING AID MODULE OPERATION
- Key in OFF position.
- Disconnect the parking aid module connector.
- Check for:
- corrosion
- pushed-out pins
- Connect the parking aid module 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 parking aid module. REFER to WARNING DEVICES . 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.
- Z6 CHECK FOR CORRECT SJB OPERATION
- Key in OFF position.
- Disconnect all the SJB connectors.
- Check for:
- corrosion
- pushed-out pins
- Connect all the SJB 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 SJB. REFER to MULTIFUNCTION ELECTRONIC MODULES . 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.