Pinpoint Test F: All The Courtesy Lamps Stay On Continuously
Interior Lighting
Pinpoint Test F: All The Courtesy Lamps Stay On Continuously
Normal Operation
The Body Control Module (BCM) sends a voltage signal to each door ajar switch, which is routed to ground when the door is closed (the door ajar switch is closed when the door is closed). When the door is opened, the signal to ground is interrupted indicating an open door to the BCM (Body Control Module).
NOTE: All the door ajar switches are integral to the door latch except for the rear door ajar switches on Super Cab vehicles. The rear door ajar switches on Super Cab vehicles are replaced independently of the door latch.
When the BCM (Body Control Module) detects an open door or a request from the instrument panel dimmer switch, voltage is provided to the courtesy lamps.
This pinpoint test is intended to diagnose the following:
- Wiring, terminals or connectors
- Door ajar switch
- BCM (Body Control Module)
PINPOINT TEST F : ALL THE COURTESY LAMPS STAY ON CONTINUOUSLY
NOTICE: Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector.
F1 CHECK THE DOOR AJAR SWITCH PIDs
- Ignition ON.
- Enter the following diagnostic mode on the scan tool: BCM (Body Control Module) DataLogger.
- Monitor the BCM (Body Control Module) door ajar switch PIDs (DOOR_SW_DRVR, DOOR_SW_PSGR, DOOR_SW_LR, DOOR_SW_RR) while opening and closing all the doors.
Do all the door ajar switch PID values agree with the door positions?
Yes
If the interior courtesy lamps are on, GO to Pinpoint Test G. Pinpoint Test G: The Interior Courtesy Lamps Stay On Continuously
If the cargo lamp or puddle lamps are on, GO to Pinpoint Test H. Pinpoint Test H: The Cargo Lamp/Puddle Lamps Stay On Continuously
No
GO to F2.
F2 BYPASS THE SUSPECT DOOR AJAR SWITCH
- Disconnect: Suspect Door Ajar Switch.
- For any door except a rear door on Super Cab vehicles, connect a fused jumper wire between the suspect door ajar switch connector pins, harness side as follows:
Suspect Door Ajar Switch Connector-Pin Circuit Connector-Pin Circuit LH front C525-5 CPL26 (GN/VT) C525-6 GD134 (BK/VT) RH front C609-5 CPL31 (WH) C609-6 GD139 (BK/YE) LH rear C705-5 CPL36 (GN) C705-6 GD134 (BK/VT) RH rear C805-5 CPL39 (YE) C805-6 GD139 (BK/YE)
- For a rear door on Super Cab vehicles, connect a fused jumper wire between the suspect door ajar switch connector pins, harness side as follows:
Location Connector-Pin Circuit Connector-Pin Circuit LH rear C715-2 CPL36 (GN) C715-1 GD134 (BK/VT) RH rear C820-2 CPL39 (YE) C820-1 GD139 (BK/YE)
- Enter the following diagnostic mode on the scan tool: BCM (Body Control Module) DataLogger.
- Monitor the suspect BCM (Body Control Module) door ajar switch PID (DOOR_SW_DRVR, DOOR_SW_PSGR, DOOR_SW_LR, DOOR_SW_RR).
Does the PID indicate the door is closed?
Yes
REMOVE the jumper wire. INSTALL a new door latch or door ajar switch in question. TEST the system for normal operation.
No
REMOVE the jumper wire. GO to F3.
F3 BYPASS THE DOOR AJAR SWITCH GROUND CIRCUIT
- For any door except a rear door on Super Cab vehicles, connect a fused jumper wire between the suspect door ajar switch connector, harness side and ground as follows:
Suspect Door Ajar Switch Connector-Pin Circuit LH front C525-5 CPL26 (GN/VT) RH front C609-5 CPL31 (WH) LH rear C705-5 CPL36 (GN) RH rear C805-5 CPL39 (YE)
- For a rear door on Super Cab vehicles, connect a fused jumper wire between the suspect door ajar switch connector, harness side and ground as follows:
Location Connector-Pin Circuit LH rear C715-2 CPL36 (GN) RH rear C820-2 CPL39 (YE)
- Enter the following diagnostic mode on the scan tool: BCM (Body Control Module) DataLogger.
- Monitor the suspect BCM (Body Control Module) door ajar switch PID (DOOR_SW_DRVR, DOOR_SW_PSGR, DOOR_SW_LR, DOOR_SW_RR).
Does the PID indicate the door is closed?
Yes
REMOVE the jumper wire. REPAIR the ground circuit in question for an open. TEST the system for normal operation.
No
REMOVE the jumper wire. GO to F4.
F4 CHECK THE SUSPECT DOOR AJAR SWITCH INPUT CIRCUIT FOR AN OPEN
- Disconnect: BCM (Body Control Module) C2280C.
- Measure the resistance between the suspect door ajar switch connector, harness side and the BCM (Body Control Module) connector, harness side as follows:
Suspect Door Ajar Switch Connector-Pin BCM (Body Control Module) Connector-Pin Circuit LH front C525-5C2280C-9 CPL26 (GN/VT) RH front C609-5C2280C-5 CPL31 (WH) LH rear (Super Crew) C705-5C2280C-20 CPL36 (GN) LH rear (Super Cab) C715-2C2280C-20 CPL36 (GN) RH rear (Super Crew) C805-5C2280C-21 CPL39 (YE) RH rear (Super Crew) C820-2C2280C-21 CPL39 (YE)
Is the resistance less than 5 ohms?
Yes
GO to F5.
No
REPAIR the ajar input circuit in question for an open. TEST the system for normal operation.
F5 CHECK FOR CORRECT BCM (Body Control Module) OPERATION
- Disconnect all the BCM (Body Control Module) connectors.
- Check for:
- corrosion
- damaged pins
- pushed-out pins
- Connect all the BCM (Body Control Module) 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 BCM (Body Control Module). 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.