Possible Sources
PINPOINT TEST D : ALL THE COURTESY LAMPS STAY ON CONTINUOUSLY
D1 CHECK THE DOOR AJAR SWITCH PARAMETER IDENTIFICATIONS (PIDS)
Ignition ON. Using a diagnostic scan tool, view BCM Parameter Identifications (PIDs). Monitor the BCM DOOR_SW_DRVR and DOOR_SW_PSGR Parameter Identifications (PIDs) while opening and closing the doors.
Do all the door ajar switch PID values agree with the door positions?
Yes | For the interior courtesy lamps, GO to Pinpoint Test B For the pony projection lamps, GO to Pinpoint Test C | |
|---|---|---|
No | GO to D2 | |
D2 BYPASS THE SUSPECT DOOR LATCH
Disconnect: suspect door latch. Connect a fused jumper wire:
Click to display connectors
LH Front Door Ajar Switch
Positive Lead | Measurement / Action | Negative Lead |
|---|---|---|
C525-3 | C525-5 |
Click to display connectors
RH Front Door Ajar Switch
Positive Lead | Measurement / Action | Negative Lead |
|---|---|---|
C609-6 | C609-4 |
Using a diagnostic scan tool, view BCM Parameter Identifications (PIDs). Monitor the BCM DOOR_SW_DRVR and DOOR_SW_PSGR Parameter Identifications (PIDs).
Does the PID indicate the door in question is closed?
Yes | REMOVE the fused jumper wire. INSTALL a new front door latch. REFER to: Front Door Latch (501-14 Handles, Locks, Latches and Entry Systems, Removal and Installation). | |
|---|---|---|
No | REMOVE the fused jumper wire. GO to D3 | |
D3 BYPASS THE DOOR LATCH GROUND CIRCUIT
2016 Mustang workshop publication supplied to Mustang Atlas. Original technical text and illustrations; HTML formatting by Mustang Atlas. Source page numbering is retained for traceability. Follow the configuration, revision, warnings, and cross-references in the material. About this edition.