Possible Sources
PINPOINT TEST J : AN INDIVIDUAL AMBIENT LIGHTING LED (LIGHT EMITTING DIODE) IS
INOPERATIVE/DOES NOT CYCLE THROUGH ALL COLOR COMBINATIONS
J1 CHECK THE AMBIENT LIGHTING
Ignition ON. Place the headlamp switch in the PARKING LAMPS ON position. Observe the operation of all the ambient lighting Light Emitting Diodes (LEDs).
Is only a scuff plate trim panel ambient lighting LED effected?
Yes | GO to J2 |
|---|---|
No | For an interior door release handle ambient lighting LED, GO to J3 For a footwell ambient lighting LED, GO to J4 For the center console cup holder ambient lighting LED, GO to J5 |
J2 CHECK THE SCUFF PLATE TRIM PANEL LIGHTING COLOR SUPPLY CIRCUITS
Ignition OFF. Disconnect: LH Scuff Plate Lamp C3369 or RH Scuff Plate Lamp C3370. Disconnect: Body Control Module B (BCMB) C4368A. Disconnect: Body Control Module B (BCMB) C4368B. For the LH scuff plate lamp, measure:
Click to display connectors
Positive Lead | Measurement / Action | Negative Lead |
|---|---|---|
C3369-3 | C4368B-9 | |
C3369-2 | C4368B-10 | |
C3369-1 | C4368B-23 | |
C3369-4 | C4368A-24 |
For the RH scuff plate lamp, measure:
Click to display connectors
Positive Lead | Measurement / Action | Negative Lead |
|---|---|---|
C3370-3 | C4368B-9 | |
C3370-2 | C4368B-10 | |
C3370-1 | C4368B-23 | |
C3370-4 | C4368A-24 |
Is the resistance less than 3 ohms?
Yes | INSTALL a new ambient lighting LED. |
|---|---|
No | REPAIR the LED voltage supply circuit in question. |
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.