Is the voltage greater than 11 volts?
Yes | CHECK the internal headlamp harness for open or shorted circuits and damaged or pushed-out pins. If the harness is not OK, REPAIR the harness. If the harness cannot be repaired, INSTALL a new headlamp assembly. REFER to: Headlamp Assembly (417-01 Exterior Lighting, Removal and Installation). | |
|---|---|---|
No | GO to C5 | |
C5 CHECK THE HIGH BEAM CIRCUIT FOR A SHORT TO GROUND
Ignition OFF. Place the headlamp switch in the OFF position. Disconnect: BCM C2280G. Measure:
Click to display connectors
LH Headlamp
Positive Lead | Measurement / Action | Negative Lead |
|---|---|---|
C1021-12 | Ground |
Click to display connectors
RH Headlamp
Positive Lead | Measurement / Action | Negative Lead |
|---|---|---|
C1041-12 | Ground |
Is the resistance greater than 10,000 ohms?
Yes | GO to C6 | |
|---|---|---|
No | REPAIR the circuit. After the repair: If no Diagnostic Trouble Codes (DTCs) are present, TEST the system for normal operation. If DTC U1000:00 is present, CLEAR the Diagnostic Trouble Codes (DTCs) and REPEAT the self-test (required to enable the lamp output driver if DTC U1000:00 is present). If DTC U3000:49 is present, Click here to access Guided Routine (BCM). | |
C6 CHECK THE HIGH BEAM SUPPLY CIRCUIT FOR AN OPEN
Measure:
Click to display connectors
LH Headlamp (Except China)
Positive Lead | Measurement / Action | Negative Lead |
|---|---|---|
C1021-12 | C2280G-11 |
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.