Is the voltage greater than 11 volts?
Yes | GO to B5 |
|---|---|
No | GO to B4 |
B4 REPEAT THE ON-DEMAND SELF-TEST AND CHECK FOR VOLTAGE TO THE HIGH MOUNTED STOPLAMP
Using a diagnostic scan tool, perform the BCM self-test. Clear the Diagnostic Trouble Codes (DTCs) and repeat the self-test (required to enable the lamp output driver if DTC U1000:00 is present). While applying the brake pedal, measure:
Click to display connectors
Positive Lead | Measurement / Action | Negative Lead |
|---|---|---|
C475-1 | Ground |
Is the voltage greater than 11 volts?
Yes | INSTALL a new high mounted stoplamp. REFER to: High Mounted Stoplamp - Coupe (417-01 Exterior Lighting, Removal and Installation). |
|---|---|
No | GO to B6 |
B5 CHECK THE HIGH MOUNTED STOPLAMP GROUND CIRCUIT FOR AN OPEN
While applying the brake pedal, measure:
Click to display connectors
Positive Lead | Measurement / Action | Negative Lead |
|---|---|---|
C475-1 | C475-2 |
Is the voltage greater than 11 volts?
Yes | INSTALL a new high mounted stoplamp. REFER to: High Mounted Stoplamp - Coupe (417-01 Exterior Lighting, Removal and Installation). |
|---|---|
No | REPAIR the circuit. |
B6 CHECK THE HIGH MOUNTED STOPLAMP SUPPLY CIRCUIT FOR A SHORT TO GROUND
Ignition OFF. Disconnect: BCM C2280E. Measure:
Click to display connectors
Positive Lead | Measurement / Action | Negative Lead |
|---|---|---|
C475-1 | Ground |
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.