B3884 02

B3884 02

Brake Light High Mounted Circuit, Short to Ground







Fault symptom
- Brake light, faulty function.
- Messages shown in SID.

On-board diagnosis

Type of diagnosis:
- Continuous

Enable criteria:
- Brake light is lit.

Fault criteria:
- Current consumption is over 3.5 A for more than 10 ms.

System reaction to a fault:
- Control module output is switched off.

Checking the wiring harness
- Move the wiring harness at several spots and in several directions to reveal intermittent breaks and short-circuits. Check switches, connectors and crimp connections for oxidation, retracted pins and pin clamping force.

Diagnostic help

Diagnosis regards:
- Electrical fault in connecting leads or component.

Functions in the diagnostic tool related to the fault:

Activation:
- High Position Brake Light