UEC / B3870 01
Read the instructions below then
start the fault diagnostic procedure.
Symptom: Auxiliary lamp not working.
Extra Lights Relay Circuit, Open/Short to B+
Fault symptom
Auxiliary lamp not working.
On-board diagnosis
Type of diagnosis:
Enable criteria:
Fault criteria:
| Voltage on the control module output exceeds 6 V when auxiliary lamp is on. |
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:
