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UEC / B2750 01

Read the instructions below then start the fault diagnostic procedure.

Symptom: Horn not working.

  B2750 01


Horn Relay Circuit, Short to B+

Fault symptom

Horn not working.

On-board diagnosis

Type of diagnosis:

Continuous

Enable criteria:

Ignition ON.

Fault criteria:

Voltage on the control module output exceeds 7.2 V when the horn is activated.

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:
Horn Relay