CIM / B3622 05

Read the instructions below then start the fault diagnostic procedure.

Symptom: Horn not working. No Sentronic function.

B3622 05

Fault symptom

Horn not working.

No Sentronic function.

On-board diagnosis

Type of diagnosis:

Continuous

Enable criteria:

Turn Ignition On

Fault criteria:

Control module output short-circuit to B+/open-circuit.

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

The DTC can be generated if the control module is programmed for a vehicle equipped with Sentronic, but there are no Sentronic buttons.