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ACC / B0197 04

Read the instructions below then start the fault diagnostic procedure.

Symptom: The ventilation fan is not working. No A/C function.

  B0197 04


Fan Blower Circuit, Open

Fault symptom

The ventilation fan is not working.

No A/C function.

On-board diagnosis

Type of diagnosis:

Continuous

Enable criteria:

Ventilation fan activated.

Fault criteria:

Break in fan motor circuit.

System reaction to a fault:

A/C function 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:

Test value:
Fan Feedback OK
Activation:
Fan PWM Control
(See also description of readings/activations in diagnostic tool)