Fault Code 0249

Fault code 0249

Feedback signal from rear blower regulator

Diagnostic conditions
- Ignition on
- Battery voltage OK (11.4 to 14.5 V)
- Internal function test completed on rear air-conditioning system regulator control module

Possible causes of fault
- Upper limit value of power supply exceeded
- Lower limit value of power supply not reached
- Short circuit to ground
- Blower motor defective
- Air-conditioning system regulator faulty

Affected pins
Air-conditioning system regulator control module, rear: Plugs B, C and D
- Plug B: Pin 1 'Supply voltage (power supply of 12 V DC, rear blower regulator)'
- Plug C: Pin 12 'Blower regulator (control line, rear blower regulator)'
- Plug D: Pin 13 'Feedback voltage (feedback signal rear blower regulator)'

Diagnosis/troubleshooting