Fault Code 1867
Fault Code 1867
Servo motor for rear left temperature valve
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
- Short circuit to B+
- Short circuit or open circuit
- Short circuit to ground
- Servo motor flap stiff
- Servo motor faulty
- Rear air-conditioning system regulator faulty
Affected pins
Air-conditioning system regulator control module, rear: Plugs B, C and D
- Plug B: Pin 14 Left temp. valve (servo motor for rear left temperature valve OPEN)
- Plug B: Pin 15 Left temp. valve (servo motor for rear left temperature valve CLOSED)
- Plug C: Pin 14 Left temp. valve (feedback signal lead, servo motor for rear left temperature valve)
- Plug D: Pin 3 5 V reference voltage
- Plug D: Pin 7 Ground signal
Diagnosis/troubleshooting