Fault Code 1810
Fault Code 1810
Servo motor for right temperature valve
Diagnostic conditions
- Ignition on
- Battery voltage OK (11.4 to 14.5 V)
- Internal function test completed on air-conditioning system regulator control module
Possible causes of fault
- No or incorrect basic setting
- Short circuit to ground
- Open circuit/short circuit to B+
- Servo motor flap stiff
- Servo motor faulty
- Front air-conditioning system regulator faulty
Affected pins
Air-conditioning system regulator control module, front: Plugs A and E
- Plug A: Pin 12 Right temp. valve (feedback signal lead for right temperature valve)
- Plug A: Pin 19 Right temp. valve (right temperature valve OPEN)
- Plug A: Pin 20 Right temp. valve (right temperature valve CLOSED)
- Plug E: Pin 1 5 V reference voltage
- Plug E: Pin 8 Ground signal
Diagnosis/troubleshooting