Fault Code 26

Fault code 26

Temperature mixing valve motor - No reaction to activation, signal unclear

Diagnostic conditions
- Ignition on

NOTE:
- No control module fault stored
- No fault with supply voltage (5 V)

Possible cause of fault
- Short circuit to voltage/ground or open circuit in the wiring between the air-conditioning system regulator and the temperature mixing valve
- Servo motor for temperature mixing flap faulty or flap does not open/close smoothly.

Affected terminals
Plug B, terminals 9, 13 and 20
Plug D, terminals 2 and 10

Diagnosis/troubleshooting

Diagnosis/troubleshooting (Part 1):

Diagnosis/troubleshooting (Part 2):

Diagnosis/troubleshooting (Part 3):