B0420

B0420 06

Air Mix Door Motor Right Circuit, Open/Short to Ground







Fault symptom
- Defective temperature control.

On-board diagnosis

Type of diagnosis:
- Continuous

Enable criteria:
- Ignition ON.
- Output activated.

Fault criteria:
- Break or short-circuit to ground in the circuit of the air distribution damper motor.

System reaction to a fault:
- None

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:
- Air Mix Door Motor Right

Activation:
- Air Mix Door Motor Right
(See also description of readings/activations in diagnostic tool)