Air Mix Door

Inspection Flow:

TROUBLE DIAGNOSIS PROCEDURE FOR AIR MIX DOOR (LAN)

SYMPTOM:
- Discharge air temperature does not change.
- Air mix door motor does not operate.

Step 1:

Steps 2 - 3:

Steps 4 - 6:

Steps 7 - 9:

DIAGNOSTIC PROCEDURE FOR AIR MIX DOOR MOTOR, MODE DOOR MOTOR AND INTAKE DOOR MOTOR CIRCUIT

SYMPTOM: Air mix door motor, mode door motor and/or intake door motor does not operate normally.

Air Mix Door Motor PBR Circuit

DIAGNOSTIC PROCEDURE

SYMPTOM: If PBR circuit is open or shorted. (-26 or 26 is indicated on the display as a result of conducting Self-diagnosis STEP 2.)

Perform diagnostic procedure for air mix door motor, mode door motor and intake.