Workshop Manuals Factory service & repair Vauxhall
Vauxhall Astra J12 · HVAC
12 · Heating & A/C

Air Recirculation Malfunction

Make
Vauxhall
Model
Astra J
Section
Diagnostic Information and Procedures › Miscellaneous › Air Recirculation Malfunction
HVACAir Recirculation Malfunction

Air Recirculation Malfunction

Diagnostic Instructions

•  Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.
•  Review Strategy Based Diagnosis for an overview of the diagnostic approach.
•  Diagnostic Procedure Instructions provides an overview of each diagnostic category.

Diagnostic Fault Information



Circuit
Short to Ground
Open/High Resistance
Short to Voltage
Signal Performance

Stepper Motors 12V Reference
B023A 02, B0223 06, B0233 06, B0418 06
B0223 06, B0233 06, B0418 06
-
-

Recirculation Actuator Control 1
B0223 06
B0223 06
B0223 01
1

Recirculation Actuator Control 2
B0223 06
B0223 06
B0223 01
1

Recirculation Actuator Control 3
B0223 06
B0223 06
B0223 01
1

Recirculation Actuator Control 4
B0223 06
B0223 06
B0223 01
1

1. Air Recirculation Malfunction
 

Circuit/System Description

The desired position of the recirculation flap can be set with the recirculation switch at the HVAC control. The selected value is sent to the HVAC control module via the LIN-Bus. The HVAC control module supplies a 12 V reference voltage to the stepper motor and energizes the 4 stepper motor coils with a pulsed ground signal. The stepper motor moves the recirculation flap into the selected position.

Diagnostic Aids

Check the following mechanical fault sources:

•  Air distribution box
•  Air distribution hoses/air distribution ducts

Reference Information


Schematic Reference

HVAC Schematics


Connector End View Reference

Component Connector End Views


Description and Operation

Manual HVAC Description and Operation


Electrical Information Reference


Scan Tool Reference

Control Module References for scan tool information

Circuit/System Testing

1. Ignition ON, press and release the defrost switch. Verify the scan tool Enhanced Defrost Switch parameter changes between Active and Inactive.
    ⇒  If the parameter does not change

Replace the A26 HVAC Controls.     ⇓  If the parameter changes

2. Press and release the recirculation switch. Verify the scan tool Air Recirculation Mode Switch parameter changes between Active and Inactive.
    ⇒  If the parameter does not change

Replace the A26 HVAC Controls.     ⇓  If the parameter changes

3. Replace the M46 Air Recirculation Door Actuator and verify the M46 Air Recirculation Door Actuator can be put into all positions.
    ⇒  If the M46 Air Recirculation Door Actuator cannot be put into all positions

Replace the K33 HVAC Control Module.     ⇓  If the M46 Air Recirculation Door Actuator can be put into all positions

4. All OK.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

•  Control Module References for HVAC control module replacement, programming and setup

Parts & tools for this job For Vauxhall Astra

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