Chevrolet Trax: DTC B0223 (C60): Recirculate position command 1 circuit

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.

DTC Descriptor

DTC B0223 01

Recirculate Position Command 1 Circuit Short to Battery

DTC B0223 02

Recirculate Position Command 1 Circuit Short to Ground

DTC B0223 04

Recirculate Position Command 1 Circuit Open

Diagnostic Fault Information

Circuit/System Description

The air inlet actuator is a 2-wire bi-directional electric motor. There are two control circuits that enable the actuator to operate. The control circuits use either a ground or 12 V value to coordinate the actuator movement.

When the actuator is at rest, both control circuits have a value of approximately 0 V. In order to move the actuator, the HVAC control module grounds one of the control circuits while providing the other with 12 V.

The HVAC control module reverses the polarity of the control circuits to move the actuator in the opposite direction.

Conditions for Running the DTC

Ignition ON

Conditions for Setting the DTC

B0223 01

The HVAC control module detects a short to battery in either air inlet control circuit.

B0223 02

The HVAC control module detects a short to ground in either air inlet control circuit.

B0223 04

The HVAC control module detects an open in an either inlet control circuit.

Action Taken When the DTC Sets

The air inlet door will be inoperative.

Reference Information

Schematic Reference

HVAC Schematics (Encore), HVAC Schematics (Trax)

Connector End View Reference

WIRING SYSTEMS AND POWER MANAGEMENT - COMPONENT CONNECTOR END VIEWS - INDEX - ENCORE WIRING SYSTEMS AND POWER MANAGEMENT - COMPONENT CONNECTOR END VIEWS - INDEX - TRAX

Description and Operation

Manual HVAC Description and Operation

Electrical Information Reference

• Circuit Testing
• Connector Repairs
• Testing for Intermittent Conditions and Poor Connections
• Wiring Repairs

Scan Tool Reference

Control Module References for scan tool information

Circuit/System Verification

1. Ignition ON.
2. Verify the M4 Air Inlet Door Actuator moves between the RECIRCULATE and FRESH AIR positions within 10 s when pressing the recirculation switch.

• If the M4 Air Inlet Door Actuator does not move between the RECIRCULATE and FRESH AIR positions

Refer to Circuit/System Testing

• If the M4 Air Inlet Door Actuator moves between the RECIRCULATE and FRESH AIR positions

3. Verify the M4 Air Inlet Door Actuator returns to its previous position within 10 s when pressing the recirculation switch.

• If the M4 Air Inlet Door Actuator does not return to its previous position

Refer to Circuit/System Testing.

• If the M4 Air Inlet Door Actuator does return to its previous position

4. All OK.

Circuit/System Testing

1. Ignition OFF, disconnect the harness connector at the M4 Air Inlet Door Actuator.
2. Connect a test lamp between control circuit terminal A and control circuit terminal B, ignition ON.
3. Verify the test lamp turns ON for approximately 10 s when commanding the Air Recirculation Mode Switch On and Off with a scan tool

If the test lamp does not turn ON and OFF during either of the commands

1. Ignition OFF, remove the test lamp and disconnect the X3 harness connector at the K33 HVAC Control Module, ignition ON.
2. Test for less than 1 V between each control circuit and ground.

• If 1 V or greater, repair the short to voltage on the circuit.
• If less than 1 V

3. Test for infinite resistance between each control circuit and ground.

• If less than infinite resistance, repair the short to ground on the circuit.
• If infinite resistance

4. Test for infinite resistance between the control circuits.

• If less than infinite resistance, repair the short on the circuit.
• If infinite resistance

5. Test for less than 2 ohms in each control circuit end to end.

• If 2 ohms or greater, repair the open/high resistance in the circuit.
• If less than 2 ohms, replace the K33 HVAC Control Module.

If the test lamp turns ON and OFF during each of the commands

4. Test or replace the M4 Air Inlet Door Actuator.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the repair.

• HVAC Component Replacement Reference (C67), HVAC Component Replacement Reference (C60), HVAC Component Replacement Reference (C41)
• Control Module References for HVAC control module replacement, programming and setup

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