For 1990-2009 cars

Step | Action | Normal Result(s) | Abnormal Result(s)*
--- | --- | --- | ---
1 |

1. Start the engine.
2. Move the blower speed selector switch to any position except the OFF position.
3. Press the air conditioning (A/C) switch to the ON position.

• | The blower motor runs.

• | The A/C compressor clutch engages.

• | Cold air is delivered to the passenger compartment.

• | The A/C condenser fan motor runs.

• | The A/C compressor control module may cycle the A/C compressor clutch and the A/C condenser fan motor ON and OFF.

• | HVAC Compressor Clutch Does Not Engage

• | TXV Air Conditioning (A/C) System Diagnosis

• | Condenser Fan Inoperative

2 | Turn the A/C switch to the OFF position. |

• | The A/C compressor clutch disengages.

• | The A/C condenser fan motor stops running.

• | Condenser Fan Always On

• | HVAC Compressor Clutch Does Not Disengage

* Refer to the appropriate symptom diagnostic table for the applicable abnormal result.