A/C Compressor Motor Voltage A Low

Common symptoms

What you'll notice

• Check the voltage supply to the A/C compressor motor and ensure it is within the recommended range.
• Inspect and clean the electrical connections leading to the A/C compressor motor.
• Replace the A/C compressor motor if it is found to be faulty or damaged.
• Check for any wiring issues or shorts that may be causing the low voltage problem.

Common causes

Most likely first

1. Faulty A/C compressor motor
2. Low voltage in the A/C compressor circuit
3. Malfunctioning A/C compressor relay
4. Wiring issues in the A/C compressor circuit
5. Faulty A/C control module

How to diagnose & fix

Work through it in order

1. Weak or no cold air coming out of the air conditioning system
2. A/C system not functioning properly or not cooling as effectively
3. Strange noises or vibrations coming from the A/C
4. A/C compressor clutch not engaging or disengaging correctly
5. Increased strain on the engine when the A/C is turned on