A/C Clutch Control Circuit Low
The A/C compressor clutch control circuit reports a control circuit low condition. Clutch engagement cannot be commanded reliably.
Affected components
- Ac clutch
- Wiring harness
- Ecm
Common causes
- High likelihood: Control wire shorted to ground
- Medium likelihood: Clutch coil shorted
- Low likelihood: Connector pins corroded - high contact resistance
Possible symptoms
- Check engine or transmission warning light on
- Harsh, delayed, or missing shifts
- Possible limp mode (locked in one gear)
- Slipping or shuddering during gear changes
Diagnostic notes
- The malfunction indicator lamp may illuminate
Sources
Diagnostic information is provided for reference only. Confirm the code with a compatible scan tool and follow the vehicle manufacturer's service procedures before replacing components.