Drive Motor Coolant Pump Control Circuit
Electrical fault on the drive motor electric coolant pump control output. Without flow, motor and inverter overheat under load.
Affected components
- Electric coolant pump
- Hybrid control module
- Wiring harness
Common causes
- High likelihood: Pump electrically failed
- Medium likelihood: Wiring open
Possible symptoms
- EV/hybrid system warning light on
- Reduced motor power or torque
- Possible limp mode or vehicle shutdown
Diagnostic notes
- The malfunction indicator lamp may illuminate
- Reduced-power or limp mode may occur
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.