AWD Coupling Control Circuit
2007-2007 Mitsubishi Eclipse 2.4L I4
The 2007 Mitsubishi Eclipse is equipped with a 2.4L inline-4 engine. Below you'll find detailed c0520 diagnostic code information including labor time estimates, cost ranges, and technician notes specific to this engine configuration.
Description
Malfunction in the electronically controlled AWD coupling that distributes torque between axles.
Symptoms
- AWD warning light
- Reduced traction in AWD mode
- Vehicle operates in 2WD only
- Burning smell from coupling area
Common Causes
- Electromagnetic coupling failure
- Coupling overheated
- Wiring damage to coupling
- Control module driver failure
Diagnostic Steps
- Test coupling solenoid resistance
- Command coupling engagement with scan tool
- Check for overheating signs
- Inspect wiring and connector
- Monitor coupling temperature if sensor equipped
Repair Notes
Replace AWD coupling unit. Check fluid level in coupling if applicable.
Related Codes
Other Chassis Codes
- C0021LF Wheel Speed Sensor Range/Performance
- C0022RF Wheel Speed Sensor Range/Performance
- C0023LR Wheel Speed Sensor Range/Performance
- C0024RR Wheel Speed Sensor Range/Performance
- C0025LF Wheel Speed Sensor Circuit Intermittent
- C0026RF Wheel Speed Sensor Circuit Intermittent
- C0027LR Wheel Speed Sensor Circuit Intermittent
- C0028RR Wheel Speed Sensor Circuit Intermittent
- C0035Left Front Wheel Speed Sensor Circuit
- C0036Left Front Wheel Speed Signal Erratic
C0520 on Other Vehicles
Mitsubishi Colt JP
2002-2002 1.3L I4 4A90
Mitsubishi Colt JP
2002-2002 1.5L I4 4A91
Mitsubishi Colt JP
2003-2003 1.3L I4 4A90
Mitsubishi Colt JP
2003-2003 1.5L I4 4A91
Mitsubishi Colt JP
2004-2004 1.3L I4 4A90
Mitsubishi Colt JP
2004-2004 1.5L I4 4A91
Mitsubishi Colt JP
2005-2005 1.3L I4 4A90
Mitsubishi Colt JP
2005-2005 1.5L I4 4A91
Common Questions
What does code C0520 mean on a 2007-2007 Mitsubishi Eclipse?
C0520 stands for "AWD Coupling Control Circuit". Malfunction in the electronically controlled AWD coupling that distributes torque between axles.
What are the symptoms of C0520 on a Mitsubishi Eclipse?
Common symptoms of C0520 include: AWD warning light, Reduced traction in AWD mode, Vehicle operates in 2WD only, Burning smell from coupling area.
What causes C0520 on a 2007-2007 Mitsubishi Eclipse?
Common causes of C0520 include: Electromagnetic coupling failure, Coupling overheated, Wiring damage to coupling, Control module driver failure.
Last updated: March 2026