Possible Causes
- Electrical Cause
- Mechanical Cause
- Control module cavity
- Circuit reference Signal I_A_CTS
- Circuit reference Ground G_R_CTS
- Monitor Description
- Coolant temperature sensor reading too high or too low at cold start
- Cooling system mechanical and fluid integrity
- Cooling fan system mechanical integrity
- Thermostat system mechanical integrity
- Engine coolant temperature sensor 1 circuit short circuit to ground, short circuit to power, open circuit, high resistance
- Connector is disconnected, connector pin is backed out, connector pin corrosion
- Engine coolant temperature sensor 1 contamination
- Engine coolant temperature sensor 1 failure