Coolant Temperature Sensor (CTS)
The CTS senses engine coolant temperature and sends a proportionate signal to the ECM. It does not allow C-4 system operation (closed loop) while coolant temperature is below 90° F.
The CTS senses engine coolant temperature and sends a proportionate signal to the ECM. It does not allow C-4 system operation (closed loop) while coolant temperature is below 90° F.