Charge Air Cooler Coolant Pump Control Circuit Open

Learn what charge air cooler coolant pump control circuit open means location and how to repair.

Charge air cooler coolant pump control circuit open. The supercharger has an integrated intercooler radiator with its own coolant system to reduce the temperature of the air being forced into the engine. The powertrain control module monitors the charge air cooler coolant pump function. If the ecm detects an improper voltage on the pump relay control circuit this dtc sets. Code p023a charge air cooler coolant pump control circuit open is active when there is an open circuit within the charge air cooler coolant pump and or its circuit.

The powertrain control module pcm monitors the charge air cooler coolant pump function. Point being both mechanical and electrical faults are equally possible. The other is a chafed control wire that wore through the electrical connection causing an open circuit. This allows the spring tension to separate the relay armature contact from the relay load circuit contact which interrupts current flow to the supercharger charge air cooler coolant pump.

The pcm sets the obdii code when the charge air cooler coolant pump is out of factory specifications.