Auxiliary Coolant Pump
The auxiliary coolant pump is an electric pump mounted on a bracket, in the right of the engine compartment.
When the engine is turned off, the auxiliary coolant pump provides engine coolant flow to prevent coolant boiling in the turbocharger.
The auxiliary coolant pump has a 3-pin connector.
The 3-pin connector provides the following connections:
- A permanent startup battery voltage, supplied from a fused output from the EJB.
- A hardwired connection to the PCM.
- A ground connection.