Circuit Description

WARNING: This page is about a different variant/trim than selected.

The Auxiliary Transmission Fluid Pump is an electrical device that is used with the Auxiliary Transmission Fluid Pump Relay to maintain Transmission Fluid line pressure to the forward clutch during Engine Idle Off mode. Engine Idle Off mode may also be referred to as PHT Engine Idle Off State. The Auxiliary Transmission Fluid Pump attaches to the transmission valve body assembly. The Auxiliary Transmission Fluid Pump Relay receives voltage through the Battery Positive voltage circuit. The Hybrid Control Module (HCM) controls the Auxiliary pump by providing the ground path on the Auxiliary Pump relay control circuit. The HCM monitors the Auxiliary Transmission Fluid pump relay control circuit voltage.

When the HCM detects a continuous open, short to ground or short to voltage in the Auxiliary Transmission pump circuit, then DTC P2796 sets. DTC P2796 is a type B DTC.