P2796
DTC P2796 (2.4L Hybrid)
Circuit Description
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 transmission during Engine Idle Off mode. The auxiliary transmission fluid pump attaches to the transmission side cover assembly. The auxiliary transmission fluid pump relay receives voltage through the battery positive voltage circuit. The starter generator control module (SGCM) controls the auxiliary pump by providing the ground path on the auxiliary pump relay control circuit. The SGCM monitors the auxiliary transmission fluid pump relay control circuit voltage.
When the SGCM detects a continuous open or short to ground in the auxiliary transmission pump circuit, then DTC P2796 sets. DTC P2796 is a type B DTC.
DTC Descriptor
This diagnostic procedure supports the following DTC:
DTC P2796 Auxiliary Transmission Fluid Pump Relay Control Circuit
Conditions for Running the DTC
The Wake Up signal is ON.
Conditions for Setting the DTC
SGCM detects an open or short to ground in the auxiliary transmission fluid pump control circuit.
Action Taken When the DTC Sets
* The SGCM requests the ECM to illuminate the malfunction indicator lamp (MIL) during the second consecutive trip in which the Conditions for Setting the DTC are met.
* The SGCM inhibits Auxiliary Transmission Fluid Pump Relay control output.
* The ECM records the operating conditions when the Conditions for Setting the DTC are met. The ECM stores this information as Freeze Frame and Failure Records.
* The ECM stores DTC P2796 in ECM history during the second consecutive trip in which the Conditions for Setting the DTC are met.
Conditions for Clearing the MIL/DTC
* The SGCM requests the ECM to turn OFF the MIL during the third consecutive trip in which the diagnostic test runs and passes.
* A scan tool can clear the MIL/DTC.
* The ECM clears the DTC from ECM history if the vehicle completes 40 warm-up cycles without an emission-related diagnostic fault occurring.
* The ECM cancels the DTC default actions when the fault no longer exists and/or the ignition switch is OFF long enough in order to power down the ECM.
Diagnostic Aids
For an intermittent condition, refer to Testing for Intermittent Conditions and Poor Connections. Component Tests and General Diagnostics
