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Home >> GMC >> 2003 >> Safari Van Cargo, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1576 (Automatic Transaxle - 4T45-E - DTC P0843 To DTC P2637) >> DTC P0B09 (2.4L Hybrid) >> Circuit Description

Circuit Description

WARNING: This page is about a different car, the 2007 Saturn Vue. However, it is still accessible from the selected car via links, so may be relevant.

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 fault on the auxiliary transmission fluid pump relay control circuit, then DTC P0B09 sets. DTC P0B09 is a type B DTC.

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