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Home >> Buick >> 2007 >> Allure CX >> Repair and Diagnosis >> External Pages >> Different car >> Section 67 (Automatic Transaxle - 4T65-E - DTC P0218 To DTC P2534) >> DTC P0961 (3.6L and 5.3L) >> Circuit/System Description

Circuit/System Description

WARNING: This page is about a different car, the 2008 Buick LaCrosse and 2008 Buick Allure. However, it is still accessible from the selected car via links, so may be relevant.

The pressure control (PC) solenoid valve is located in the valve body. The PC solenoid valve controls transmission line pressure based on current flow through the windings. The transmission control module (TCM) determines desired line pressure based on throttle position and other inputs. The TCM then varies the duty cycle on the high side of the PC solenoid valve to control current flow to the solenoid. Current is controlled from about 0.02 amp for maximum line pressure to 1.1 amps for minimum line pressure. The TCM monitors the actual current to the solenoid.

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