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Home >> Cadillac >> 2017 >> CTS V >> Repair and Diagnosis >> External Pages >> Different car >> Section 237 (Automatic Transmission - 8L45 (M5N) Or 8L90 (M5U) - Diagnostic Information And Procedures) >> Diagnostic Information and Procedures >> DTC P2812, P2814 or P2815: Transmission Control Solenoid Valve 7 Control Circuit >> Circuit/System Description

Circuit/System Description

WARNING: This page is about a different car, the 2016 Cadillac CTS. However, it is still accessible from the selected car via links, so may be relevant.

The transmission control solenoid valve 7 is a high pressure, normally low, variable force solenoid valve. This solenoid is also referred to as, torque converter clutch (TCC) control solenoid valve assembly. The transmission control module (TCM) high side driver 2, supplies 12 V to the transmission control solenoid valve 7. A low side driver circuit in the TCM is pulsed width modulated to vary the current to the solenoid. If excessive current flow is detected, the high side driver 2 will turn Off. When the circuit fault is corrected, the high side driver 2 will reset.

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