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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 P2670 or P2671: Actuator High Control Circuit Group 2 >> 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 high side driver 2 is internal to the transmission control module (TCM). With the ignition ON, the high side driver 2 provides 12 V to the transmission control solenoid valve 1, 2, 3, 6, 7 and 9. If excessive current flow is detected in the high side driver 2 circuit, 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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