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Home >> Chevrolet >> 2018 >> Spark LT, Automatic CVT Trans >> Repair and Diagnosis >> External Pages >> Different car >> Section 56 (Automatic Transmission - JATCO CVT) >> Diagnostic Information and Procedures >> DTC P0885: Transmission Control Module (TCM) Power Relay Control Circuit >> Circuit/System Description

Circuit/System Description

WARNING: This page is about a different car, the 2017 Chevrolet Spark. However, it is still accessible from the selected car via links, so may be relevant.

The Transmission Control Module Relay supplies 3 ignition voltage signals to the transmission control module.

Two of the ignition voltage circuits are Transmission Main Relay Fused Supply 1 circuits which are protected by fuse F14UA, X50A Fuse Block - Underhood. The other voltage circuit is the Transmission Main Relay Control circuit which is protected by fuse F2UA, X50A Fuse Block - Underhood.

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