Circuit Description

WARNING: This page is about a different car, the 2003 Saturn Vue. However, it is still accessible from the selected car via links, so may be relevant.

The reverse, 1st shift solenoid (SS) valve (S1) is commanded ON in NEUTRAL and first gear. The reverse, 1st SS valve (S1) controls transmission fluid pressure acting on the neutral relay and M1 shift valves to position the valves for the appropriate gear. The reverse, 1st SS valve (S1) is a normally open exhaust valve located on the front control valve body. The solenoid is case grounded. The output driver module (ODM), within the TCM, commands the solenoid ON or OFF by providing voltage. When the reverse, 1st SS valve (S1) is commanded ON, the TCM senses high voltage. When the reverse, 1st SS valve (S1) is commanded OFF, the TCM senses low voltage.

If the TCM detects a continuous open or short to voltage in the reverse, 1st SS valve (S1) circuit, then DTC P0974 sets. DTC P0974 is a type A DTC.