LEMON Manuals: Even more car manuals for everyone
Home >> GMC >> 2003 >> Safari Van Cargo, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1488 (Automatic Transaxle - AF33-5 (DTC P0962 - P1868)) >> Diagnostic Information & Procedures >> DTC P0979 >> Circuit Description

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 1-2, 2-3, reverse shift solenoid (SS) valve (S3) controls transmission fluid pressure acting on the U2 shift valve to position the valve for the appropriate gear. The 1-2, 2-3, reverse SS valve (S3) 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 1-2, 2-3, reverse SS valve (S3) is commanded ON, the TCM senses high voltage. When the 1-2, 2-3, reverse SS valve (S3) is commanded OFF, the TCM senses low voltage.

If the TCM detects a continuous short to ground in the 1-2, 2-3, reverse SS valve (S3) circuit, then DTC P0979 sets. DTC P0979 is a type A DTC.

scientia non olet · About LEMON Manuals