2-3 Shift Solenoid Valve

The 2-3 Shift Solenoid valve is attached to the valve body and is a normally open exhaust valve. The VCM/PCM activates the valve by grounding the valve through an internal quad driver. The 2-3 Shift Solenoid is ON in third and Fourth gear and OFF in First and Second gear. When ON, the valve redirects fluid to act on the shift valve. The 2-3 Shift Solenoid valve is usually green.

Three diagnostic codes are associated with the 2-3 Shift Solenoid valve. The first code is Code PO758 (2-3 Shift Solenoid Valve-electrical). The VCM/PCM continually monitors the 2-3 Shift Solenoid circuit for expected voltage. If the voltage reading is not what is expected, Code PO758 will set. While: Code PO758 is present, TCC operation will be inhibited, line pressure will be set to maximum, and the transmission will default to . Second gear only. Recovery can occur at the next ignition cycle.

The second code is Code P0756 (2-3 Shift Solenoid Valve-performance). Code PO756 will set when the calculated gear ratio is numerically higher than the gear commanded, which must be either Third or Fourth gear. The VCM/PCM default action is Second gear only.

The final code is Code PO751 (1-2 Shift Solenoid Valve-performance). Code PO751 is set when the VCM/PCM detects First or Second gear at high speed. The VCM/PCM default action is Second near only.