Circuit Description
WARNING: This page is about a different car, the 2005 Cadillac STS. However, it is still accessible from the selected car via links, so may be relevant.
The 1-2 shift solenoid (SS) valve is a normally-closed exhaust valve that, in conjunction with the 2-3 shift solenoid (SS) valve, allows 4 different shifting combinations. The 1-2 SS valve is attached to the control valve body, within the transmission.
The TCM monitors the actual gear ratio, and compares the actual gear ratio with the commanded gear ratio. DTC P0752 sets under two conditions:
- A stuck OFF 1-2 SS valve
- A stuck OFF 1-2 shift valve
If the TCM detects a 1-1-4-4-5 shift pattern, then DTC P0752 sets. DTC P0752 is a type B DTC.