For 1990-2009 cars

### Circuit Description

The transaxle control module (TCM) contains two high side drivers to control the power side of the pressure control solenoid and the shift/torque converter clutch solenoids. When the key is in the RUN position, the TCM switches power onto the solenoids. If the TCM detects a continuous Open or Short to Ground in the shift/torque converter clutch solenoid driver circuit, DTC P1831 sets.

### Conditions for Setting the DTC

DTC P1831 will set if the TCM detects a continuous open or short to ground in the pressure control solenoid driver circuit when:

• | Engine speed greater than 500 rpm and not at fuel cutoff

• | System voltage between 8 and 18 volts

• | Shift/torque converter clutch driver commanded On

DTC P1831 is a type A DTC.

### Diagnostic Aids

• | The high side drivers are internal to the TCM and cannot be serviced. The only repair possible is to replace the TCM.

• | If a pressure control solenoid DTC is set, replace TCM first. Check to see if code resets.