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. |
