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 pressure control solenoid
driver circuit, DTC P1831 sets.
DTC Parameters
DTC P1831 will set if the TCM detects a continuous open or short to ground in
the pressure control solenoid driver circuit when:
| - | MY 2002: 200-7,500 RPM for 5 seconds |
| - | MY 2003: 500-6,500 RPM for 5 seconds |
| • | MY 2002: Ignition 1 is 8-10 volts |
| • | Pressure control solenoid high side is 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 this pressure control solenoid DTC is set, replace the TCM first. Check
to see if the code resets. |
