Diagnostic Instructions
DTC Descriptors
DTC P1831: Pressure Control (PC)/Shift Lock Solenoid Control Circuit Low Voltage
DTC P1832: Pressure Control (PC)/Shift Lock Solenoid Control Circuit High Voltage
Circuit/System Description
The transmission control module (TCM) high side driver 2 is located inside of the control solenoid (w/body and TCM) valve assembly and has no seviceable parts. The high side driver 2 provides the voltage for the TCM pressure control
solenoids and shift solenoids. This fault is handled inside the TCM and no external circuits are involved.
Conditions for Running the DTC
P1831
| • | The engine speed is greater than 500 RPM. |
| • | Ignition voltage is between 8-18 volts. |
| • | High side driver 2 is enabled. |
| • | DTC P1831 has not failed this ignition. |
P1832
DTC P1832 has not failed this ignition.
Conditions for Setting the DTC
P1831
The TCM detects an internal open or short to ground in the high side driver 2 for 3 out of 5 seconds.
P1832
The TCM detects an internal short to voltage on the high side driver 2 circuit for 3 out of 5 seconds.
Action Taken When the DTC Sets
P1831
| • | DTC P1831 is a Type A DTC. |
| • | The TCM turns OFF all high side drivers. |
| • | The TCM turns OFF all solenoids. |
| • | The TCM commands maximum line pressure. |
| • | The TCM freezes transmission adaptive functions. |
| • | The TCM commands the TCC OFF. |
| • | The TCM allows the vehicle to operate in transmission protection mode. |
P1832
DTC P1832 is a Type C DTC.
Conditions for Clearing the DTC
| • | DTC P1831 is a Type A DTC. |
| • | DTC P1832 is a Type C DTC. |
Reference Information
Schematic Reference
Automatic Transmission Controls Schematics
Connector End View Reference
Component Connector End Views
Electrical Information Reference
Description and Operation
Electronic Component Description
DTC Type Reference
Powertrain Diagnostic Trouble Code (DTC) Type Definitions
Scan Tool Reference
Control Module References
for scan tool information
Circuit/System Testing
- Clear the DTC and operate the vehicle under the conditions for running and setting the DTC.
- Observe the High Side Driver CKT Status parameter. The parameter should display OK.
| ⇒ | If the parameter displays Open, Short to Ground, Short to Voltage, or the DTC resets, replace the control solenoid (w/body and TCM) valve assembly. Refer to
Control Module References
for replacement, setup,
and programming. |
Repair Instructions
Perform the
Diagnostic Repair Verification
after completing the diagnostic procedure.
| • | Control solenoid (w/body and TCM) valve assembly replacement. Refer to
Control Module References
for replacement, setup, and programming. |
