Circuit Description
The transmission control module (TCM) provides voltage to the pressure control solenoid, the shift solenoids, and the TCC PWM solenoid through two separate solid-state devices called High Side Drivers, called HSD1 and HSD2. HSD1 provides electrical power to the pressure control solenoid. HSD2 provides power to the shift solenoids. A normal function of the TCM is to run tests on each driver to ensure that it is functioning properly.
When the TCM detects a short to voltage on HSD1, then DTC P1832 sets. DTC P1832 is a type C DTC.
DTC Descriptor
This diagnostic procedure supports the following DTC:
DTC P1832 Pressure Control (PC)/Shift Lock Solenoid Control Circuit High Voltage
Conditions for Running the DTC
The ignition is ON.
Conditions for Setting the DTC
The TCM detects at least 6.4 volts at the HSD1 terminal prior to commanding the HSD1 ON.
Action Taken When the DTC Sets
| • | The TCM does not request the engine control module (ECM) to illuminate the malfunction indicator lamp (MIL). |
| • | The TCM commands maximum line pressure. |
| • | The TCM freezes transmission adaptive functions. |
| • | The TCM records the operating conditions when the Conditions for Setting the DTC are met. The TCM stores this information as a Failure Record. |
| • | The TCM stores DTC P1832 in TCM history. |
Conditions for Clearing the DTC/DIC
| • | The TCM clears the DIC when the condition no longer exists. |
| • | A scan tool can clear the DTC. |
| • | The TCM clears the DTC from TCM history if the vehicle completes 40 warm-up cycles without a non-emission related diagnostic fault occurring. |
| • | The TCM cancels the DTC default actions when the ignition is OFF long enough in order to power down the TCM. |
Step | Action | Value(s) | Yes | No | ||||
|---|---|---|---|---|---|---|---|---|
1 | Did you perform the Diagnostic System Check - Vehicle? | -- | Go to Step 2 | |||||
2 |
Important:
Did DTC P1832 reset? | -- | Go to Step 3 | Go to Testing for Intermittent Conditions and Poor Connections | ||||
3 |
Is the voltage greater than the specified value? | 6.4 volts | Go to Step 4 | Go to Step 5 | ||||
4 | Repair the short to voltage on the HSD1 circuit. Refer to Wiring Repairs . Is the action complete? | -- | Go to Step 6 | -- | ||||
5 | Replace the TCM. Refer to Control Module References for replacement, setup and programming. Is the action complete? | -- | Go to Step 6 | -- | ||||
6 | Perform the following procedure in order to verify the repair:
Has the test run and passed? | -- | Go to Step 7 | Go to Step 2 | ||||
7 | With the scan tool, observe the stored information, capture info and DTC info. Does the scan tool display any DTCs that you have not diagnosed? | -- | System OK |
Circuit Description
The transmission control module (TCM) provides voltage to the pressure control solenoid, the shift solenoids, and the TCC PWM solenoid through two separate solid-state devices called High Side Drivers, called HSD1 and HSD2. HSD1 provides electrical power to the pressure control solenoid. HSD2 provides power to the shift solenoids. A normal function of the TCM is to run tests on each driver to ensure that it is functioning properly.
When the TCM detects a short to voltage on HSD1, then DTC P1832 sets. DTC P1832 is a type C DTC.
DTC Descriptor
This diagnostic procedure supports the following DTC:
DTC P1832 Pressure Control (PC)/Shift Lock Solenoid Control Circuit High Voltage
Conditions for Running the DTC
The ignition is ON.
Conditions for Setting the DTC
The TCM detects at least 6.4 volts at the HSD1 terminal prior to commanding the HSD1 ON.
Action Taken When the DTC Sets
| • | The TCM does not request the engine control module (ECM) to illuminate the malfunction indicator lamp (MIL). |
| • | The TCM commands maximum line pressure. |
| • | The TCM freezes transmission adaptive functions. |
| • | The TCM records the operating conditions when the Conditions for Setting the DTC are met. The TCM stores this information as a Failure Record. |
| • | The TCM stores DTC P1832 in TCM history. |
Conditions for Clearing the DTC/DIC
| • | The TCM clears the DIC when the condition no longer exists. |
| • | A scan tool can clear the DTC. |
| • | The TCM clears the DTC from TCM history if the vehicle completes 40 warm-up cycles without a non-emission related diagnostic fault occurring. |
| • | The TCM cancels the DTC default actions when the ignition is OFF long enough in order to power down the TCM. |
Step | Action | Value(s) | Yes | No | ||||
|---|---|---|---|---|---|---|---|---|
1 | Did you perform the Diagnostic System Check - Vehicle? | -- | Go to Step 2 | |||||
2 |
Important:
Did DTC P1832 reset? | -- | Go to Step 3 | Go to Testing for Intermittent Conditions and Poor Connections | ||||
3 |
Is the voltage greater than the specified value? | 6.4 volts | Go to Step 4 | Go to Step 5 | ||||
4 | Repair the short to voltage on the HSD1 circuit. Refer to Wiring Repairs . Is the action complete? | -- | Go to Step 6 | -- | ||||
5 | Replace the TCM. Refer to Control Module References for replacement, setup and programming. Is the action complete? | -- | Go to Step 6 | -- | ||||
6 | Perform the following procedure in order to verify the repair:
Has the test run and passed? | -- | Go to Step 7 | Go to Step 2 | ||||
7 | With the scan tool, observe the stored information, capture info and DTC info. Does the scan tool display any DTCs that you have not diagnosed? | -- | System OK |
