DTC P1832. Chevrolet Caprice WM 2009

For 1990-2009 cars only

Makes 🢒 Chevrolet 🢒 2009 🢒 Caprice WM 🢒 Transmission 🢒 Automatic Transmission - 5L40-E/5L50-E 🢒 DTC P1832

Diagnostic Instructions

•	Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.

•	Review Strategy Based Diagnosis for an overview of the diagnostic approach.

•	Diagnostic Procedure Instructions provides an overview of each diagnostic category

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 make sure 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).

•	SERVICE VEHICLE SOON displays on the driver information centre (DIC).

•	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

Did you perform the Diagnostic System Check - Vehicle?

Go to Step 2

Go to Diagnostic System Check - Vehicle

Install a scan tool.
Turn ON the ignition with the engine OFF.

Important:

•	Before clearing the DTC, use the scan tool in order to record the ECM and the TCM Failure Records. Using the Clear Info function erases the Failure Records from the ECM and TCM.

•	Using the Clear Info function erases stored DTCs in both the ECM and TCM.

Record the DTC Freeze Frame and Failure Records.
Clear the DTC.
Turn OFF the ignition for at least 30 seconds.
Turn ON the ignition, with the engine OFF.

Did DTC P1832 reset?

Go to Step 3

Go to Testing for Intermittent Conditions and Poor Connections

Turn OFF the ignition.
Disconnect the TCM.
Turn ON the ignition with the engine OFF.
Measure the voltage at the HSD1 circuit of the TCM harness connector. Refer to Component Connector End Views and Circuit Testing.

Is the voltage greater than the specified value?

6.4 volts

Go to Step 4

Go to Step 5

Repair the short to voltage on the HSD1 circuit. Refer to Wiring Repairs .

Is the action complete?

Go to Step 6

Replace the TCM.

Refer to Control Module References for replacement, set-up and programming.

Is the action complete?

Go to Step 6

Perform the following procedure in order to verify the repair: