GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Cadillac 🢒 2003 🢒 CTS - RHD 🢒 Body and Accessories 🢒 Body Rear End 🢒 DTC B2732

Circuit Description

The trunk release switch provides a ground input to the RIM when the switch is closed. This input allows the RIM to detect when a key release switch request is received.

Conditions for Running the DTC

The RIM detects a fault on the circuit for more than 60 seconds.

Action Taken When the DTC Sets

The RIM stores DTC B2732 in memory.

Conditions for Clearing the DTC
    • The RIM no longer detects a fault on the signal circuit for the liftgate release switch.
    • A history DTC will clear after 100 consecutive ignition cycles if the malfunction no longer exists.
    • A scan tool can be used to clear history and current DTCs.

Diagnostic Aids

The cause of the malfunction could be intermittent. Refer to Testing for Intermittent Conditions and Poor Connections in Wiring Systems.

Step

Action

Yes

No

1

Did you perform the Body Rear End Diagnostic System Check?

Go to Step 2

Go to Diagnostic System Check - Body Rear End

2
  1. Install a scan tool.
  2. Turn ON the ignition, with the engine OFF.
  3. With a scan tool, observe the rear release switch parameter in the RIM data list.

Does the scan tool display Inactive?

Go to Step 3

Go to Step 4

3
  1. Activate the liftgate release switch.
  2. With the scan tool, observe the rear release switch parameter.

Does the rear release switch parameter change state?

Go to Diagnostic Aids

Go to Step 4

4
  1. Turn OFF the ignition.
  2. Disconnect the liftgate release switch.
  3. Turn ON the ignition, with the engine OFF.
  4. With a scan tool, observe the rear release switch parameter.

Does the scan tool display inactive?

Go to Step 7

Go to Step 5

5

Test the signal circuit of the rear release switch for a short to ground. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 10

Go to Step 6

6

Inspect for poor connections at the harness connector of the RIM. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 10

Go to Step 8

7

Inspect for poor connections at the harness connector of the trunk release switch. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 10

Go to Step 9

8

Important: Perform the set up procedure for the RIM.

Replace the Rear Integration Module (RIM). Refer to Rear Integration Body Control Module Replacement in Body Control Systems.

Did you complete the replacement?

Go to Step 10

--

9

Replace the trunk release switch.

Did you complete the replacement?

Go to Step 10

--

10
  1. Use the scan tool in order to clear the DTCs.
  2. Operate the vehicle within the Conditions for Running the DTC as specified in the supporting text.

Does the DTC reset?

Go to Step 2

System OK