GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Buick 🢒 2003 🢒 Rendezvous - AWD 🢒 Body and Accessories 🢒 Body Control System 🢒 DTC B0008

Circuit Description

The body control module (BCM) monitors the Park Neutral Position switch position. The BCM uses the position of the switch to determine when to perform certain body control functions.

Conditions for Setting the DTC

The BCM detects a short to battery in the Park Neutral Position circuit while IGN1 is not active.

Action Taken When the DTC Sets

The BCM stores DTC B0008 in memory.

Conditions for Clearing the DTC
    • A current DTC clears when the malfunction is no longer present.
    • A history DTC clears when the module ignition cycle counter reaches the reset threshold, without a repeat of the malfunction.

Step

Action

Yes

No

Schematic Reference: Body Control System Schematics

1

Preform the Diagnostic System Check for the system exhibiting the symptom. Refer to Control Module References .

Did you perform the Diagnostic System Check?

Go to Step 2

Go to Control Module References

2
  1. Install a scan tool.
  2. Place shift lever in the PARK position.
  3. Turn the ignition switch to OFF.
  4. With a scan tool, monitor the following in Body Control Module, Data Display, Inputs:
    5. • Ignition 1
    • Park/Neutral Switch

Does the scan tool indicate that both inputs are inactive?

Go to Step 3

Go to Step 4

3
  1. Turn the ignition switch ON, with the engine OFF.
  2. With a scan tool, monitor the following in Body Control Module, Data Display, Inputs:
    3. • Ignition 1
    • Park/Neutral Switch

Does the scan tool indicate that both inputs are active?

Go to Step 6

Go to Step 8

4

Probe the Park Neutral Position Switch circuit of the BCM with a test lamp that is connected to a good ground.

Does the test lamp illuminate?

Go to Step 5

Go to Step 6

5

Repair the short to voltage in the Park Neutral Position Switch circuit.

Did you complete the repair?

Go to Step 8

--

6

Inspect for poor connections at the BCM harness connectors. 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 8

Go to Step 7

7

Important: Perform the set up procedure for the BCM.

Replace the BCM. Refer to Body Control Module Replacement .

Did you complete the replacement?

Go to Step 8

--

8
  1. Use the scan tool in order to clear 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