GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Pontiac 🢒 2002 🢒 Sunfire 🢒 Body and Accessories 🢒 Body Control System 🢒 DTC B1382
Table 1: Device Power Moding

Circuit Description

The body control module (BCM) receives accessory voltage from the ignition switch through the BCM fuse when the ignition switch is in the accessory or run position.

Conditions for Running the DTC
    • The engine is running or the ignition 1 input is active for at least 30 seconds.
    • Voltage supplied to the BCM is in the normal operating range, approximately 9-16 volts.

Conditions for Clearing the DTC
    • A current DTC B1382 clears when the code setting condition is no longer present.
    • A history DTC clears when the module ignition cycle counter reaches the reset threshold, without a repeat of the malfunction.

Action Taken When the DTC Sets

DTC B1382 is stored in the BCM memory.

Conditions for Setting the DTC

The BCM does not detect the accessory input after 30 seconds.

Diagnostic Aids

If the DTC is a history DTC, the problem may be intermittent. Perform the tests shown while wiggling the wiring and connectors. This can often cause the malfunction to appear.

Device Power Moding

Key Position

Accessory

Ign. 1

UNLOCK

Inactive

Inactive

RUN

Active

Active

CRANK

Inactive

Active

ACCY

Active

Inactive

OFF

Inactive

Inactive

Test Description

The numbers listed below refer to the numbers on the diagnostic table.

  1. This step determines if the accessory input is shorted to ground.

    2.

  2. This step determines if the BCM is internally shorted.

    3.

  3. This step determines if voltage is supplied from the battery to the BCM fuse.

Step

Action

Yes

No

Connector End View Reference: Master Electrical Component List in Wiring Systems

1

Did you perform theDiagnostic System Check for the system exhibiting the symptom?

Go to Step2

Go to Control Module References for the applicable Diagnostic System Check

2
  1. Install the scan tool.
  2. Turn ON the ignition, with the engine OFF.
  3. With the scan tool, observe the ACCESSORY input parameter in the BCM data list.

Does the scan tool display ON?

Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems

Go to Step 3

3

Inspectthe BCM fuse.

Is the fuse open?

Go to Step 4

Go to Step 6

4

  1. Connect a test lamp between the BCM fuse terminals at the iInstrument panel (I/P) fuse block.
  2. Turn ON the ignition, with the engine OFF.

Does the test lamp illuminate?

Go to Step 5

Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems

5

  1. Turn OFF the ignition.
  2. Disconnect the BCM connector C2.
  3. Turn ON the ignition, with the engine OFF.

Does the test lamp still illuminate?

Go to Step 8

Go to Step 10

6

  1. Remove the BCM fuse.
  2. Turn ON the ignition, with the engine OFF.
  3. Probe both fuse terminals for the accessory circuit at the I/P fuse block with a test lamp connected to ground.

Does the test lamp illuminate for one of the terminals?

Go to Step 7

Go to Step 9

7

Test the accessory input circuitfor an open. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 12

Go to Step 10

8

Repair the short to ground in the accessory input circuit.Refer to Wiring Repairs in Wiring Systems.

Did you complete the action?

Go to Step 12

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9

Repair the open in the ignition feed circuit to the BCM fuse. Refer to Wiring Repairs in Wiring Systems.

Did you complete the action?

Go to Step 12

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10

Inspect for poor connections at the harness connector of the BCM. 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 12

Go to Step 11

11

Important: Perform the setup procedure for the body control module. Refer to Body Control Module (BCM) Programming/RPO Configuration .

Replace the body control module. Refer to Body Control Module Replacement .

Did you complete the replacement?

Go to Step 12

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12
  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

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