DTC B2558 Interior Lamp Control Output Short to Battery. Chevrolet Malibu 2000

For 1990-2009 cars only

Makes 🢒 Chevrolet 🢒 2000 🢒 Malibu 🢒 DTC 🢒 DTC B2558 Interior Lamp Control Output Short to Battery

Lighting Systems Components
Interior Lights Schematics

Circuit Description

The interior lamps controlled by the body control module (BCM) consist of the dome lamp and courtesy lamps. Battery voltage for the interior lamps is supplied by the BCM through the inadvertent power relay (internal to the BCM) output (circuit 1732). The interior lamps are controlled by the BCM by grounding circuit 156. If circuit 156 becomes shorted to battery voltage, DTC B2558 sets.

Conditions for Running the DTC

The interior lamps are commanded on by the BCM (door is open).

Conditions for Setting the DTC

•	The interior lamps are commanded on by the BCM.

•	The interior lamp control circuit (156) is shorted to battery positive voltage for .5 second.

Action Taken When the DTC Sets

•	The BCM disables the interior lamp control output for the remainder of the ignition cycle.

•	The SERVICE VEHICLE SOON indicator illuminates.

•	The check gauges chime sounds.

Conditions for Clearing the DTC

•	A current DTC B2558 will clear when the malfunction is no longer present and the ignition switch is cycled.

•	All BCM history codes clear after 100 ignition cycles with no current codes active during the 100 ignition cycles.

Diagnostic Aids

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

Test Description

The number(s) below refer to the step number(s) on the diagnostic table.

The normal state of the INTERIOR LAMP OUTPUT parameter with a door open is ON.

The normal state of the INTERIOR LAMP OUTPUT parameter with all doors closed is OFF.

Step

Action

Yes

Did you perform the Lighting Systems Diagnostic System Check?

Go to Step 2

Go to Diagnostic System Check - Lighting Systems

Open the left front door.
Install a scan tool.
Turn ON the ignition, with the engine OFF.
With a scan tool, observe the INTERIOR LAMP OUTPUT parameter in the LAMP STATUS data list.

Does the scan tool display ON?

Go to Step 3

Go to Step 4

Close the left front door.
With the scan tool, observe the INTERIOR LAMP OUTPUT parameter.

Does the INTERIOR LAMP OUTPUT parameter change state?

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

Go to Step 4

Ensure that the left front door is open.
Turn OFF the ignition.
Disconnect the following components:

•

Dome lamp

•	Left and right courtesy lamps

Turn ON the ignition, with the engine OFF.
With a scan tool, observe the INTERIOR LAMP OUTPUT parameter.

Does the scan tool display ON?

Go to Step 7

Go to Step 5

Test the signal circuit of the interior lamps for a short to battery. 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

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 10

Go to Step 8

Inspect for poor connections at the harness connectors of the interior lamps. 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

Replace the BCM. Refer to Body Control Module Replacement in Body Control System.

Important: Perform the set up procedure for the BCM. Refer to Body Control Module (BCM) Programming/RPO Configuration .

Did you complete the replacement?

Go to Step 10

Replace the appropriate interior lamp or connector.

Did you complete the replacement?

Go to Step 10

Use the scan tool in order to clear the DTCs.
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