Diagnostic Aids

WARNING: This page is about a different car, the 2006 Buick LaCrosse and 2006 Buick Allure. However, it is still accessible from the selected car via links, so may be relevant.

Perform a visual inspection for loose or poor connections at all related components. Refer to Testing for Intermittent Conditions and Poor Connections .

DTC B2610

Step	Action	Yes	No
Schematic Reference: Interior Lights Dimming Schematics Connector End View Reference: Lighting Systems Connector End Views or Computer/Integrating Systems Connector End Views
1	Did you perform the Diagnostic System Check - Vehicle?	Go to Step 2	Go to Diagnostic System Check - Vehicle
2	Disconnect the interior lamp switch. Test the instrument panel (I/P) dimming voltage reference circuit for a short to battery positive voltage or a short to ground. Refer to Circuit Testing and Wiring Repairs . Did you find and correct the condition?	Go to Step 7	Go to Step 3
3	Test the I/P dimming return circuit for a short to battery positive voltage or an open. Refer to Circuit Testing and Wiring Repairs . Did you find and correct the condition?	Go to Step 7	Go to Step 4
4	Disconnect the body control module (BCM) connector C1. Using a DMM set to the ohms setting, probe between the I/P dimming voltage reference circuit and the I/P dimming control circuit. Move the interior lamp switch from FULL DIM to FULL BRIGHT. Does the DMM reading change values?	Go to Step 6	Go to Step 5
5	Replace the lamp switch assembly. Refer to Headlamp Switch Replacement . Did you complete the repair?	Go to Step 7	-
6	Replace the BCM. Refer to Control Module References for replacement, setup and programming. Did you complete the replacement?	Go to Step 7	-
7	Use the scan tool in order to clear the DTCs. Operate the vehicle within the Conditions for Running the DTC. Does the DTC reset?	Go to Step 2	System OK