Diagnostic Aids

WARNING: This page is about a different car, the 2007 Saturn Vue. However, it is still accessible from the selected car via links, so may be relevant.

If the DTC is a history DTC, the malfunction may be intermittent. Refer to Testing for Intermittent Conditions and Poor Connections .

DTC B2627

Step	Action	Yes	No
Schematic Reference: Interior Lights Dimming Schematics
1	Did you perform the Diagnostic System Check - Vehicle?	Go to Step 2	Go to Diagnostic System Check - Vehicle
2	Turn the ignition switch to the ON position. Turn the headlamp switch to the ON position. Attempt to adjust the lighting intensity of the instrument lamps with the dimmer switch. Do the instrument panel lamps vary with dimmer control?	Go to Testing for Intermittent Conditions and Poor Connections	Go to Step 3
3	Is DTC B2622 or B2623 set?	Go to DTC B2622 or DTC B2623	Go to Step 4
4	Test for an open, high resistance, or short to ground on the instrument panel (I/P) lamps supply voltage circuit. Refer to Circuit Testing and Wiring Repairs . Did you find and correct the condition?	Go to Step 7	Go to Step 5
5	Inspect for poor connections at the harness connector of the body control module (BCM). Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs . Did you find and correct the condition?	Go to Step 7	Go to Step 6
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 as specified in the supporting text. Does the DTC reset?	Go to Step 2	System OK