Driver Information Center (DIC) Switch Inoperative. Buick Century 2005

For 1990-2009 cars only

Makes 🢒 Buick 🢒 2005 🢒 Century 🢒 Vehicle Control Systems 🢒 Vehicle DTC Information 🢒 Driver Information Center (DIC) Switch Inoperative

Step	Action	Yes	No
Schematic Reference: Instrument Cluster Schematics
1	Did you perform the Diagnostic System Check - Vehicle?	Go to Step 2	Go to Diagnostic System Check - Vehicle in Vehicle DTC Information
2	Install a scan tool. Turn ON the ignition, with the engine OFF. Press and release each of the driver information center (DIC) switches. With the scan tool, observe the DIC switch parameters in the IPC Data list. Does the scan tool display On when each switch is pressed and Off when each switch is released?	Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems	Go to Step 3
3	Does the scan tool display Off when each switch is pressed?	Go to Step 9	Go to Step 4
4	Does the scan tool always display On for the suspected switch?	Go to Step 5	Go to Step 6
5	Turn the ignition OFF. Disconnect the DIC switch. Turn the ignition ON, with the engine OFF. With the scan tool, observe the suspected DIC switch parameter. Does the scan tool display On for the suspected switch?	Go to Step 7	Go to Step 12
6	Turn the ignition OFF. Disconnect the DIC switch. Connect a 3-amp fused jumper between the signal circuit of the suspected DIC switch and a good ground. Refer to Circuit Testing in Wiring Systems. Turn the ignition ON, with the engine OFF. With the scan tool, observe the suspected DIC switch parameter. Does the scan tool display On for the suspected switch?	Go to Step 10	Go to Step 8
7	Test the signal circuit of the suspected DIC switch for a short to ground. Refer to Circuit Testing and to Wiring Repairs in Wiring Systems. Did you find and correct the condition?	Go to Step 14	Go to Step 11
8	Test the signal circuit of the suspected DIC switch for an open, a short to battery voltage, or for a high resistance. Refer to Circuit Testing and to Wiring Repairs in Wiring Systems. Did you find and correct the condition?	Go to Step 14	Go to Step 11
9	Test the ground circuit of the DIC switch for an open or for a high resistance. Refer to Circuit Testing and to Wiring Repairs in Wiring Systems. Did you find and correct the condition?	Go to Step 14	Go to Step 10
10	Inspect for poor connections at the harness connector of the DIC switch. Refer to Testing for Intermittent Conditions and Poor Connections and to Connector Repairs in Wiring Systems. Did you find and correct the condition?	Go to Step 14	Go to Step 12
11	Inspect for poor connections at the harness connector of the instrument cluster (IPC). Refer to Testing for Intermittent Conditions and Poor Connections and to Connector Repairs in Wiring Systems. Did you find and correct the condition?	Go to Step 14	Go to Step 13
12	Replace the DIC switch. Refer to Driver Information Display Switch Replacement . Did you complete the replacement?	Go to Step 14	--
13	Replace the IPC. Refer to Control Module References in Computer/Integrating Systems for replacement, setup, and programming. Did you complete the replacement?	Go to Step 14	--
14	Operate the system in order to verify the repair. Did you correct the condition?	System OK	Go to Step 2