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Home >> Buick >> 2007 >> Lucerne CX >> Repair and Diagnosis >> External Pages >> Different car >> Section 177 (Instrument Panel System Displays, Gauges And Console) >> Diagnostic Information and Procedures >> Driver Information Center (DIC) Switch(es) Inoperative

Driver Information Center (DIC) Switch(es) Inoperative

WARNING: This page is about a different car, the 2006 Pontiac Montana SV6, 2006 Chevrolet Uplander, and 2006 Buick Terraza. However, it is still accessible from the selected car via links, so may be relevant.
Driver Information Center (DIC) Switch(es) Inoperative

Step Action Yes No
Schematic Reference: Instrument Cluster Schematics 
Connector End View Reference: Instrument Panel, Gages and Console Connector End Views 
1 Did you perform the Diagnostic System Check - Vehicle? Go to Step 2  Go to Diagnostic System Check - Vehicle
2
  1. Install a scan tool.
  2. Turn ON the ignition, with the engine OFF.
  3. Press and release each of the driver information center (DIC) switches.
  4. With a scan tool, observe the DIC Switch parameters in the instrument panel cluster (IPC) data list.
Does the scan tool display Active when each switch is pressed and Inactive when each switch is released?		 Go to Testing for Intermittent Conditions and Poor Connections Go to Step 3 
3 Does the scan tool display Inactive when each switch is pressed? Go to Step 9  Go to Step 4 
4 Does the scan tool always display Active for the suspect switch even when the switch is released? Go to Step 5  Go to Step 6 
5
  1. Turn OFF the ignition.
  2. Disconnect the DIC switch connector.
  3. Turn ON the ignition, with the engine OFF.
  4. With a scan tool, observe the suspect DIC Switch parameter.
Does the scan tool display Active for the suspect switch?		 Go to Step 7  Go to Step 12 
6
  1. Turn OFF the ignition.
  2. Disconnect the DIC switch assembly connector.
  3. Connect a 3-amp fused jumper wire between the signal circuit of the suspect DIC switch and a good ground. Refer to Circuit Testing .
  4. Turn ON the ignition, with the engine OFF.
  5. With a scan tool, observe the suspect DIC Switch parameter.
Does the scan tool display Active for the suspect switch?		 Go to Step 10  Go to Step 8 
7 Test the signal circuit of the suspect DIC switch for a short to ground. Refer to Circuit Testing and Wiring Repairs .
Did you find and correct the condition?		 Go to Step 14  Go to Step 11 
8 Test the signal circuit of the suspect DIC switch for an open or high resistance. Refer to Circuit Testing and Wiring Repairs .
Did you find and correct the condition?		 Go to Step 14  Go to Step 11 
9 Test the ground circuit of the DIC switch assembly for an open or high resistance. Refer to Circuit Testing and Wiring Repairs .
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 assembly. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs .
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 IPC. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs .
Did you find and correct the condition?		 Go to Step 14  Go to Step 13 
12 Replace the DIC switch assembly. Refer to Accessory Trim Plate, Driver Information Display Switch Replacement - Instrument Panel .
Did you complete the replacement?		 Go to Step 14  -
13 Replace the IPC. Refer to Control Module References 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 
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