GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Pontiac 🢒 2003 🢒 Bonneville 🢒 Suspension 🢒 Tire Pressure Monitoring 🢒 Driver Information Center (DIC) Switch Inoperative

Test Description

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

  1. If the fuse in the jumper opens when you perform this test, the signal circuit is shorted to voltage.

Step

Action

Yes

No

Schematic Reference: Instrument Cluster Schematics

DEFINITION: One or more DIC switches are inoperative.

1

Did you perform the Instrument Cluster Diagnostic System Check?

Go to Step 2

Go to Diagnostic System Check - Instrument Cluster

2
  1. Install a scan tool.
  2. Turn ON the ignition, with the engine OFF.
  3. Press each driver information center (DIC) switch one at a time.
  4. With a scan tool, observe the following DIC switch parameters in the IPC data list:
    5. • DIC Mode Button (U50)
    • DIC Reset Button (U50)
    • DIC Select Button (U50)
    • English/Metric Switch (U50, U2F)
    • Tire Reset Switch (U2F)
    • Trip Reset Switch (U50, U2F)

Does the scan tool display On or Active when each switch is pressed?

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

Go to Step 3

3

Does the scan display On or Active when any switch is pressed?

Go to Step 4

Go to Step 6

4

  1. Turn OFF the ignition.
  2. Disconnect the DIC switch.
  3. Connect a 3-amp fused jumper wire between the signal circuit of the suspect DIC switch and a good ground.
  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 On or Active?

Go to Step 7

Go to Step 5

5

Test the signal circuit of the suspect DIC switch for an open, a high resistance, or a short to voltage. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 11

Go to Step 8

6

Test the ground circuit of the DIC switch for a high resistance or an open. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 11

Go to Step 7

7

Inspect for poor connections at the harness connector of the DIC switch. 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 11

Go to Step 9

8

Inspect for poor connections at the harness connector of the IPC. 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 11

Go to Step 10

9

Replace the DIC switch. Refer to Driver Information Display Switch Replacement .

Did you complete the replacement?

Go to Step 11

--

10

Replace the IPC. Refer to Instrument Cluster Replacement .

Did you complete the replacement?

Go to Step 11

--

11

Operate the system in order to verify the repair.

Did you correct the condition?

System OK

Go to Step 2