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

1. Install a scan tool.
2. Turn ON the ignition, with the engine OFF.
3. With the scan tool, observe the Ignition 1 parameter in the instrument panel cluster (IPC) Inputs data list.

Does the Ignition 1 parameter display On?

Go to Step 3

Go to Step 12

1. Press and release each of the driver information center (DIC) buttons individually.
2. With the scan tool, observe the DIC switch parameters in the IPC Inputs data list.

Do the DIC switch parameters display On when each button is pressed and Off when each button is released?

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

Go to Step 4

Do the DIC switch parameters display Off when all of the following DIC buttons are pressed?

Go to Step 11

Go to Step 5

Do the DIC switch parameters display Off when all of the following DIC buttons are pressed?

Go to Step 11

Go to Step 6

Does the DIC switch parameter always display Off for the suspected button?

Go to Step 8

Go to Step 7

1. Turn OFF the ignition.
2. Disconnect the DIC switch.
3. Turn ON the ignition, with the engine OFF.
4. With the scan tool, observe the suspected DIC switch parameter.

Does the suspected DIC switch parameter display On for the suspected switch?

Go to Step 9

Go to Step 13

1. Turn OFF the ignition.
2. Disconnect the DIC switch.
3. Connect a 3-ampere fused jumper between the signal circuit of the suspected DIC switch and a good ground. Refer to Circuit Testing in Wiring Systems.
4. Turn ON the ignition, with the engine OFF.
5. With the scan tool, observe the suspected DIC switch parameter.

Does the suspected DIC switch parameter display On for the suspected switch?

Go to Step 13

Go to Step 10

Test the signal circuit of the suspected DIC switch for a short to ground. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 17

Go to Step 14

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

Did you find and correct the condition?

Go to Step 17

Go to Step 14

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

Did you find and correct the condition?

Go to Step 17

Go to Step 13

Test the ignition 1 voltage circuit for an open. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 17

Go to Step 14

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 17

Go to Step 15

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 17

Go to Step 16

Replace the DIC switch. Refer to Control Module References in Computer/Integrating Systems for replacement, setup, and programming.

Did you complete the replacement?

Go to Step 17

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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 17

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Operate the system in order to verify the repair.

Did you correct the condition?

System OK

Go to Step 2