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Test Description

WARNING: This page is about a different car, the 2004 Chevrolet Corvette. However, it is still accessible from the selected car via links, so may be relevant.

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

  1. 2:  Tests for the normal state of the DIC switch using a scan tool. The scan tool will display the normal state as INACTIVE, and ACTIVE when the switch is activated.
  2. 3:  Tests if the IPC is able to detect a change in DIC switch. The scan tool will display the normal state as INACTIVE, and ACTIVE when the switch is activated.
  3. 4:  Tests for a stuck or shorted DIC switch. If the DIC switch is stuck or shorted, the state will change from ACTIVE to INACTIVE when the DIC switch is disconnected.
DTC B1512-B1537

Step Action Value(s) Yes No
Schematic Reference:  Instrument Cluster Schematics  
1 Did you perform the IPC 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. With a scan tool, observe the suspected DIC Switch parameter in the IPC Inputs data list.
Does the scan tool display INACTIVE?		 - Go to Step 3  Go to Step 4 
3 
  1. Activate the DIC switch.
  2. With the scan tool, observe the DIC Switch parameter in the IPC Inputs data list.
Does the DIC Switch parameter change state?		 - Go to Diagnostic Aids Go to Step 4 
4 
  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 DIC Switch parameter in the IPC Inputs data list.
Does the scan tool display INACTIVE?		 - Go to Step 7  Go to Step 5 
5 Test the signal circuit of the 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 10  Go to Step 6 
6 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 10  Go to Step 8 
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 10  Go to Step 9 
8 Replace the IPC. Refer to Instrument Panel Cluster (IPC) Replacement .
Did you complete the replacement?		 - Go to Step 10  -
9 Replace the DIC switch. Refer to Driver Information Center Switch Replacement .
Did you complete the replacement?		 - Go to Step 10  -
10
  1. Use the scan tool in order to clear the DTCs.
  2. 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
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