Diagnostic Instructions
| • | Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure. |
| • | Review Strategy Based Diagnosis for an overview of the diagnostic approach. |
| • | Diagnostic Procedure Instructions provides an overview of each diagnostic category. |
Diagnostic Fault Information
Circuit | Short to Ground | Open/High Resistance | Short to Voltage | Signal Performance |
|---|---|---|---|---|
DIC Switch Signal Circuit | 1 | 1 | 1 | -- |
DIC Switch Ground Reference Circuit | -- | 1 | 1 | -- |
1. Driver Information Center (DIC) Switch Malfunction | ||||
Circuit/System Description
The driver information center (DIC) switch are normally open momentary switch. The instrument panel cluster (IPC) interfaces with the driver information center (DIC) switch(es) via a discreet circuit. The DIC switch signal circuit is pulled up to battery voltage in the IPC. The switch input to the cluster is pulled low or grounded when a switch is activated. The IPC reads the voltage at the analog input to determine which switch is pressed. The switch input to the cluster is set up in a resistor ladder format. The DIC switch include the INFO and the SET/RESET switches. A simultaneous press and hold of the INFO and SET/RESET switch activates the MENU switch. The MENU switch is the third embedded switch used to activate the various DIC personalization menus.
Reference Information
Schematic Reference
Connector End View Reference
Description and Operation
Driver Information Center (DIC) Description and Operation
Electrical Information Reference
Scan Tool Reference
Control Module Referencesfor scan tool information
Circuit/System Verification
Ignition ON, verify that when the DIC switches are pressed and released the DIC switch scan tool parameters toggle between Active and Inactive.
Circuit/System Testing
- Ignition OFF, disconnect the harness connector at the driver information center (DIC) switch.
- Ignition OFF, test for less than 5 ohms between the ground circuit terminal 7 and ground.
- Ignition ON, verify that all scan tool DIC Switch parameters are Inactive.
- Ignition ON, install a 3-A fused jumper wire between the signal circuit terminal 1 and ground. Verify that all scan tool DIC switch parameters are Active.
- If all circuits test normal, test or replace the DIC switch.
| ⇒ | If greater than the specified range, test the ground circuit for a short to voltage or an open/high resistance. |
| ⇒ | If any DIC switch parameters are not Inactive, test the signal circuit terminal 1 for a short to ground. If the circuit tests normal, replace the instrument panel cluster (IPC). |
| ⇒ | If any is not Active, test the signal circuit for a short to voltage or an open/high resistance. If the circuit tests normal, replace the IPC. |
Repair Instructions
Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
| • | Control Module References for the IPC replacement, setup, and programming |
