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 |
|---|---|---|---|
DIC information Down Switch Signal | 1 | 1 | 1 |
DIC information Up Switch Signal | 1 | 1 | 1 |
DIC Options Switch Signal | 1 | 1 | 1 |
DIC Reset Switch Signal | 1 | 1 | 1 |
DIC Switch Ground Reference | -- | 1 | 1 |
1. Driver Information Center (DIC) Switch Malfunction | |||
Circuit/System Description
The driver information center (DIC) switch is a multiplexed momentary contact switch that functions as a DIC/dimmer switch. Battery power is provided to the DIC switch via the instrument panel cluster (IPC). The IPC provides the DIC switch with a ground. The switch input to the cluster is pulled low when a switch is activated. The IPC determines the switch pressed by monitoring the signal circuit voltage.
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 References for scan tool information.
Circuit/System Verification
Ignition ON, verify that when the DIC switches are pressed and released the DIC 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-amp fused jumper wire between the DIC switch signal circuit terminals listed below and the ground circuit terminal 7. 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 an open/high resistance. |
| ⇒ | If any are not Inactive, test the signal circuit terminals listed below for a short to ground. If the circuit tests normal, replace the IPC. |
| • | Information Down Switch Signal Circuit Terminal 3 |
| • | Information Up Switch Signal Circuit Terminal 1 |
| • | Options Switch Signal Circuit Terminal 5 |
| • | Reset Switch Signal Terminal 6 |
| • | Information Down Switch Signal Circuit Terminal 3 |
| • | Information Up Switch Signal Circuit Terminal 1 |
| • | Options Switch Signal Circuit Terminal 5 |
| • | Reset Switch Signal Terminal 6 |
| ⇒ | If any are 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 |
