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 | 1 | 1 | B3567 01 | B3567 59 |
DIC Select Switch Signal | 1 | 1 | 1 | B3567 59 |
DIC Switch Low Reference | -- | 1 | -- | -- |
DIC Switch Ground | -- | 1 | -- | -- |
1. Driver Information Center (DIC) Switch Inoperative | ||||
Circuit/System Description
The driver information switches are normally open momentary switches. Power is provided to the driver information center (DIC) switches via the instrument panel cluster (IPC). The IPC interfaces with the DIC switches via 3 discreet circuits. 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(es) is pressed. The switch input to the cluster is set up in a resistor ladder format for three of the four switches. The DIC switches include the PERSONALIZATION, SET/RESET, TRIP/FUEL, AND VEHICLE INFO switches. A stuck switch or a short to battery sets a DTC.
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 DIC switch assembly.
- Ignition OFF, test for less than 1 ohm between the low reference terminal 2 and ground.
- Ignition OFF, test for less than 5 ohms between the ground circuit terminal 5 and ground.
- Ignition ON, verify that all of the scan tool DIC Switch parameters are Inactive.
- Ignition ON, install a 3A fused jumper wire between the signal circuit terminal 1 and the low reference circuit terminal 2. Verify the scan tool DIC Switch parameters, except the DIC Fuel Info. parameter, are Active.
- Ignition ON, install a 3A fused jumper wire between the signal circuit terminal 3 and ground. Verify the scan tool DIC Fuel Info. parameter is Active.
- If all the circuits test normal, test or replace the DIC switch assembly.
| ⇒ | If greater than the specified range, test the low reference circuit for an open/high resistance. |
| ⇒ | If greater than the specified range, test the ground circuit for an open/high resistance. |
| ⇒ | If any are not Inactive, test the signal circuit terminal listed below for a short to ground. If the circuit tests normal, replace the IPC. |
| • | DIC Switch Signal Terminal 1 |
| • | DIC Select Switch Signal Terminal 3 |
| ⇒ | 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. |
| ⇒ | If not Active, test the signal circuit for a short to voltage or and 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 IPC replacement, setup, and programming |
