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 |
DTC Descriptors
DTC B3567 01: Driver Information Center Select Switch Circuit Short to BatteryDTC B3567 59: Driver Information Center Select Switch Circuit/Component Protection Time-Out
Diagnostic Fault Information
Circuit | Short to Ground | Open/High Resistance | Short to Voltage | Signal Performance |
|---|---|---|---|---|
DIC Switch Signal Circuit | 1 | 1 | P3567 | P3567 |
DIC Switch Ground Reference Circuit | -- | 1 | -- | -- |
1. Driver Information Center (DIC) Switch(es) Inoperative | ||||
Circuit/System Description
The driver information center (DIC) switch is a multiplexed switch that functions as a DIC/dimmer switch. The DIC switch is also used for the head-up-display (HUD) if the vehicle is equipped with a HUD. The switch then functions as the HUD/DIC/Dimmer switch. The instrument panel cluster (IPC) only monitors the DIC switch inputs. The dimmer switch is monitored by the instrument panel module (IPM) and the HUD switch inputs is monitored by the HUD module. Battery power is provided to the DIC switch via the instrument panel cluster (IPC). The IPC also provides the DIC switch with a ground reference. The switch input to the IPC is pulled low or grounded when a switch is activated. The DIC switch is a momentary contact switch that connects a series of resistors in a resistor ladder format. The IPC monitors the DIC switch signal circuit to determine the DIC switch inputs. Each switch state - INFO UP, INFO DOWN, INFO RESET, ENGLISH/METRIC, TRIP RESET- corresponds to a certain resistance value. The IPC determines the switch pressed by the voltage drop across the resistors.
The TRIP A/B switch is monitored on a separate circuit provided by the IPC.
Conditions for Running the DTC
The ignition is in ACCESSORY or RUN.
Conditions for Setting the DTC
| • | The IPC detects that the DIC switch is stuck. |
| • | The IPC detects that the DIC switch signal circuit is shorted to battery. |
Action Taken When the DTC Sets
The IPC ignores the DIC switch inputs.
Conditions for Clearing the DTC
| • | The DTC becomes history when the conditions for setting the DTC are no longer present. |
| • | The history DTC clears after 40 malfunction-free warm-up cycles. |
| • | The IPC receives a clear code command from the scan tool. |
Diagnostic Aids
| • | When the TRIP A/B switch is stuck, all other DIC switches will function correctly. When any of the DIC switches are stuck, only the TRIP A/B switch functions correctly. |
| • | Only the DIC switch signal circuit can be diagnosed as shorted to battery. |
Reference Information
Schematic Reference
Connector End View Reference
Electrical Information Reference
Scan Tool Reference
Circuit/System Testing
- Ignition OFF, disconnect the harness connector at the driver information center (DIC) switch assembly.
- Verify a test lamp does not illuminate when connected between the DIC switch signal circuit and ground.
- If all circuits tests normal, test or replace the DIC switch.
| ⇒ | If the test lamp illuminates, check the DIC switch signal circuits for a short to voltage. If all circuits test normal, replace the IPC. |
Repair Instructions
Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
