Circuit 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 is monitored by the HUD module. The DIC switch is a momentary contact switch that connects a series of resistors. 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 state by the voltage drop across the resistors. The IPC sets DTC B3567 when it detects a stuck DIC switch or when the DIC signal circuit is shorted to battery.
DTC Descriptors
This diagnostic procedure supports the following DTC:
DTC B3567 Driver Information Center (DIC) Select Switch Circuit
This vehicle has a DTC which includes DTC Symptoms. For more information on DTC symptoms, refer to DTC Symptom Description .
DTC Symptom | DTC Symptom Descriptor |
|---|---|
01 | Short to Battery |
07 | Component Protection Time-Out |
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. The IPC sets DTC B3567.
Conditions for Clearing the DTC
| • | The DTC becomes history when the fault is no longer present. |
| • | The IPC receives a clear code command from the scan tool. |
| • | A History DTC clears after 40 malfunction-free ignition cycles. |
Diagnostic Aids
| • | When the Info Up, Info Down, Info Reset, or English/Metric switch is stuck, only the Trip A/B switch functions correctly. When the Trip A/B switch is stuck, all other DIC switches function correctly. |
| • | Only the DIC signal circuit can be diagnosed as shorted to battery. |
Step | Action | Yes | No | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Schematic Reference: Instrument Cluster Schematics Connector End View Reference: Instrument Panel, Gages, and Console Connector End Views or Inline Harness Connector End Views | |||||||||||||
1 | Did you perform the Diagnostic System Check - Vehicle? | Go to Step 2 | |||||||||||
2 |
Does the scan tool display Active when each switch is pressed and Inactive when each switch is released? | Go to Diagnostic Aids | Go to Step 3 | ||||||||||
3 |
Does the test lamp illuminate? | Go to Step 4 | Go to Step 5 | ||||||||||
4 | Test the DIC switch signal circuit for a short to battery voltage. Refer to Circuit Testing and Wiring Repairs . Did you find and correct the condition? | Go to Step 9 | Go to Step 6 | ||||||||||
5 | Inspect for poor connections at the harness connector of the DIC switch. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs . Did you find and correct the condition? | Go to Step 9 | Go to Step 7 | ||||||||||
6 | Inspect for poor connections at the harness connector of the IPC. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs . Did you find and correct the condition? | Go to Step 9 | Go to Step 8 | ||||||||||
7 | Replace the instrument panel (I/P) dimmer switch. Refer to Instrument Panel Lamp Dimmer Switch Replacement . Did you complete the replacement? | Go to Step 9 | -- | ||||||||||
8 | Replace the IPC. Refer to Control Module References for replacement, setup, and programming. Did you complete the replacement? | Go to Step 9 | -- | ||||||||||
9 |
Does the DTC reset? | Go to Step 2 | System OK | ||||||||||
