Circuit Description
The driver information center (DIC) switch is a multiplexed switch that functions as a 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). 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: Component 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 instrument panel cluster (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 | ||||||||||
