• | 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. |
Circuit | Short to Ground | Open/High Resistance | Short to Voltage | Signal Performance |
---|---|---|---|---|
DIC Switch Signal Circuit | 1 | 1 | B3567 01 | B3567 59 |
DIC Switch Ground Reference Circuit | -- | 1 | -- | -- |
1. Driver Information Center (DIC) Switch(es) Inoperative |
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.
The ignition is in ACCESSORY or RUN.
• | The IPC detects that the DIC switch is stuck. |
• | The IPC detects that the DIC switch signal circuit is shorted to battery. |
The IPC ignores the DIC switch inputs.
• | 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 engine control module (ECM) receives a clear code command from the scan tool. |
• | When the DIC switches are stuck, only the TRIP/FUEL switch functions correctly. When the TRIP/FUEL switch is stuck, all other DIC switches function correctly. |
• | Only the DIC signal circuit can be diagnosed as shorted to battery. |
⇒ | If not Inactive, test both signal circuits of the DIC switch assembly for a short to ground. If the circuits test normal, replace the IPC. |
⇒ | If not Active, test both signal circuits of the DIC switch assembly for a short to voltage. If the circuits test normal, replace the IPC. |
Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
• | Control Module References for the IPC replacement, setup and programming |