Circuit/System Testing
- Ignition OFF, disconnect the harness connector at the driver information center (DIC) switch.
- Ignition OFF, test for less than 5 ohms between the ground circuit terminal 7 and ground.
- If greater than the specified range, test the ground circuit for an open/high resistance.
- Ignition ON, verify that all scan tool DIC Switch parameters are Inactive.
- If any are not Inactive, test the signal circuit terminals listed below for a short to ground. If the circuit tests normal, replace the IPC.
- Information Down Switch Signal Circuit Terminal 3
- Information Up Switch Signal Circuit Terminal 1
- Options Switch Signal Circuit Terminal 5
- Reset Switch Signal Terminal 6
- Ignition ON, install a 3-amp fused jumper wire between the DIC switch signal circuit terminals listed below and the ground circuit terminal 7. Verify that all scan tool DIC switch parameters are Active.
- Information Down Switch Signal Circuit Terminal 3
- Information Up Switch Signal Circuit Terminal 1
- Options Switch Signal Circuit Terminal 5
- Reset Switch Signal Terminal 6
- 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 all circuits test normal, test or replace the DIC switch.