B1512

CIRCUIT DESCRIPTION
The driver information center (DIC) contains six switch circuits that allow instrument panel cluster (IPC) functions to be performed. The IPC detects which DIC switch is pressed by monitoring the voltage level on each DIC switch circuit.

CONDITIONS FOR SETTING THE DTC
^ The IPC detects a low voltage level in the DIC switch signal circuit.
^ The above condition must be present for at least 60 seconds.

ACTION TAKEN WHEN THE DTC SETS
The IPC stores a DTC.
^ B1512 (FUEL DIC Switch)
^ B1517 (GAGES DIC Switch)
^ B1522 (TRIP DIC Switch)
^ B1527 (OPTIONS DIC Switch)
^ B1532 (E/M DIC Switch)
^ B1537 (RESET DIC Switch)

CONDITIONS FOR CLEARING THE DTC
^ The IPC does not detect a low voltage level in the DIC switch signal circuit.
^ A history DTC will clear after 50 consecutive ignition cycles if the condition for the malfunction is no longer present.
^ The code is cleared using on-board diagnostics.
^ The IPC receives a clear code command from the scan tool.

DIAGNOSTIC AIDS
^ The following conditions may cause an intermittent malfunction to occur:
- An intermittent short to ground in the DIC switch signal circuit.
- An internal short to ground in the DIC switch.
- The DIC switch is pressed for longer than 60 seconds.
^ If a DIC switch is pressed for longer than 60 seconds, a DTC may set with no malfunctions present. Always verify that this condition did not occur before diagnosing a DTC.
^ For intermittents and poor connections refer to Testing for Intermittent and Poor Connections in Diagnostic Aids.

TEST DESCRIPTION

Steps 1-10:

The number(s) below refer to the step number(s) on the diagnostic table.
2. Tests for the normal state of the DIC switch using a scan tool. The scan tool will display the normal state as INACTIVE and ACTIVE when the switch is activated.
3. Tests if the IPC is able to detect a change in DIC switch. The scan tool will display the normal state as INACTIVE, and ACTIVE when the switch is activated.
4. Tests for a stuck or shorted DIC switch. If the DIC switch is stuck or shorted, the state will change from ACTIVE to INACTIVE when the DIC switch is disconnected.