For 1990-2009 cars only
Diagnostic Instructions
| • | 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. |
DTC Descriptor
DTC B1365: Device Ignition 0 (UNLOCK, ON and START) CircuitCircuit Description
The instrument panel cluster (IPC) uses the ignition 0 voltage circuit in order to supply voltage to various indicators and gages. The IPC also receives a serial data message from the serial data gateway module (SDGM) indicating the current power mode.
Conditions for Running the DTC
The ignition is ON.
Conditions for Setting the DTC
The ignition 0 voltage circuit is less than 75 percent of battery voltage for more than 1 second.
Action Taken When the DTC Sets
| • | The fuel gage, tachometer and speedometer default to 0. |
| • | The scan tool does not communicate with the instrument cluster. |
Conditions for Clearing the DTC
| • | The current DTC clears when the conditions for setting the DTC are no longer present. |
| • | The history DTC clears after 100 malfunction free ignition cycles. |
Diagnostic Aids
| • | When the instrument cluster detects low voltage at the ignition 0 voltage circuit, the instrument cluster will not communicate with the scan tool, and the fuel gage, tachometer and speedometer default to 0. |
| • | DTC B1365 can only be read by the scan tool as a history code in the IPC once the fault is removed. |
| • | This DTC cannot be retrieved with a current status. Refer to Scan Tool Does Not Communicate with Class 2 Device , for diagnosis of a loss of communication with the instrument cluster. |
| • | An intermittent condition is likely to be caused by an open condition in the ignition 0 voltage circuit. Refer to Scan Tool Does Not Communicate with Class 2 Device , in order to isolate an intermittent condition. |
Reference Information
Schematic Reference
Connector End View Reference
Description and Operation
Instrument Cluster Description and Operation
Electrical Information Reference
| • | Circuit Testing |
| • | Wiring Repairs |
Scan Tool Reference
Control Module References for scan tool information
Repair Instructions
Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
Control Module References for IPC replacement, setup, and programming
