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 B0931: Compass Sensor Circuit MalfunctionDiagnostic Fault Information
Circuit | Short to Ground | Open/High Resistance | Short to Voltage | Signal Performance |
|---|---|---|---|---|
Ignition 1 Voltage | -- | B0935 | -- | B0931 |
Compass Sensor Feed | B0933 | B0935 | B0934 | B0931 |
Compass Sensor Return | B0933 | B0935 | B0934 | B0931 |
Compass Ground | -- | B0935 | -- | B0931 |
Circuit/System Description
The internal fault detection of the electronic compass module is handled by the instrument panel cluster (IPC). The compass information is sent to the IPC via 2 discreet inputs from the electronic compass module. The IPC displays compass information in the driver information center (DIC). The DIC displays 2 dashes (- -) when the IPC looses connection with the electronic compass module.
Conditions for Running the DTC
The IPC monitors the analog input value at power up.
Conditions for Setting the DTC
When communication with the compass module exists but the IPC does not detect valid data from the electronic compass module or the compass error flag is set.
Action Taken When the DTC Sets
The DTC will be set and stored in non-volatile memory.
Conditions for Clearing the DTC
| • | The DTC becomes history when the IPC no longer detects a failure. |
| • | The history DTC clears after 100 fault-free ignition cycles. |
Reference Information
Schematic Reference
Connector End View Reference
Description and Operation
Driver Information Center (DIC) Description and Operation
Electrical Information Reference
Scan Tool Reference
Control Module References for scan tool information
Circuit/System Verification
- Verify that DTC B0931 is not set.
| ⇒ | If the DTC is set, calibrate the electronic compass module. If the DTC resets, replace the electronic compass module. |
Repair Instructions
Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
| • | Control Module References for the electronic compass module replacement, setup and programming |
