Diagnostic Instructions
| • | Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure. |
| • | Review Strategy Based Diagnosis for an overview of this diagnostic approach. |
| • | Diagnostic Procedure Instructions provides an overview of each diagnostic category. |
DTC Descriptor
DTC C0898 00: Device Power and Ground CircuitsDiagnostic Fault Information
Circuit | Short to Ground | Open/High Resistance | Short to Voltage | Signal Performance |
|---|---|---|---|---|
Ignition 1 Signal | C0898 00 | C0898 00 | -- | -- |
EBCM Ground | C0898 00 | C0898 00 | -- | -- |
Circuit/System Description
The electronic brake control module (EBCM) monitors the ignition voltage level and ground circuit condition available for system operation. A deep low voltage condition prevents the system from operating properly.
Conditions for Running the DTC
Ignition ON.
Conditions for Setting the DTC
The ignition voltage available to the EBCM is less than 8.25 volts for 100 msec.
Action Taken When the DTC Sets
| • | The traction control system (TCS) and vehicle stability enhancement system (VSES) are disabled for the duration of the ignition cycle |
| • | The Stability System Off and the Traction Control Off indicators turn ON. |
Conditions for Clearing the DTC
| • | The condition for the DTC is no longer present. |
| • | The EBCM clears the history DTC when a current DTC is not detected in 100 consecutive drive cycles. |
Reference Information
Schematic Reference
Antilock Brake System Schematics
Connector End View Reference
Description and Operation
Electrical Information Reference
Scan Tool Reference
Diagnostic Aids
A low voltage or large voltage drop during operation with a DTC in multiple modules indicates a concern in the charging system.
Circuit/System Testing
- Ignition OFF, disconnect the harness connector at the EBCM.
- Test for less than 5 ohms between the ground circuit Connector X1 terminals 12 and 15 and ground.
- Measure and record the voltage at the battery terminals. Observe the scan tool Battery Voltage Signal parameter. Verify that battery terminal voltage and battery voltage signal readings do not differ more than 1 volt.
- Go to Charging System Test .
| ⇒ | If greater than the specified range, test the ground circuits for an open/high resistance. |
| ⇒ | If the difference is more than 1 volt, test the battery positive voltage circuits of the EBCM for an open/high resistance, if the circuit tests normal replace the EBCM. |
Repair Instructions
Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
Control Module References for EBCM replacement, setup and programming
