Circuit Description
The electronic brake control module (EBCM) monitors the Antilock Brake System (ABS) control system.
DTC Descriptor
This diagnostic procedure supports the following DTC:
DTC C1223 ECU Performance
Conditions for Running the DTC
DTC C1223 can be set anytime the ignition is in the ON position.
Conditions for Setting the DTC
The electronic brake control module (EBCM) detects a fault within the ABS system.
Action Taken When the DTC Sets
| • | The ABS warning indicator turns ON. |
| • | The traction control and vehicle stability control (VSC) is disabled. |
| • | The VSC warning indicator turns ON. |
Conditions for Clearing the DTC
The condition responsible for setting the DTC no longer exists and the scan tool Clear DTCs function is used.
Diagnostic Aids
Thoroughly inspect the wiring and the connectors. An incomplete inspection of the wiring and the connectors may result in a misdiagnosis, causing a part replacement with the reappearance of the malfunction.
The following are possible causes of the malfunction:
| • | An ABS system malfunction |
| • | If an intermittent malfunction exists, refer to Testing for Intermittent Conditions and Poor Connections . |
Step | Action | Yes | No |
|---|---|---|---|
Schematic Reference: Antilock Brake System Schematics Connector End View Reference: Antilock Brake System Connector End Views | |||
1 | Did you perform the Diagnostic System Check - Vehicle? | Go to Step 2 | |
2 |
Does the DTC reset? | Go to Step 2 | |
3 | Are any additional DTCs present in addition to C1223? | Go to Step 4 | |
4 |
Does the DTC reset? | System OK | |
