Circuit Description
The EBCM initializes a self-test when the ignition is turned to the RUN position. This internal self-test verifies that all ABS circuitry is operating correctly.
Conditions for Setting the DTC
Any condition within the EBCM which causes a memory error will set this DTC.
Action Taken When the DTC Sets
| • | The ABS indicator lamp is turned on |
| • | The ABS is disabled |
These DTCs are Permanent Latched DTCs, which indicates that the above actions remain true until the DTC is cleared using a Scan Tool .
Conditions for Clearing the DTC
| • | Repair the conditions responsible for setting the DTC |
| • | Use the Scan Tool Clear DTCs function |
Diagnostic Aids
DTCs C0271-C0273 are EBCM internal diagnosis trouble codes. Replace the EBCM if these tests show that the EBCM circuitry has failed. Refer to Electronic Brake Control Module Replacement .
Test Description
The numbers below refer to the steps in the diagnostic table:
-
This step checks if the EBCM will "Clear DTCs".
-
This step checks if the DTC has been set previously.
Step | Action | Value(s) | Yes | No |
|---|---|---|---|---|
1 | Was the Diagnostic System Check performed? | -- | Go to Step 2 | Go to Diagnostic System Check |
Install the Scan Tool and attempt to clear the DTCs. Did the DTCs clear? | -- | Go to Step 3 | Go to Step 4 | |
Check the history DTCs and the data. Was this the first time the DTC has set? | -- | Go to Diagnostic System Check | Go to Step 4 | |
4 | Replace the EBCM. Refer to Electronic Brake Control Module Replacement . Is the repair complete? | -- | Go to Diagnostic System Check | -- |
