C0273
DTC C0271-C0273 EBCM MalfunctionCircuit 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 the DTC.
Action Taken When the DTC Sets
- The ABS indicator lamp is turned on
- The ABS is disabled
DTCs C0271 and C0272 are Permanent Latched DTCs, which indicates that the above actions remain true until the DTC is cleared using a scan tool DTC C0273 Ignition latched, which indicates that the above actions remain true until the ignition switch is turned to OFF (even if the cause of the DTC is intermittent).
DTCs C0271 through C0273 are DRP Critical DTCs, which means that DRP is disabled and the BRAKE indicator lamp will also light
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.
Test Description
Steps 1 - 4:
The numbers below refer to the steps in the diagnostic table:
2. This step checks if the EBCM will Clear DTCs.
3. This step checks if the DTC was set previously.