Circuit/System Verification

NOTE:

Since most occurrences of this DTC are caused by excessive brake usage, review with the customer the conditions under which the DTC set.

Allow the brakes to cool down before performing test.
Verify that no other DTCs are set.
- If any other DTCs are set
  Refer to Diagnostic Trouble Code (DTC) List - Vehicle .
- Go to next step: If no other DTCs are set
Verify DTC C027C does not set while driving the vehicle under normal braking conditions. Refer to Brake System Vehicle Road Test .
- If the DTC sets
  Replace the K17 Electronic Brake Control Module.
- Go to next step: If the DTC does not set
All OK.