STEP 1. Using scan tool (M.U.T.-IIISE), diagnose the CAN bus line.
STEP 2. Using scan tool (M.U.T.-IIISE), check other system DTC.
STEP 3. Check whether the DTC is set again.
STEP 4. Check whether the DTC is set again.
(1) Turn the ignition switch to the "LOCK" (OFF) position.
(2) Turn the ignition switch to the "ON" position.
Is DTC C1807 set?
Replace the hydraulic unit (integrated with ASC-ECU) (Refer to ). The procedure is complete.