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DTC C104B FL inlet valve
DTC C104F FR inlet valve
DTC C1053 RL inlet valve
DTC C1057 RR inlet valve
DTC C105F FL outlet valve
DTC C1063 FR outlet valve
DTC C1067 RL outlet valve
DTC C105B RR outlet valve
DTC C1200 FL-RR cut valve
DTC C1204 FR-RL cut valve
DTC C1208 FL-RR suction valve
DTC C120C FR-RL suction valve
 
 
 
 
caution
  • If there is any problem in the CAN bus lines, an incorrect DTC may be set. Prior to this diagnosis, diagnose the CAN bus lines (Refer to GROUP 54C - CAN Bus Diagnostics Table ).
  • Whenever ECU is replaced, ensure that the CAN bus lines are normal.
OPERATION
  • ASC-ECU contains the power supply circuit (+BV terminal) for the solenoid valve. The solenoid valve is energized by the valve relay, which is incorporated in ASC-ECU.
  • The valve relay, which is incorporated in ASC-ECU, is always energizing the solenoid valve unless the initial check is in progress when the ignition switch is turned on, and the recurrent system check is in progress.
  • ASC-ECU activates the solenoid valve by turning on its driving transistor.
 
 
 
DTC SET CONDITIONS
These DTCs will be set under the cases below:
  • The solenoid valve is not energized even after ASC-ECU has turned on the driving transistor (Open circuit is present in the power supply circuit to the ASC-ECU solenoid valve, or the valve relay has failed).
  • After ASC-ECU has turned off the driving transistor, the solenoid valve still remains energized (short in the solenoid valve circuit).
  • When a solenoid valve failure is detected
 
 
 
TROUBLESHOOTING HINTS
  • ASC-ECU malfunction
 
 
 
 
DIAGNOSIS
STEP 1. Scan tool (M.U.T.-III) CAN bus diagnosis
(1)
cautionTo prevent damage to scan tool (M.U.T.-III), always turn the ignition switch to the "LOCK" (OFF) position before connecting or disconnecting scan tool (M.U.T.-III).
Connect scan tool (M.U.T.-III). Refer to "How to connect the Scan Tool (M.U.T.-III) ."
(2) Turn the ignition switch to the "ON" position.
(3) Diagnose the CAN bus line.
(4) Turn the ignition switch to the "LOCK" (OFF) position.
Is the check result normal?
Go to Step 3.
Repair the CAN bus lines (Refer to GROUP 54C - CAN Bus Diagnostics Table ). On completion, go to Step 2.
 
STEP 2. DTC recheck after resetting CAN bus lines
Is the relevant DTC set?
Go to Step 3.
This diagnosis is complete.
 
STEP 3. Check whether the DTC is set again.
Erase the DTC.
Is the relevant DTC set?
Replace the hydraulic unit (integrated with ASC-ECU) (Refer to ). Then go to Step 4.
Intermittent malfunction (Refer to GROUP 00 - How to Use Troubleshooting/How to Cope with Intermittent Malfunctions ).
 
STEP 4. Check whether the DTC is set again.
Erase the DTC.
Is the relevant DTC set?
Return to Step 1.
This diagnosis is complete.