DESCRIPTION These solenoids
turn on when signals are received from the skid control ECU (brake
actuator assembly) and they control the pressure acting on the wheel
cylinders to control the braking force. |
DTC No. | Detection Item |
DTC Detection Condition | Trouble Area | |
C1225 | SM Solenoid Circuit |
When
there is a difference between the requested current value of solenoid
valve and the measured current value of the solenoid valve. |
- Solenoid circuit
- Solenoid valve (brake actuator assembly)
| | C1226 |
SA2 Solenoid Circuit | When
there is a difference between the requested current value of solenoid
valve and the measured current value of the solenoid valve. |
- Solenoid circuit
- Solenoid valve (brake actuator assembly)
| | C1227 |
SA3 Solenoid Circuit | When
there is a difference between the requested current value of solenoid
valve and the measured current value of the solenoid valve. |
- Solenoid circuit
- Solenoid valve (brake actuator assembly)
| | C1228 |
STR Solenoid Circuit | When
there is a difference between the requested current value of solenoid
valve and the measured current value of the solenoid valve. |
- Solenoid circuit
- Solenoid valve (brake actuator assembly)
| | C1468 |
SFR Solenoid Circuit | When
there is a difference between the requested current value of solenoid
valve and the measured current value of the solenoid valve. |
- Solenoid circuit
- Solenoid valve (brake actuator assembly)
| | C1469 |
SFL Solenoid Circuit | When
there is a difference between the requested current value of solenoid
valve and the measured current value of the solenoid valve. |
- Solenoid circuit
- Solenoid valve (brake actuator assembly)
| | C146A |
SRR Solenoid Circuit | When
there is a difference between the requested current value of solenoid
valve and the measured current value of the solenoid valve. |
- Solenoid circuit
- Solenoid valve (brake actuator assembly)
| | C146B |
SRL Solenoid Circuit | When
there is a difference between the requested current value of solenoid
valve and the measured current value of the solenoid valve. |
- Solenoid circuit
- Solenoid valve (brake actuator assembly)
| WIRING DIAGRAM
Refer to DTC C146E. Click here  CAUTION / NOTICE / HINT
NOTICE: When
replacing the skid control ECU (brake actuator assembly), perform
system variant learning and acceleration sensor zero point calibration. Click here
PROCEDURE
HINT: These codes are detected when a problem is determined in the skid control ECU (brake actuator assembly).
The solenoid circuits are in the skid control ECU (brake actuator assembly).
Therefore,
solenoid circuit inspection and solenoid unit inspection cannot be
performed. Be sure to check if any DTCs are output before replacing the
skid control ECU (brake actuator assembly). (a) Clear the DTCs. (b) Turn the ignition switch off.
(c) Start the engine. (d) Drive the vehicle. (e) Check if the same DTC is output.
|
Result | Proceed to | |
Both C1225, C1226, C1227, C1228, C1468, C1469, C146A and C146B are not output |
A | | C1225, C1226, C1227, C1228, C1468, C1469, C146A or C146B is output |
B |
HINT:
- The skid control ECU (brake actuator assembly) performs self diagnosis
of the solenoid circuit after the ignition switch is turned to ON.
- If the normal system code is output (no DTCs are output), slightly
jiggle the connectors, wire harness, and fuses of the skid control ECU
(brake actuator assembly).
- If any DTCs are output while jiggling a connector or wire harness of the
skid control ECU (brake actuator assembly), inspect and repair the
connector or wire harness.
- If no DTCs were output when reconfirming DTCs, checking for intermittent
problems is necessary because it is suspected that the original DTCs
were stored due to the poor connection of a connector terminal.
| A |
 | USE SIMULATION METHOD TO CHECK |
| B |
| REPLACE BRAKE ACTUATOR ASSEMBLY | |
