VEHICLE STABILITY CONTROL SYSTEM, Diagnostic DTC:C1225,C1226,C1227,C1228,C1468,C1469,C146A and C146B
| DTC Code | DTC Name |
|---|---|
| C1225 | SM Solenoid Circuit |
| C1226 | SA2 Solenoid Circuit |
| C1227 | SA3 Solenoid Circuit |
| C1228 | STR Solenoid Circuit |
| C1468 | SFR Solenoid Circuit |
| C1469 | SFL Solenoid Circuit |
| C146A | SRR Solenoid Circuit |
| C146B | SRL Solenoid Circuit |
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 |
Note |
|---|---|---|---|---|
C1225 |
SM Solenoid Circuit |
Solenoid valve signal does not match the check result. |
|
Tire pressure warning light (w/ tire pressure warning system) is off. |
C1226 |
SA2 Solenoid Circuit |
Solenoid valve signal does not match the check result. |
|
Tire pressure warning light (w/ tire pressure warning system) is off. |
C1227 |
SA3 Solenoid Circuit |
Solenoid valve signal does not match the check result. |
|
Tire pressure warning light (w/ tire pressure warning system) is off. |
C1228 |
STR Solenoid Circuit |
Solenoid valve signal does not match the check result. |
|
Tire pressure warning light (w/ tire pressure warning system) is off. |
C1468 |
SFR Solenoid Circuit |
Solenoid valve signal does not match the check result. |
|
Tire pressure warning light (w/ tire pressure warning system) is off. |
C1469 |
SFL Solenoid Circuit |
Solenoid valve signal does not match the check result. |
|
Tire pressure warning light (w/ tire pressure warning system) is off. |
C146A |
SRR Solenoid Circuit |
Solenoid valve signal does not match the check result. |
|
Tire pressure warning light (w/ tire pressure warning system) is off. |
C146B |
SRL Solenoid Circuit |
Solenoid valve signal does not match the check result. |
|
Tire pressure warning light (w/ tire pressure warning system) is off. |
WIRING DIAGRAM
Refer to DTC C146E.
PROCEDURE
RECONFIRM DTC
Tip: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).
Clear the DTCs.
Chassis > ABS/VSC/TRC > Clear DTCs
Turn the ignition switch off.
Start the engine.
Drive the vehicle at a speed of 20 km/h (12 mph) or more.
Check if the same DTC is output.
Chassis > ABS/VSC/TRC > Trouble Codes
Result
Result
Proceed to
DTCs C1225, C1226, C1227, C1228, C1468, C1469, C146A and C146B are not output.
A
DTCs C1225, C1226, C1227, C1228, C1468, C1469, C146A and/or C146B are output.
B
Tip: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.