Brake. Yaris. Ncp93, 131
Brake Control Dynamic Control Systems. Yaris. Ncp93, 131
DTC C1468 SFR Solenoid Circuit |
DTC C1469 SFL Solenoid Circuit |
DTC C146A SRR Solenoid Circuit |
DTC 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. | DTC Detection Condition | Trouble Area |
| C1468 C1469 C146A C146B | Open or short in the solenoid circuit continues for 0.05 seconds or more. |
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WIRING DIAGRAM
INSPECTION PROCEDURE
- NOTICE:
- Inspect the fuses for circuits related to this system before performing the following inspection procedure.
| 1.RECONFIRM DTC |
- 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).
Clear the DTC (YARIS_NCP93 RM000000XHV0CPX.html).
Start the engine.
Drive the vehicle at the speed of 20 km/h (12 mph) or more for 30 seconds or more.
Check if the same DTC is recorded (YARIS_NCP93 RM000000XHV0CPX.html).
| Result | Proceed to |
| DTC is not output | A |
| DTC is output | B |
- HINT:
- If a speed signal of 6 km/h (4 mph) or more is input to the skid control ECU (brake actuator assembly), with the ignition switch ON and the stop light switch off, the ECU performs self diagnosis of the motor and solenoid circuits.
- If the normal system code is output (the trouble code is not output), slightly jiggle the connectors, wire harness, and fuses of the skid control ECU (brake actuator assembly). Make sure that no DTCs are output.
- If any DTCs are output while jiggling a connector or wire harness from the brake actuator assembly (skid control ECU (brake actuator assembly)), inspect and repair the connector or wire harness.
- The DTCs were probably output due to a bad connection of the connector terminal.
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| A | ||
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