DTC C1225: SM Solenoid Circuit; DTC C1468: SFR Solenoid Circuit; DTC C1469: SFL Solenoid Circuit; DTC C146A: SRR Solenoid Circuit; DTC C146B: SRL Solenoid Circuit [12/2017 - 09/2018]: Procedure

HINT: 

The solenoid circuits are in the 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).

1. Clear the DTCs.

   Refer to DTC CHECK / CLEAR [12/2017 - 09/2018]

   Chassis > ABS/VSC/TRAC > Clear DTCs 

2. Turn the engine switch off.
3. Start the engine.
4. Perform a road test.
5. Check if the same DTC is output.

   Refer to DTC CHECK / CLEAR [12/2017 - 09/2018]

   Chassis > ABS/VSC/TRAC > Trouble Codes 

   Result

   Result	Proceed to
   DTCs C1225, C1468, C1469, C146A and C146B are not output.	A
   DTCs C1225, C1468, C1469, C146A and/or C146B are 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 engine switch on (IG) and the stop light switch off, the ECU performs self diagnosis of the motor and solenoid circuits.
   • 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.

Result: 

A 

USE SIMULATION METHOD TO CHECK. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [12/2017 - 09/2018] 

Result: 

B 

REPLACE BRAKE ACTUATOR ASSEMBLY. Refer to  REMOVAL [12/2017 - 09/2018]