Toyota 4Runner: SFR Solenoid Circuit (C0226,C0236,C0246,C0256,C1225-C1228)

Toyota 4Runner Service Manual / Brake / Brake Control / Dynamic Control Systems / Vehicle Stability Control System(for Hydraulic Brake Booster) / SFR Solenoid Circuit (C0226,C0236,C0246,C0256,C1225-C1228)

DESCRIPTION

The solenoid turns on when signals are received from the skid control ECU and controls the pressure acting on the wheel cylinders, thus controlling braking force.

DTC Code	DTC Detection Condition	Trouble Area
C0226	An open or short circuit in the SFRH or SFRR circuit continues for 0.05 seconds or more.	SFRH or SFRR circuit Master cylinder solenoid
C0236	An open or short circuit in the SFLH or SFLR circuit continues for 0.05 seconds or more.	SFLH or SFLR circuit Master cylinder solenoid
C0246	An open or short circuit in the SRRH or SRRR circuit continues for 0.05 seconds or more.	SRRH or SRRR circuit Master cylinder solenoid
C0256	An open or short circuit in the SRLH or SRLR circuit continues for 0.05 seconds or more.	SRLH or SRLR circuit Master cylinder solenoid
C1225	An open or short circuit in the SMCF circuit continues for 0.05 seconds or more.	SMCF circuit Master cylinder solenoid
C1226	An open or short circuit in the SREA circuit continues for 0.05 seconds or more.	SREA circuit Master cylinder solenoid
C1227	An open or short circuit in the SREC circuit continues for 0.05 seconds or more.	SREC circuit Master cylinder solenoid
C1228	An open or short circuit in the STR circuit continues for 0.05 seconds or more.	STR circuit Master cylinder solenoid

WIRING DIAGRAM

CAUTION / NOTICE / HINT

NOTICE:

When replacing the master cylinder solenoid, perform calibration (See page ).

PROCEDURE

1.	RECONFIRM DTC

HINT:

These codes are stored when a problem is detected in the master cylinder solenoid.

The solenoid circuit is in the master cylinder solenoid.

Therefore, solenoid circuit inspections and solenoid unit inspections cannot be performed. Be sure to check if any DTC is output before replacing the master cylinder solenoid.

(a) Clear the DTCs (See page ).

(b) Drive the vehicle at a speed of approximately 32 km/h (20 mph) or more for 60 seconds or more.

Result

Result	Proceed to
DTC is output	A
DTC is not output	B

REPLACE MASTER CYLINDER SOLENOID

USE SIMULATION METHOD TO CHECK

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