RM38T0EC _54 Brake _112606 BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS _0608077 ELECTRONICALLY CONTROLLED BRAKE SYSTEM(for HEV Model) C

BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS ELECTRONICALLY CONTROLLED BRAKE SYSTEM(for HEV Model) P057113 Brake Switch "A" Circuit Open

DESCRIPTION

The skid control ECU (brake actuator assembly) receives stop light switch assembly signals and uses them to determine whether or not the brakes are applied.

The skid control ECU (brake actuator assembly) has a detection circuit that it uses to detect an open in the stop light input line.

If the skid control ECU (brake actuator assembly) detects an open in this circuit, it will store this DTC.

DTC No.	Detection Item	DTC Detection Condition	Trouble Area	MIL	DTC Output from	Note
P057113	Brake Switch "A" Circuit Open	An open in the stop light switch assembly input line continues for 3 seconds or more.	· Stop light switch assembly · Wire harness or connector · Skid control ECU (brake actuator assembly)	Does not come on	Brake/EPB	Output ECU: Skid control ECU (brake actuator assembly)

WIRING DIAGRAM

Refer to DTC C117B62.

Click hereBrake>BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS>ELECTRONICALLY CONTROLLED BRAKE SYSTEM (for HEV Model)>C117B62202307,999999,_54,_112606,_0608077,RM100000002C7BL_03,C117B62

PROCEDURE

1.CHECK HARNESS AND CONNECTOR (STOP LIGHT SWITCH ASSEMBLY OUTPUT CIRCUIT)

0.396,0.448 0.781,0.698 0.385,0.25 2.51,1.802 1.875,1.063 true 0.188,0.177 0.5,0.333 0.313,0.156 10 false *a 0.479,0.479 0.938,0.677 0.458,0.198 10 false A53 2.583,1.719 3.042,1.917 0.458,0.198 10 false L

*a	Component with harness connected (Stop Light Switch Assembly)

Make sure that there is no looseness at the locking part and the connecting part of the connector.

OK:: The connector is securely connected.

Measure the voltage according to the value(s) in the table below.

Standard Voltage:

Tester Connection	Condition	Specified Condition
A53-3 (L) - Body ground	Brake pedal depressed	11 to 14 V
A53-3 (L) - Body ground	Brake pedal released	Below 1.5 V

Result:

Proceed to
OK
NG

2.CHECK HARNESS AND CONNECTOR (STOP LIGHT SWITCH ASSEMBLY INPUT CIRCUIT)

REPLACE STOP LIGHT SWITCH ASSEMBLY

Click hereVehicle Exterior>LIGHTING (EXT)>STOP LIGHT SWITCH>REMOVAL202201,999999,_59,_112294,_0501115,RM100000001Z4Y5,

2.CHECK HARNESS AND CONNECTOR (STOP LIGHT SWITCH ASSEMBLY INPUT CIRCUIT)

1.5,0.115 1.938,0.406 0.438,0.292 2.469,0.406 2.073,0.948 true 1.563,0.167 2.177,0.365 0.615,0.198 10 false A151 2.49,0.26 3.104,0.458 0.615,0.198 10 false STP 0.156,0.125 0.469,0.323 0.313,0.198 10 false *a

*a	Front view of wire harness connector (to skid control ECU (Brake Actuator Assembly))

Make sure that there is no looseness at the locking part and the connecting part of the connector.

OK:: The connector is securely connected.

Disconnect the A151 skid control ECU (brake actuator assembly) connector.

Check both the connector case and the terminals for deformation and corrosion.

OK:: No deformation or corrosion.

Measure the voltage according to the value(s) in the table below.

Standard Voltage:

Tester Connection	Condition	Specified Condition
A151-41 (STP) - Body ground	Brake pedal depressed	11 to 14 V

Result:

Proceed to
OK
NG

REPLACE BRAKE ACTUATOR ASSEMBLY

Click hereBrake>BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS>BRAKE ACTUATOR (for HEV Model)>REMOVAL202307,999999,_54,_112606,_0604462,RM100000002BUEM,

REPAIR OR REPLACE HARNESS OR CONNECTOR