RM38N0EC _54 Brake _111814 BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS _0503031 ELECTRONICALLY CONTROLLED BRAKE SYSTEM(for Gasoline Model) C

BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS ELECTRONICALLY CONTROLLED BRAKE SYSTEM(for Gasoline 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	DTC Output from	Priority
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)	Brake/EPB	A

WIRING DIAGRAM

Refer to DTC P057111.

Click hereBrake>BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS>ELECTRONICALLY CONTROLLED BRAKE SYSTEM (for Gasoline Model)>P057111202111,202303,_54,_111814,_0503031,RM100000001ZCX8,P057111202303,999999,_54,_111814,_0503031,RM100000002AE77,P057111

PROCEDURE

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

0.375,0.75 0.813,1.01 0.438,0.26 2.156,1.656 1.844,1.031 true 0.167,0.177 0.479,0.333 0.313,0.156 10 false *a 2.177,1.688 2.333,1.885 0.156,0.198 10 false L 0.469,0.813 0.958,1.146 0.49,0.333 10 false A43

*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
Click Location & Routing(A43)Location & Routingewd_type=routing;type=c;code=A43 Click Connector(A43)Instrument Panel>Engine Room Main Wire>Stop Light Switch Assemblyewd_type=component;type=c;code=A43;pinno=3
A43-3 (L) - Body ground	Brake pedal depressed	11 to 14 V
A43-3 (L) - Body ground	Brake pedal released	Below 1.5 V

Tester Connection

Condition

Specified Condition

Click Location & Routing(A43)Location & Routingewd_type=routing;type=c;code=A43

Click Connector(A43)Instrument Panel>Engine Room Main Wire>Stop Light Switch Assemblyewd_type=component;type=c;code=A43;pinno=3

A43-3 (L) - Body ground

Brake pedal depressed

11 to 14 V

A43-3 (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>REMOVAL202111,999999,_59,_111834,_0499900,RM100000001Z0MK,

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

Procedure1

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

OK:: The connector is securely connected.

Pre-procedure1

Disconnect the A40 skid control ECU (brake actuator assembly) connector.

Procedure2

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

OK:: No deformation or corrosion.

Procedure3

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

Standard Voltage:

Tester Connection	Condition	Specified Condition
Click Location & Routing(A40)Location & Routingewd_type=routing;type=c;code=A40 Click Connector(A40)Engine Compartment>Engine Room Main Wire / Transmission Wire>Brake Actuator Assemblyewd_type=component;type=c;code=A40;pinno=41
A40-41 (STP) - Body ground	Brake pedal depressed	11 to 14 V

Tester Connection

Condition

Specified Condition

Click Location & Routing(A40)Location & Routingewd_type=routing;type=c;code=A40

Click Connector(A40)Engine Compartment>Engine Room Main Wire / Transmission Wire>Brake Actuator Assemblyewd_type=component;type=c;code=A40;pinno=41

A40-41 (STP) - Body ground

Brake pedal depressed

11 to 14 V

Result:

Proceed to
OK
NG

Post-procedure1

None

REPLACE BRAKE ACTUATOR ASSEMBLY

Click hereBrake>BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS>BRAKE ACTUATOR (for Gasoline Model)>REMOVAL202111,202203,_54,_111814,_0500728,RM100000001Z37U,202203,202303,_54,_111814,_0500728,RM1000000022E3W,202303,202406,_54,_111814,_0500728,RM100000002B2O5,202406,999999,_54,_111814,_0500728,RM100000002MRSD,

REPAIR OR REPLACE HARNESS OR CONNECTOR