RM35X0E _54 Brake _078667 BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS _0385049 ELECTRONICALLY CONTROLLED BRAKE SYSTEM(w/ VSC OFF Switch) C

BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS ELECTRONICALLY CONTROLLED BRAKE SYSTEM(w/ VSC OFF Switch) 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
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)

WIRING DIAGRAM

Refer to DTC P057111.

Click hereBrake>BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS>ELECTRONICALLY CONTROLLED BRAKE SYSTEM (w/ VSC OFF Switch)>P057111201906,202107,_54,_078667,_0385049,RM100000001IQ9S,P057111202107,999999,_54,_078667,_0385049,RM100000001XSNN,P057111

CAUTION / NOTICE / HINT

NOTICE:: After replacing the skid control ECU (brake actuator assembly), perform acceleration sensor zero point calibration and store system information memorization.; Click hereBrake>BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS>ELECTRONICALLY CONTROLLED BRAKE SYSTEM (w/ VSC OFF Switch)>UTILITY201902,999999,_54,_078667,_0385049,RM100000001GK1P,

PROCEDURE

1.INSPECT STOP LIGHT SWITCH ASSEMBLY

Turn the ignition switch off.

Remove the stop light switch assembly.

Inspect the stop light switch assembly.

w/ Rear Combination Light (for Bulb Type): Click hereVehicle Exterior>LIGHTING (EXT)>STOP LIGHT SWITCH>INSPECTION201902,999999,_59,_079256,_0384445,RM100000001GGRX,

w/ Rear Combination Light (for LED Type): Click hereVehicle Exterior>LIGHTING (EXT)>STOP LIGHT SWITCH>ON-VEHICLE INSPECTION201906,999999,_59,_079256,_0384445,RM100000001IW4K,

OK:: The stop light switch assembly is normal.

Result:

Result
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>REMOVAL201902,999999,_59,_079256,_0384445,RM100000001GGPS,

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

0.281,0.531 0.729,0.792 0.448,0.26 2.167,2.458 2.031,1.917 true 0.177,0.188 0.49,0.385 0.313,0.198 10 false *a 0.365,0.573 0.771,0.76 0.406,0.188 10 false A28 2.135,2.531 2.448,2.729 0.313,0.198 10 false STP

*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.

Reconnect the stop light switch assembly.

Disconnect the A28 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
A28-9 (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>REMOVAL201906,202310,_54,_078667,_0381523,RM100000001IPGN,202310,999999,_54,_078667,_0381523,RM100000002G2A2,

REPAIR OR REPLACE HARNESS OR CONNECTOR