RM35X0E _54 Brake _078667 BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS _0383093 ELECTRONICALLY CONTROLLED BRAKE SYSTEM(w/o VSC OFF Switch) C

BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS  ELECTRONICALLY CONTROLLED BRAKE SYSTEM(w/o 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

C414211E01
0.813,1.427 1.688,1.677 0.875,0.25 10 false from Battery 2.521,1.594 2.979,1.833 0.458,0.24 10 false STOP 2.969,1.271 3.156,1.531 0.188,0.26 10 false 2 4.365,1.271 4.552,1.531 0.188,0.26 10 false 1 5.385,1.281 5.656,1.531 0.271,0.25 10 false 9 5.688,1.292 6.073,1.552 0.385,0.26 10 false STP 5.344,2.802 5.729,3.063 0.385,0.26 10 false A28 5.333,2.99 6.875,3.354 1.542,0.365 10 false Skid Control ECU (Brake Actuator Assembly) 3.125,1.802 3.583,2.042 0.458,0.24 10 false M1 3.135,2.01 4.917,2.281 1.781,0.271 10 false Stop Light Switch Assembly

CAUTION / NOTICE / HINT

NOTICE:

After replacing the skid control ECU (brake actuator assembly), perform store system information memorization.

Click hereBrake>BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS>ELECTRONICALLY CONTROLLED BRAKE SYSTEM (w/o VSC OFF Switch)>UTILITY


PROCEDURE

1.INSPECT STOP LIGHT SWITCH ASSEMBLY
a.

Turn the ignition switch off.


b.

Remove the stop light switch assembly.


c.

Inspect the stop light switch assembly.

Click hereVehicle Exterior>LIGHTING (EXT)>STOP LIGHT SWITCH>INSPECTION

OK:

The stop light switch assembly is normal.


Result:
Result
OK
NG




OK

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

NG

REPLACE STOP LIGHT SWITCH ASSEMBLY

Click hereVehicle Exterior>LIGHTING (EXT)>STOP LIGHT SWITCH>REMOVAL


2.CHECK HARNESS AND CONNECTOR (STOP LIGHT SWITCH ASSEMBLY INPUT CIRCUIT)
a.
C414210C02
1.5,0.667 1.917,0.917 0.417,0.25 1.979,1.938 1.833,2.5 1.833,2.5 1.667,2.5 true 1.573,0.719 2.031,0.917 0.458,0.198 10 false A28 1.333,2.417 1.792,2.615 0.458,0.198 10 false STP 0.104,0.094 0.563,0.292 0.458,0.198 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.



b.

Reconnect the stop light switch assembly.


c.

Disconnect the A28 skid control ECU (brake actuator assembly) connector.


d.

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

OK:

No deformation or corrosion.



e.

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



OK

REPLACE BRAKE ACTUATOR ASSEMBLY

Click hereBrake>BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS>BRAKE ACTUATOR>REMOVAL


NG

REPAIR OR REPLACE HARNESS OR CONNECTOR