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) C13807E Stop Lamp Relay Actuator Stuck On

DESCRIPTION

When any of the following conditions are met, the skid control ECU (brake actuator assembly) sets the drive output (STPO) ON which operates the stop light control relay (stop light switch assembly) and turns on the stop lights.

Illumination Conditions:

Pre-collision brake is operating.

The dynamic radar cruise control system is operating and is applying the brakes.

Secondary collision brake is operating.

Brake hold is operating.

The parking brake is engaged while the vehicle is being driven.

DTC No.	Detection Item	DTC Detection Condition	Trouble Area	DTC Output from	Priority
C13807E	Stop Lamp Relay Actuator Stuck On	When the voltage at the +BS terminal is between 10 V or more and the stop light control relay (stop light switch assembly) drive output (STPO) is off, the signal at the STP2 terminal is different from the input signal at the STP terminal for 5 seconds or more.	· Wire harness or connector · Stop light switch assembly · Skid control ECU (brake actuator assembly) · Rear combination light assembly LH · Rear combination light assembly RH · Center stop light assembly	Brake/EPB	B

WIRING DIAGRAM

2.479,0.823 3.406,1.042 0.927,0.219 10 false to Each ECU 4.917,2.542 5.354,2.74 0.438,0.198 10 false STP 4.896,3.448 5.479,3.615 0.583,0.167 10 false STPO 4.917,4.438 5.417,4.719 0.5,0.281 10 false STP2 1.74,4.438 2.51,4.635 0.771,0.198 10 false GND 2.969,4.438 3.74,4.635 0.771,0.198 10 false OUT 2.958,3.438 3.479,3.635 0.521,0.198 10 false ACC 3.146,2.531 3.417,2.781 0.271,0.25 10 false L 1.26,6.344 2.031,6.542 0.771,0.198 10 false L15 1.271,6.5 3.708,6.833 2.438,0.333 10 false Rear Combination Light Assembly LH 1.26,7.875 2.031,8.073 0.771,0.198 10 false K15 4.802,7.875 5.573,8.073 0.771,0.198 10 false g1 4.729,5.177 5.25,5.375 0.521,0.198 10 false A40 4.719,5.323 6.26,5.875 1.542,0.552 10 false Skid Control ECU (Brake Actuator Assembly) 1.656,4.833 2.156,5.083 0.5,0.25 10 false A43 1.635,5 3.75,5.365 2.115,0.365 10 false Stop Light Switch Assembly 1.115,1.583 2.135,1.854 1.021,0.271 10 false from Battery 0.969,2.906 1.49,3.188 0.521,0.281 10 false STOP 1.75,2.865 2.021,3.115 0.271,0.25 10 false B 1.563,2.646 1.833,2.896 0.271,0.25 10 false 7 1.552,4.219 1.802,4.469 0.25,0.25 10 false 2 3.344,2.313 3.594,2.563 0.25,0.25 10 false 3 3.344,3.219 3.594,3.469 0.25,0.25 10 false 4 3.333,4.219 3.583,4.469 0.25,0.25 10 false 1 4.688,2.302 4.938,2.552 0.25,0.25 10 false 41 4.677,3.219 4.927,3.469 0.25,0.25 10 false 33 4.677,4.219 4.927,4.469 0.25,0.25 10 false 43 2.948,5.875 3.365,6.125 0.417,0.25 10 false 2 1.583,5.833 1.917,6.083 0.333,0.25 10 false 3 1.625,7.354 1.875,7.604 0.25,0.25 10 false 3 2.958,7.354 3.208,7.604 0.25,0.25 10 false 2 4.969,7.354 5.219,7.604 0.25,0.25 10 false 2 6.302,7.354 6.552,7.604 0.25,0.25 10 false 1 1.26,8.031 3.729,8.365 2.469,0.333 10 false Rear Combination Light Assembly RH 4.792,8.021 6.854,8.448 2.063,0.427 10 false Center Stop Light Assembly 1.833,6.104 2.167,6.354 0.333,0.25 10 false E 2.594,7.573 3.031,7.771 0.438,0.198 10 false STP 2.583,6.104 3.021,6.302 0.438,0.198 10 false STP 1.833,7.573 2.167,7.823 0.333,0.25 10 false E 6.104,7.573 6.438,7.823 0.333,0.25 10 false E 5.167,7.573 5.5,7.823 0.333,0.25 10 false STP 2.177,6.125 2.615,6.323 0.438,0.198 10 false Stop 2.167,7.604 2.604,7.802 0.438,0.198 10 false Stop

CAUTION / NOTICE / HINT

NOTICE:: Inspect the fuses for circuits related to this system before performing the following procedure.

PROCEDURE

1.CHECK DTC

Check the details of the DTCs.

Chassis > Brake/EPB > Trouble Codes: 50001 435

HINT:: When DTC P057111, P057112 and/or P057113 are output together with DTC C13807E, inspect and repair the trouble areas indicated by DTC P057111, P057112 and/or P057113 first.

Result:

Result	Proceed to
P057111, P057112, P057113 or C13807E is output	A
C13807E is output	B

REPAIR CIRCUITS INDICATED BY OUTPUT DTCS

2.CHECK STOP LIGHT ILLUMINATION STATUS

With the brake pedal released, check the illumination status of the brake lights.

Result:

Result	Proceed to
The stop lights are illuminated.	A
The stop lights are not illuminated.	B

3.CHECK HARNESS AND CONNECTOR (STOP LIGHT CONTROL RELAY CIRCUIT)

8.CHECK STOP LIGHT OPERATION

3.CHECK HARNESS AND CONNECTOR (STOP LIGHT CONTROL RELAY CIRCUIT)

0.448,0.448 0.781,0.698 0.333,0.25 2.083,1.667 1.729,1.031 true 0.188,0.177 0.5,0.333 0.313,0.156 10 false *a 0.51,0.5 0.969,0.698 0.458,0.198 10 false A43 2.021,1.708 2.479,1.906 0.458,0.198 10 false ACC

*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=4
A43-4 (ACC) - Body ground	Always	11 to 14 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=4

A43-4 (ACC) - Body ground

Always

11 to 14 V

Result:

Proceed to
OK
NG

4.CHECK STOP LIGHT ILLUMINATION STATUS

6.CHECK HARNESS AND CONNECTOR (STOP LIGHT CONTROL RELAY CIRCUIT)

4.CHECK STOP LIGHT ILLUMINATION STATUS

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 A43 stop light switch assembly connector.

Procedure2

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

OK:: No deformation or corrosion.

Procedure3

Check the illumination status of the brake lights.

Result:

Result	Proceed to
The stop lights are illuminated.	A
The stop lights are not illuminated.	B

Post-procedure1

None

5.CHECK STOP LIGHT ILLUMINATION STATUS

REPLACE STOP LIGHT SWITCH ASSEMBLY

Click hereVehicle Exterior>LIGHTING (EXT)>STOP LIGHT SWITCH>REMOVAL202111,999999,_59,_111834,_0499900,RM100000001Z0MK,

5.CHECK STOP LIGHT ILLUMINATION STATUS

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.

Disconnect the A43 stop light switch assembly connector.

Procedure2

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

OK:: No deformation or corrosion.

Procedure3

Check the illumination status of the brake lights.

Result:

Result	Proceed to
The stop lights are illuminated.	A
The stop lights are not illuminated.	B

Post-procedure1

None

REPAIR OR REPLACE HARNESS OR CONNECTOR (STOP LIGHT CIRCUIT)

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,

6.CHECK HARNESS AND CONNECTOR (STOP LIGHT CONTROL RELAY CIRCUIT)

Procedure1

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

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

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

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=4
A43-4 (ACC) - Body ground	Always	11 to 14 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=4

A43-4 (ACC) - Body ground

Always

11 to 14 V

Result:

Proceed to
OK
NG

Post-procedure1

None

REPLACE BRAKE ACTUATOR ASSEMBLY

7.CHECK HARNESS AND CONNECTOR (STOP LIGHT SWITCH ASSEMBLY - BRAKE ACTUATOR ASSEMBLY)

Procedure1

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

OK:: The connector is securely connected.

Pre-procedure1

Disconnect the A43 stop right switch assembly connector.

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 resistance according to the value(s) in the table below.

Standard Resistance:

Tester Connection	Condition	Specified Condition
Click Location & Routing(A43,A40)Location & Routingewd_type=routing;type=c,c;code=A43,A40 Click Connector(A43)Instrument Panel>Engine Room Main Wire>Stop Light Switch Assemblyewd_type=component;type=c;code=A43;pinno=4 Click Connector(A40)Engine Compartment>Engine Room Main Wire / Transmission Wire>Brake Actuator Assemblyewd_type=component;type=c;code=A40;pinno=33
A43-4 (ACC) or A40-33 (STPO) - Body ground and other terminals	Always	10 kΩ or higher

Tester Connection

Condition

Specified Condition

Click Location & Routing(A43,A40)Location & Routingewd_type=routing;type=c,c;code=A43,A40

Click Connector(A43)Instrument Panel>Engine Room Main Wire>Stop Light Switch Assemblyewd_type=component;type=c;code=A43;pinno=4

Click Connector(A40)Engine Compartment>Engine Room Main Wire / Transmission Wire>Brake Actuator Assemblyewd_type=component;type=c;code=A40;pinno=33

A43-4 (ACC) or A40-33 (STPO) - Body ground and other terminals

Always

10 kΩ or higher

Result:

Proceed to
OK
NG

Post-procedure1

None

REPLACE STOP LIGHT SWITCH ASSEMBLY

Click hereVehicle Exterior>LIGHTING (EXT)>STOP LIGHT SWITCH>REMOVAL202111,999999,_59,_111834,_0499900,RM100000001Z0MK,

REPAIR OR REPLACE HARNESS OR CONNECTOR

8.CHECK STOP LIGHT OPERATION

Check that the stop lights come on when the brake pedal is depressed.

OK:: The stop lights illuminate.

Result:

Proceed to
OK
NG

9.CHECK HARNESS AND CONNECTOR (STOP LIGHT SIGNAL INPUT CIRCUIT)

10.CHECK STOP LIGHT OPERATION

9.CHECK HARNESS AND CONNECTOR (STOP LIGHT SIGNAL INPUT CIRCUIT)

Procedure1

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

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=43
A40-43 (STP2) - 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=43

A40-43 (STP2) - Body ground

Brake pedal depressed

11 to 14 V

Result:

Proceed to
OK
NG

Post-procedure1

None

REPLACE BRAKE ACTUATOR ASSEMBLY

REPAIR OR REPLACE HARNESS OR CONNECTOR

10.CHECK STOP LIGHT OPERATION

Procedure1

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

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

Check that the stop lights come on when the brake pedal is depressed.

OK:: The stop lights illuminate.

Result:

Proceed to
OK
NG

Post-procedure1

None

REPLACE BRAKE ACTUATOR ASSEMBLY

11.CHECK HARNESS AND CONNECTOR (STOP LIGHT SWITCH ASSEMBLY - REAR COMBINATION LIGHT ASSEMBLY LH)

Procedure1

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

OK:: The connector is securely connected.

Pre-procedure1

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

Disconnect the L15 rear combination light assembly LH 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(L15)Location & Routingewd_type=routing;type=c;code=L15 Click Connector(L15)Body>No. 2 Floor Wire>Rear Combination Light Assembly LHewd_type=component;type=c;code=L15;pinno=2
L15-2 (STP) - Body ground	Brake pedal depressed	11 to 14 V

Tester Connection

Condition

Specified Condition

Click Location & Routing(L15)Location & Routingewd_type=routing;type=c;code=L15

Click Connector(L15)Body>No. 2 Floor Wire>Rear Combination Light Assembly LHewd_type=component;type=c;code=L15;pinno=2

L15-2 (STP) - Body ground

Brake pedal depressed

11 to 14 V

Result:

Proceed to
OK
NG

Post-procedure1

None

GO TO LIGHTING SYSTEM (REAR COMBINATION LIGHT ASSEMBLY LH (STOP LIGHT CIRCUIT))

Refer to "Left or right stop light does not illuminate" of problem symptoms table.

Click hereVehicle Exterior>LIGHTING (EXT)>LIGHTING SYSTEM>PROBLEM SYMPTOMS TABLE202111,202303,_59,_111834,_0499887,RM100000001Z0KH,202303,999999,_59,_111834,_0499887,RM100000002MJYF,

12.CHECK HARNESS AND CONNECTOR (STOP LIGHT SWITCH ASSEMBLY - REAR COMBINATION LIGHT ASSEMBLY RH)

Procedure1

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

OK:: The connector is securely connected.

Pre-procedure1

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

Disconnect the L15 rear combination light assembly LH connector.

Disconnect the K15 rear combination light assembly RH 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(K15)Location & Routingewd_type=routing;type=c;code=K15 Click Connector(K15)Body>Floor Wire>Rear Combination Light Assembly RHewd_type=component;type=c;code=K15;pinno=2
K15-2 (STP) - Body ground	Brake pedal depressed	11 to 14 V

Tester Connection

Condition

Specified Condition

Click Location & Routing(K15)Location & Routingewd_type=routing;type=c;code=K15

Click Connector(K15)Body>Floor Wire>Rear Combination Light Assembly RHewd_type=component;type=c;code=K15;pinno=2

K15-2 (STP) - Body ground

Brake pedal depressed

11 to 14 V

Result:

Proceed to
OK
NG

Post-procedure1

None

GO TO LIGHTING SYSTEM (REAR COMBINATION LIGHT ASSEMBLY RH (STOP LIGHT CIRCUIT))

Refer to "Left or right stop light does not illuminate" of problem symptoms table.

Click hereVehicle Exterior>LIGHTING (EXT)>LIGHTING SYSTEM>PROBLEM SYMPTOMS TABLE202111,202303,_59,_111834,_0499887,RM100000001Z0KH,202303,999999,_59,_111834,_0499887,RM100000002MJYF,

13.CHECK HARNESS AND CONNECTOR (STOP LIGHT SWITCH ASSEMBLY - CENTER STOP LIGHT ASSEMBLY)

Procedure1

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

OK:: The connector is securely connected.

Pre-procedure1

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

Disconnect the L15 rear combination light assembly LH connector.

Disconnect the K15 rear combination light assembly RH connector.

Disconnect the g1 center stop light 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(g1)Location & Routingewd_type=routing;type=c;code=g1 Click Connector(g1)Body>Cord Assembly>Center Stop Light Assemblyewd_type=component;type=c;code=g1;pinno=2
g1-2 (STP) - Body ground	Brake pedal depressed	11 to 14 V

Tester Connection

Condition

Specified Condition

Click Location & Routing(g1)Location & Routingewd_type=routing;type=c;code=g1

Click Connector(g1)Body>Cord Assembly>Center Stop Light Assemblyewd_type=component;type=c;code=g1;pinno=2

g1-2 (STP) - Body ground

Brake pedal depressed

11 to 14 V

Result:

Proceed to
OK
NG

Post-procedure1

None

GO TO LIGHTING SYSTEM (CENTER STOP LIGHT ASSEMBLY (STOP LIGHT CIRCUIT))

Refer to "High mounted stop light does not illuminate" of problem symptoms table.

Click hereVehicle Exterior>LIGHTING (EXT)>LIGHTING SYSTEM>PROBLEM SYMPTOMS TABLE202111,202303,_59,_111834,_0499887,RM100000001Z0KH,202303,999999,_59,_111834,_0499887,RM100000002MJYF,

14.CHECK HARNESS AND CONNECTOR (STOP LIGHT SWITCH ASSEMBLY - REAR COMBINATION LIGHT ASSEMBLY LH)

Procedure1

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

OK:: The connector is securely connected.

Pre-procedure1

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

Disconnect the L15 rear combination light assembly LH connector.

Disconnect the K15 rear combination light assembly RH connector.

Disconnect the g1 center stop light assembly connector.

Disconnect the A43 stop light switch assembly connector.

Procedure2

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

OK:: No deformation or corrosion.

Procedure3

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

Standard Resistance:

Tester Connection	Condition	Specified Condition
Click Location & Routing(A43,L15)Location & Routingewd_type=routing;type=c,c;code=A43,L15 Click Connector(A43)Instrument Panel>Engine Room Main Wire>Stop Light Switch Assemblyewd_type=component;type=c;code=A43;pinno=1 Click Connector(L15)Body>No. 2 Floor Wire>Rear Combination Light Assembly LHewd_type=component;type=c;code=L15;pinno=2
A43-1 (OUT) - L15-2 (STP)	Always	Below 1 Ω
A43-1 (OUT) or L15-2 (STP) - Body ground	Always	10 kΩ or higher

Tester Connection

Condition

Specified Condition

Click Location & Routing(A43,L15)Location & Routingewd_type=routing;type=c,c;code=A43,L15

Click Connector(A43)Instrument Panel>Engine Room Main Wire>Stop Light Switch Assemblyewd_type=component;type=c;code=A43;pinno=1

Click Connector(L15)Body>No. 2 Floor Wire>Rear Combination Light Assembly LHewd_type=component;type=c;code=L15;pinno=2

A43-1 (OUT) - L15-2 (STP)

Always

Below 1 Ω

A43-1 (OUT) or L15-2 (STP) - Body ground

Always

10 kΩ or higher

Result:

Proceed to
OK
NG

Post-procedure1

None

REPLACE STOP LIGHT SWITCH ASSEMBLY

Click hereVehicle Exterior>LIGHTING (EXT)>STOP LIGHT SWITCH>REMOVAL202111,999999,_59,_111834,_0499900,RM100000001Z0MK,

REPAIR OR REPLACE HARNESS OR CONNECTOR