Last Modified: 07-31-2024 6.11:8.1.0 Doc ID: RM10000000260SU
Model Year Start: 2023 Model: GR Corolla Prod Date Range: [09/2022 -           ]
Title: BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: ELECTRONICALLY CONTROLLED BRAKE SYSTEM (for Gasoline Model without Electric Parking Brake System TMC Made): C13807F; Stop Lamp Relay Actuator Stuck Off; 2023 - 2025 MY Corolla Corolla Hatchback GR Corolla [09/2022 -        ]

DTC

C13807F

Stop Lamp Relay Actuator Stuck Off

DESCRIPTION

Refer to DTC C13807E.

Click here 2023 - 2025 MY Corolla Corolla Hatchback GR Corolla [09/2022 -        ]; BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: ELECTRONICALLY CONTROLLED BRAKE SYSTEM (for Gasoline Model without Electric Parking Brake System TMC Made): C13807E; Stop Lamp Relay Actuator Stuck On

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

C13807F

Stop Lamp Relay Actuator Stuck Off

Either of the following is detected:

  • When the IGR terminal voltage exceeds 10 V and the +BS terminal voltage is from 9.5 to 17.4 V, stop light drive output (STPO) is ON, STP is OFF and STP2 is OFF continuously for 2 seconds or more.
  • When the IGR terminal voltage exceeds 10 V and the +BS terminal voltage is from 9.5 to 17.4 V, STP is OFF and STP2 is ON continuously for 5 seconds or more.
  • Wire harness and connector
  • Stop light switch assembly
  • Skid control ECU (brake actuator assembly)
  • STP circuit
  • STP2 circuit

WIRING DIAGRAM

Refer to DTC C13807E.

Click here 2023 - 2025 MY Corolla Corolla Hatchback GR Corolla [09/2022 -        ]; BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: ELECTRONICALLY CONTROLLED BRAKE SYSTEM (for Gasoline Model without Electric Parking Brake System TMC Made): C13807E; Stop Lamp Relay Actuator Stuck On

CAUTION / NOTICE / HINT

NOTICE:

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

PROCEDURE

1.

PERFORM ACTIVE TEST USING GTS (STOP LAMP RELAY)

(a) Perform the stop light control relay (stop light switch assembly) Active Test, and confirm that the stop lights illuminate and turn off and the value of "Stop Light SW", "Stop Light Relay" and "STPO" changes.

Chassis > Brake/EPB > Active Test

Tester Display

Measurement Item

Control Range

Restrict Condition

Diagnostic Note

Stop Lamp Relay

Stop light control relay (stop light switch assembly)

OFF / ON

Vehicle condition: Vehicle stopped

HINT:

To protect this Actuator and Solenoid, this test will only last 5 seconds.

With the brake pedal released, check that the stop lights illuminate and the value of Stop Light Relay on the GTS changes to ON when Stop Lamp Relay is ON

Chassis > Brake/EPB > Data List

Tester Display

Measurement Item

Range

Normal Condition

Diagnostic Note

Stop Light SW

Stop light switch assembly status

(STP or STP2 terminal input)

OFF / ON

OFF: Brake pedal released

ON: Brake pedal depressed

HINT:

  • Stop light control relay off: STP terminal status displayed.
  • Stop light control relay on: STP2 terminal status displayed.

Stop Light Relay

Stop light control relay (stop light switch assembly) status

(STP2 terminal input)

OFF / ON

OFF: Stop light control relay (stop light switch assembly) off and brake pedal released

ON: Stop light control relay (stop light switch assembly) on or brake pedal depressed

HINT:

The voltage of power supplied to the stop lights is measured at the STP2 terminal.

STPO

Stop light control relay (stop light switch assembly) status

(STPO terminal output)

OFF / ON

OFF: Stop light control relay (stop light switch assembly) off (Stop light off)

ON: Stop light control relay (stop light switch assembly) on (Stop light on)

HINT:

When STPO is ON, the stop light control relay (stop light switch assembly) turns ON and the stop lights illuminate

Chassis > Brake/EPB > Active Test

Active Test Display

Stop Lamp Relay

Data List Display

Stop Light SW

Stop Light Relay

STPO

Data List Status

Stop Light Illumination Status

Proceed to

Stop Light SW

Stop Light Relay

STPO

OFF

OFF

ON

Not illuminated

A

OFF

OFF

ON

Illuminated

B

ON

ON

ON

Illuminated

C
B

GO TO STEP 7

C

GO TO STEP 8

A

2.

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

(a) Turn the ignition switch off.

*a

Front view of wire harness connector

(to Skid Control ECU (Brake Actuator Assembly))

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

OK:

The connector is securely connected.

(c) Disconnect the A140 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

A140-32 (STPO) - Body ground

Always

11 to 14 V
NG

GO TO STEP 6

OK

3.

CHECK BRAKE ACTUATOR ASSEMBLY

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

Standard Voltage:

Tester Connection

Condition

Specified Condition

A140-11 (STP) - Body ground

Stop light switch assembly on (Brake pedal depressed)

11 to 14 V

*a

Front view of wire harness connector

(to Skid Control ECU (Brake Actuator Assembly))
OK

REPLACE BRAKE ACTUATOR ASSEMBLY 2023 MY Corolla Corolla Hatchback GR Corolla [09/2022 - 11/2022]; BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: BRAKE ACTUATOR (for Gasoline Model): REMOVAL 2023 - 2025 MY Corolla Corolla Hatchback GR Corolla [11/2022 -        ]; BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: BRAKE ACTUATOR (for Gasoline Model): REMOVAL

NG

4.

CHECK FOR SHORT TO GROUND IN STP CIRCUIT

(a) Check that there is no short to ground in the STP circuit (wire harnesses, connectors and stop lights).

OK:

There is no short to ground.

NG

REPAIR OR REPLACE MALFUNCTIONING PART
OK

5.

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

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

OK:

The connector is securely connected.

(b) Disconnect the A53 stop light switch assembly connector.

(c) Check both the connector case and the terminals for deformation and corrosion.

OK:

No deformation or corrosion.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

A53-1 (OUT) - A140-11 (STP)

Always

Below 1 Ω
OK

REPLACE STOP LIGHT SWITCH ASSEMBLY

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

6.

CHECK STOP LIGHT SWITCH ASSEMBLY

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

OK:

The connector is securely connected.

*a

Component with harness connected

(Stop Light Switch Assembly)

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

Standard Voltage:

Tester Connection

Condition

Specified Condition

A53-4 (ACC) - Body ground

Always

11 to 14 V
OK

REPAIR OR REPLACE HARNESS OR CONNECTOR
NG

REPLACE STOP LIGHT SWITCH ASSEMBLY

7.

CHECK BRAKE ACTUATOR ASSEMBLY

(a) Turn the ignition switch off.

*a

Front view of wire harness connector

(to Skid Control ECU (Brake Actuator Assembly))

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

OK:

The connector is securely connected.

(c) Disconnect the A140 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

A140-11 (STP) - Body ground

Stop light switch assembly on (Brake pedal depressed)

11 to 14 V
OK

REPLACE BRAKE ACTUATOR ASSEMBLY 2023 MY Corolla Corolla Hatchback GR Corolla [09/2022 - 11/2022]; BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: BRAKE ACTUATOR (for Gasoline Model): REMOVAL 2023 - 2025 MY Corolla Corolla Hatchback GR Corolla [11/2022 -        ]; BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: BRAKE ACTUATOR (for Gasoline Model): REMOVAL

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

8.

CHECK BRAKE ACTUATOR ASSEMBLY

(a) Turn the ignition switch off.

*a

Front view of wire harness connector

(to Skid Control ECU (Brake Actuator Assembly))

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

OK:

The connector is securely connected.

(c) Disconnect the A140 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

A140-37 (STP2) - Body ground

Stop light switch assembly off

(Brake pedal released)

Below 1.5 V
OK

REPLACE BRAKE ACTUATOR ASSEMBLY 2023 MY Corolla Corolla Hatchback GR Corolla [09/2022 - 11/2022]; BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: BRAKE ACTUATOR (for Gasoline Model): REMOVAL 2023 - 2025 MY Corolla Corolla Hatchback GR Corolla [11/2022 -        ]; BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: BRAKE ACTUATOR (for Gasoline Model): REMOVAL

NG

9.

CHECK STOP LIGHT SWITCH ASSEMBLY

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

OK:

The connector is securely connected.

*a

Front view of wire harness connector

(to Skid Control ECU (Brake Actuator Assembly))

(b) Disconnect the A53 stop light switch assembly connector.

(c) Check both the connector case and the terminals for deformation and corrosion.

OK:

No deformation or corrosion.

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

Standard Voltage:

Tester Connection

Condition

Specified Condition

A140-37 (STP2) - Body ground

Always

Below 1.5 V
OK

REPLACE STOP LIGHT SWITCH ASSEMBLY

NG

10.

CHECK FOR SHORT TO +B IN STP2 CIRCUIT

(a) Check that there is no short to +B in the STP2 circuit (wire harnesses, connectors and ECUs).

OK:

No short to +B.

OK

USE SIMULATION METHOD TO CHECK

NG

REPAIR OR REPLACE MALFUNCTIONING PART