| Last Modified: 07-31-2024 | 6.11:8.1.0 | Doc ID: RM10000000260ST |
| 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): C13807E; Stop Lamp Relay Actuator Stuck On; 2023 - 2025 MY Corolla Corolla Hatchback GR Corolla [09/2022 - ] | ||
|
DTC |
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.
|
DTC No. |
Detection Item |
DTC Detection Condition |
Trouble Area |
|---|---|---|---|
|
C13807E |
Stop Lamp Relay Actuator Stuck On |
When the IG1 terminal voltage exceeds 10 V and the +BS terminal voltage is 9.5 V or higher, stop light drive output (STPO) is OFF, STP2 is OFF and STP is ON continuously for 5 seconds or more. |
|
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
Inspect the fuses for circuits related to this system before performing the following procedure.
HINT:
When DTC P057111 and/or P057113 are output together with DTC C13807E, inspect and repair the trouble areas indicated by DTC P057111 and/or P057113 first.
for P057111: 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): P057111; Brake Switch "A" Circuit Short to Ground](/t3Portal/stylegraphics/info.gif)
for P057113: Click here
PROCEDURE
|
1. |
CHECK STOP LIGHT ILLUMINATION STATUS |
(a) With the brake pedal released, check the illumination status of the brake lights.
|
Result |
Proceed to |
|---|---|
|
The stop lights are illuminated. |
A |
|
The stop lights are not illuminated. |
B |
| B |
|
|
|
2. |
CHECK 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 A140 skid control ECU (brake actuator 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 |
|---|---|---|
|
A140-11 (STP) - Body ground |
Stop light switch assembly off (Brake pedal released) |
Below 1.5 V |
| OK |
|
REPLACE BRAKE ACTUATOR ASSEMBLY
|
|
|
3. |
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. |
|
(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 |
|---|---|---|
|
A140-11 (STP) - Body ground |
Always |
Below 1.5 V |
| OK |
|
|
|
4. |
CHECK FOR SHORT TO +B IN STP CIRCUIT |
(a) Check that there is no short to +B in the STP circuit (wire harnesses, connectors and stop lights).
OK:
No short to +B.
| OK |
|
| NG |
|
REPAIR OR REPLACE MALFUNCTIONING PART |
|
5. |
CHECK 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 A140 skid control ECU (brake actuator 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 |
Stop light switch assembly on (Brake pedal depressed) |
11 to 14 V |
| OK |
|
REPLACE BRAKE ACTUATOR ASSEMBLY
|
|
|
6. |
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 connector. OK: The connector is securely connected. |
|
(b) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
A53-3 (L) - Body ground |
Stop light switch assembly on (Brake pedal depressed) |
11 to 14 V |
| OK |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
7. |
CHECK FOR SHORT TO GROUND IN STP2 CIRCUIT |
(a) Check that there is no short to ground in the STP2 circuit (wire harnesses, connectors and ECUs)
OK:
There is no short to ground.
| OK |
|
| NG |
|
REPAIR OR REPLACE MALFUNCTIONING PART |
|
|