Last Modified: 05-13-2024 |
6.11:8.1.0 |
Doc ID: RM10000000260SF |
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): P057113; Brake Switch "A" Circuit Open; 2023 - 2025 MY Corolla Corolla Hatchback GR Corolla [09/2022 - ] |
DTC
|
P057113
|
Brake Switch "A" Circuit Open
|
DESCRIPTION
The skid control ECU (brake actuator assembly) detects the brake operating conditions through a signal transmitted by the stop light switch.
The skid control ECU incorporates a circuit to detect an open circuit.
This DTC is output when an open circuit is detected in the stop light signal input line.
DTC No.
|
Detection Item
|
DTC Detection Condition
|
Trouble Area
|
P057113
|
Brake Switch "A" Circuit Open
|
When the +BS terminal voltage is 9.5 V or more, an open is detected in the STP terminal circuit for 0.3 seconds or more and the stop light drive output (STPO) is off for 0.1 seconds or more.
|
-
Wire harness and connector
-
Skid control ECU (Brake actuator assembly)
-
Stop light switch assembly
-
STP circuit
|
WIRING DIAGRAM
Refer to DTC C13807E.
Click here
CAUTION / NOTICE / HINT
NOTICE:
Inspect the fuses for circuits related to this system before performing the following procedure.
PROCEDURE
1.
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CHECK STOP LIGHT OPERATION
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(a) Check that the stop lights come on when the brake pedal is depressed.
Result
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Proceed to
|
All stop lights illuminate when the brake pedal is depressed and turn off when the brake pedal is released.
|
A
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All stop lights do not illuminate when the brake pedal is depressed.
|
B
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One or more stop lights illuminate when the brake pedal is depressed but remain on when the brake pedal is released.
|
C
|
A
|
|
|
2.
|
READ VALUE USING GTS (Stop Light SW)
|
(a) Check the value of Stop Light SW when the brake pedal is depressed.
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.
|
Chassis > Brake/EPB > Data List
Tester Display
|
Stop Light SW
|
Result
|
Proceed to
|
The value of Stop Light SW is ON.
|
A
|
Other than above.
|
B
|
A
|
|
|
3.
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STOP LIGHT SWITCH ASSEMBLY OUTPUT CIRCUIT INSPECTION
|
(a) Turn the ignition switch off.
|
|
*a
|
Component with harness connected
(Stop Light Switch Assembly)
|
|
|
(b) Make sure that there is no looseness at the locking part and the connecting part of the connector.
OK:
The connector is securely connected.
(c) Turn the ignition switch to ON.
(d) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
Tester Connection
|
Condition
|
Specified Condition
|
A53-1 (OUT) - Body ground
|
-
Ignition switch ON
-
The headlights are on
-
The blower motor switch is in the HI position
-
The rear window defogger is turned on
-
Stop light switch assembly off (Brake pedal released)
|
Below 1.5 V
|
OK
|
|
|
(a) Clear the DTCs.
Chassis > Brake/EPB > Clear DTCs
(b) Turn the ignition switch off.
NEXT
|
|
|
(a) Based on the Freeze Frame Data and interview with the customer, attempt to reproduce the conditions when the malfunction occurred.
(b) Check if the same DTC is output.
Chassis > Brake/EPB > Trouble Codes
Result
|
Proceed to
|
DTC P057113 is not output.
|
A
|
DTC P057113 is output.
|
B
|
6.
|
CHECK STOP LIGHT SWITCH ASSEMBLY
|
(a) Turn the ignition switch off.
|
|
*a
|
Front view of wire harness connector
(to Stop Light Switch Assembly)
|
|
|
(b) Make sure that there is no looseness at the locking part and the connecting part of the connector.
OK:
The connector is securely connected.
(c) Disconnect the A53 stop light switch 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
|
A53-1 (OUT) - Body ground
|
Stop light switch assembly off
(Brake pedal released)
|
Below 1.5 V
|
NG
|
|
|
7.
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CHECK 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.
|
|
*a
|
Front view of wire harness connector
(to Stop Light Switch Assembly)
|
|
|
(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
|
A53-1 (OUT) - Body ground
|
Stop light switch assembly off
(Brake pedal released)
|
Below 1.5 V
|
NG
|
|
|
8.
|
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.
NG |
|
REPAIR OR REPLACE MALFUNCTIONING PART
|
9.
|
CHECK HARNESS AND CONNECTOR (STP TERMINAL)
|
(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 connector.
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
|
NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR
|
10.
|
CHECK HARNESS AND CONNECTOR (STOP LIGHT SWITCH ASSEMBLY - STOP LIGHT)
|
(a) Check that there is no open in the wire harnesses and connectors from terminal OUT of the stop light switch assembly to the stop lights.
OK:
No open.
NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR
|
|