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 | DTC Output from |
---|---|---|---|---|
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. |
| Brake |
WIRING DIAGRAM
Refer to DTC C13807E.
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CAUTION / NOTICE / HINT
NOTICE:
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PROCEDURE
1. | READ VALUE USING GTS (STOP LIGHT SW) |
(a) Operate the GTS to check the Data List.
Chassis > Brake > Data List Tester Display | Measurement Item | Range | Normal Condition | Diagnostic Note |
---|---|---|---|---|
Stop Light SW | Stop light switch assembly (STP terminal input) | OFF / ON | OFF: Brake pedal released ON: Brake pedal depressed | HINT: The brake pedal state is determined using the voltage at terminal STP |
Tester Display |
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Stop Light SW |
(b) Check that the stop light switch display observed on the GTS changes according to brake pedal operation.
OK:
The GTS displays OFF / ON according to brake pedal operation.
NG | GO TO STEP 4 |
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2. | CLEAR DTC |
(a) Operate the GTS to clear the codes.
Chassis > Brake > Clear DTCs(b) Press the DTC clear button.
(c) Turn the ignition switch off.
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3. | RECONFIRM DTC |
(a) Operate the GTS to read the DTCs.
Chassis > Brake > Trouble Codes(b) Check if the same DTC is output.
Result | Proceed to |
---|---|
P057113 is not output | A |
P057113 is output | B |
A | USE SIMULATION METHOD TO CHECK |
B | REPLACE BRAKE ACTUATOR ASSEMBLY |
4. | CHECK HARNESS AND CONNECTOR (STP TERMINAL) |
(a) Turn the ignition switch off.
(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 A108 skid control ECU (brake actuator assembly) connector. |
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(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 |
---|---|---|
A108-35 (STP) - Body ground | Stop light switch assembly on (Brake pedal depressed) | 8 to 14 V |
A108-35 (STP) - Body ground | Stop light switch assembly off (Brake pedal released) | Below 1.5 V |
OK | REPLACE BRAKE ACTUATOR ASSEMBLY |
NG | REPAIR OR REPLACE HARNESS OR CONNECTOR |
Before refueling, close all the doors, windows, and the liftgate/trunk lid, and switch the ignition OFF.
To open the fuel-filler lid, pull the remote fuel-filler lid release.To remove the fuel-filler cap, turn it counterclockwise. Attach the removed cap to the inner side of the fuel-filler lid.