Last Modified: 05-13-2024 |
6.11:8.1.0 |
Doc ID: RM1000000028KAA |
Model Year Start: 2023 |
Model: GR Corolla |
Prod Date Range: [11/2022 - 03/2023] |
Title: THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM (for Start Function, Gasoline Model): P057162; Brake Switch "A" Signal Compare Failure; 2023 MY Corolla Corolla Hatchback GR Corolla [11/2022 - 03/2023] |
DTC
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P057162
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Brake Switch "A" Signal Compare Failure
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DESCRIPTION
This DTC is stored when the brake signal sent via direct line and the brake signal sent via CAN communication do not match.
DTC No.
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Detection Item
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DTC Detection Condition
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Trouble Area
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Note
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P057162
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Brake Switch "A" Signal Compare Failure
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The brake signal sent via direct line and the brake signal sent via CAN communication do not match. (1-trip detection logic*)
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-
Electronically controlled brake system
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Stop light switch assembly
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Certification ECU (smart key ECU assembly)
-
Wire harness or connector
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DTC Output Confirmation Operation:
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Connect the cable to the negative (-) auxiliary battery terminal, release the brake pedal and wait at least 20 seconds. Then depress the brake pedal for 20 seconds or more.
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-
*: Only detected while a malfunction is present and the ignition switch is ON.
Vehicle Condition and Fail-safe Function when Malfunction Detected
Vehicle Condition when Malfunction Detected
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Fail-safe Function when Malfunction Detected
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-
If there is a malfunction when the brake signal sent via direct line is on, the engine can be started by pressing the engine switch with the brake pedal released.
-
If there is a malfunction when the brake signal sent via direct line is off, the engine cannot be started by pressing the engine switch with the brake pedal depressed.
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With the electrical key transmitter sub-assembly in the cabin, even if an engine start operation is performed, the engine does not start (the key indicator display is not displayed on the multi-information display). However, the engine can be started by turning the ignition switch to ACC and then pressing and holding it.
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-
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Related Data List and Active Test Items
DTC No.
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Data List and Active Test
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P057162
|
|
WIRING DIAGRAM
CAUTION / NOTICE / HINT
PROCEDURE
1.
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READ VALUE USING GTS (STOP LIGHT SWITCH)
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(a) Read the Data List according to the display on the GTS.
Body Electrical > Power Source Control > Data List
Tester Display
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Measurement Item
|
Range
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Normal Condition
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Diagnostic Note
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Stop Light Switch
|
State of brake pedal
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OFF or ON
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OFF: Brake pedal released
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-
Use this item to determine if the stop light switch assembly is malfunctioning.
-
The engine cannot be started when this item is OFF.
-
If the stop light switch assembly is malfunctioning, the engine can be started by pressing and holding the engine switch for a certain period of time.
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Body Electrical > Power Source Control > Data List
Tester Display
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Stop Light Switch
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OK:
The GTS display changes correctly in response to the brake pedal operation.
Result
|
Proceed to
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The value of Stop Light Switch is OFF
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A
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The value of Stop Light Switch is not OFF
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B
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A
|
|
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2.
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READ VALUE USING GTS (STOP LIGHT SWITCH)
|
(a) Read the Data List according to the display on the GTS.
Body Electrical > Power Source Control > Data List
Tester Display
|
Measurement Item
|
Range
|
Normal Condition
|
Diagnostic Note
|
Stop Light Switch
|
State of brake pedal
|
OFF or ON
|
ON: Brake pedal depressed
|
-
Use this item to determine if the stop light switch assembly is malfunctioning.
-
The engine cannot be started when this item is OFF.
-
If the stop light switch assembly is malfunctioning, the engine can be started by pressing and holding the engine switch for a certain period of time.
|
Body Electrical > Power Source Control > Data List
Tester Display
|
Stop Light Switch
|
OK:
The GTS display changes correctly in response to the brake pedal operation.
Result
|
Proceed to
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The value of Stop Light Switch is ON
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A
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The value of Stop Light Switch is not ON
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B
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A |
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GO TO ELECTRONICALLY CONTROLLED BRAKE SYSTEM (HOW TO PROCEED WITH TROUBLESHOOTING)
w/ Electric Parking Brake System: Click here
w/o Electric Parking Brake System: Click here
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B
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|
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3.
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CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) - STOP LIGHT SWITCH ASSEMBLY)
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Pre-procedure1
(a) Disconnect the O175 certification ECU (smart key ECU assembly) connector.
(b) Disconnect the A53 stop light switch assembly connector.
(c) Disconnect the A51 skid control ECU (brake actuator assembly) connector.
(d) Disconnect the A47 ECM connector.
(e) Disconnect the I17 shift lock control unit assembly connector.
(f) Disconnect the C80 TCM connector.
Procedure1
(g) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection
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Condition
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Specified Condition
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O175-21 (STP1) - A53-3 (L)
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Always
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Below 1 Ω
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Post-procedure1
(h) None
NG |
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REPAIR OR REPLACE HARNESS OR CONNECTOR
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OK
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|
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4.
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CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)
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Pre-procedure1
(a) Connect the O175 certification ECU (smart key ECU assembly) connector.
(b) Connect the A53 stop light switch assembly connector.
Procedure1
(c) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
Tester Connection
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Condition
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Specified Condition
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O175-21 (STP1) - Body ground
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Brake pedal released
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1 V or less
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O175-21 (STP1) - Body ground
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Brake pedal depressed
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9 V or higher
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Result:
|
|
*a
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Component with harness connected
(Certification ECU (Smart Key ECU Assembly))
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|
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Post-procedure1
(d) None
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