Last Modified: 05-13-2024 6.11:8.1.0 Doc ID: RM100000002643U
Model Year Start: 2023 Model: GR Corolla Prod Date Range: [09/2022 - 11/2022]
Title: ADVANCED DRIVER ASSISTANCE SYSTEM: DYNAMIC RADAR CRUISE CONTROL SYSTEM (for TMMMS Made): P057162; Brake Switch "A" Signal Compare Failure; 2023 MY Corolla Corolla Hatchback Corolla HV GR Corolla [09/2022 - 11/2022]

DTC

P057162

Brake Switch "A" Signal Compare Failure

DESCRIPTION

When the brake pedal is depressed, the stop light switch assembly outputs a signal to the ECM. The ECM uses this signal to control cancellation of vehicle speed by the dynamic radar cruise control. When the ECM determines that terminals STP and ST1 of the stop light switch assembly are both less than 1 V, DTC P057162 is stored.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

MIL

DTC Output from

P057162

Brake Switch "A" Signal Compare Failure

When the ignition switch is ON and the dynamic radar cruise control system is operating, the ECM detects that the voltage at terminal STP and ST1- are both less than 1 V for approximately 0.5 seconds or more.

  • Harness or connector
  • Stop light switch assembly
  • ECM

Does not come on

Cruise Control

WIRING DIAGRAM

CAUTION / NOTICE / HINT

NOTICE:

  • Inspect the fuses for circuits related to this system before performing the following procedure.
  • Before replacing the ECM, refer to Registration.

    w/o Smart Key System: Click here 2023 MY Corolla Corolla Hatchback Corolla HV GR Corolla [09/2022 - 11/2022]; THEFT DETERRENT / KEYLESS ENTRY: IMMOBILISER SYSTEM (w/o Smart Key System): REGISTRATION

    w/ Smart Key System: Click here 2023 MY Corolla Corolla Hatchback GR Corolla [09/2022 - 11/2022]; THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM (for Start Function (Gasoline Model, TMMMS Made)): REGISTRATION

PROCEDURE

1.

CHECK HARNESS AND CONNECTOR (STOP LIGHT SWITCH ASSEMBLY - AUXILIARY BATTERY AND BODY GROUND)

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

*a

Front view of wire harness connector

(to Stop Light Switch Assembly)

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

A53-2 (GND) - Body ground

Always

Below 1 Ω

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

Standard Voltage:

Tester Connection

Condition

Specified Condition

A53-7 (B) - Body ground

Ignition switch off

11 to 14 V

A53-6 (B) - Body ground

Ignition switch ON

11 to 14 V

A53-6 (B) - Body ground

Ignition switch off

Below 1 V

(d) Connect the A53 stop light switch assembly connector.

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

OK

2.

INSPECT STOP LIGHT SWITCH ASSEMBLY

(a) Inspect the stop light switch assembly.

Click here 2020 - 2025 MY Corolla Corolla Hatchback Corolla HV GR Corolla [01/2019 -        ]; LIGHTING (EXT): STOP LIGHT SWITCH: ON-VEHICLE INSPECTION

NG

REPLACE STOP LIGHT SWITCH ASSEMBLY

OK

3.

CHECK HARNESS AND CONNECTOR (ECM - STOP LIGHT SWITCH ASSEMBLY)

(a) Disconnect the A47 ECM connector.

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

(c) Disconnect the A51 skid control ECU (brake actuator assembly) connector.

(d) Disconnect the O61 certification ECU (smart key ECU assembly) connector.*

(e) Disconnect the I17 shift lock control ECU (shift lock control unit assembly) connector.*

(f) Disconnect the C80 TCM connector.*

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

A47-22 (ST1-) - A53-5 (L)

Always

Below 1 Ω

A47-21 (STP) - A53-3 (L)

Always

Below 1 Ω

A47-22 (ST1-) or A53-5 (L) - Body ground

Always

10 kΩ or higher

A47-21 (STP) or A53-3 (L) - Body ground

Always

10 kΩ or higher

(h) Connect the C80 TCM connector.*

(i) Connect the I17 shift lock control ECU (shift lock control unit assembly) connector.*

(j) Connect the O61 certification ECU (smart key ECU assembly) connector.*

(k) Connect the A51 skid control ECU (brake actuator assembly) connector.

(l) Connect the A53 stop light switch assembly connector.

(m) Connect the A47 ECM connector.

  • *: w/ Smart Key System
OK

REPLACE ECM

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR