Last Modified: 01-30-2024 6.11:8.1.0 Doc ID: RM100000001HU7W
Model Year Start: 2019 Model: RAV4 HV Prod Date Range: [02/2019 - 12/2021]
Title: CRUISE CONTROL: DYNAMIC RADAR CRUISE CONTROL SYSTEM (for HV Model): P057162; Brake Switch "A" Signal Compare Failure; 2019 - 2021 MY RAV4 HV [02/2019 - 12/2021]

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 hybrid vehicle control ECU assembly. The hybrid vehicle control ECU assembly uses this signal to control cancellation of vehicle speed by the dynamic radar cruise control. When the hybrid vehicle control ECU assembly 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 hybrid vehicle control ECU assembly 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
  • Hybrid vehicle control ECU assembly

Does not come on

Radar Cruise1

WIRING DIAGRAM

CAUTION / NOTICE / HINT

NOTICE:

  • Inspect the fuses for circuits related to this system before performing the following procedure.
  • Before replacing the hybrid vehicle control ECU assembly, refer to Registration.

    Click here 2019 MY RAV4 HV [11/2018 - 10/2019]; THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM (for Start Function, HV Model): REGISTRATION 2020 - 2021 MY RAV4 HV [10/2019 - 12/2021]; THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM (for Start Function, HV Model): REGISTRATION

PROCEDURE

1.

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

(a) Disconnect the 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

A40-2 (GND) - Body ground

Always

Below 1 Ω

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

Standard Voltage:

Tester Connection

Switch Condition

Specified Condition

A40-7 (B) - Body ground

Ignition switch off

11 to 14 V

A40-6 (B) - Body ground

Ignition switch ON

11 to 14 V

A40-6 (B) - Body ground

Ignition switch off

Below 1 V

(d) Connect the 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 2019 - 2024 MY RAV4 RAV4 HV [11/2018 -        ]; LIGHTING (EXT): STOP LIGHT SWITCH: ON-VEHICLE INSPECTION

NG

REPLACE STOP LIGHT SWITCH ASSEMBLY

OK

3.

CHECK HARNESS AND CONNECTOR (HYBRID VEHICLE CONTROL ECU ASSEMBLY - STOP LIGHT SWITCH ASSEMBLY)

(a) Disconnect the A29 and A31 hybrid vehicle control ECU assembly connectors.

(b) Disconnect the A40 stop light switch assembly connector.

(c) Disconnect the A42 skid control ECU (brake booster with master cylinder assembly) connector.

(d) Disconnect the M7 certification ECU (smart key ECU assembly) connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

A31-28 (ST1-) - A40-5 (L)

Always

Below 1 Ω

A29-7 (STP) - A40-3 (L)

Always

Below 1 Ω

A31-28 (ST1-) or A40-5 (L) - Body ground

Always

10 kΩ or higher

A29-7 (STP) or A40-3 (L) - Body ground

Always

10 kΩ or higher

(f) Connect the M7 certification ECU (smart key ECU assembly) connector.

(g) Connect the A42 skid control ECU (brake booster with master cylinder assembly) connector.

(h) Connect the A40 stop light switch assembly connector.

(i) Connect the A29 and A31 hybrid vehicle control ECU assembly connectors.

OK

REPLACE HYBRID VEHICLE CONTROL ECU ASSEMBLY 2019 MY RAV4 HV [02/2019 - 10/2019]; HYBRID / BATTERY CONTROL: HYBRID VEHICLE CONTROL ECU: REMOVAL 2020 MY RAV4 HV [10/2019 - 08/2020]; HYBRID / BATTERY CONTROL: HYBRID VEHICLE CONTROL ECU: REMOVAL 2021 MY RAV4 HV [08/2020 - 12/2021]; HYBRID / BATTERY CONTROL: HYBRID VEHICLE CONTROL ECU: REMOVAL

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR