Last Modified: 04-05-2023 6.11:8.1.0 Doc ID: RM100000001918U
Model Year Start: 2018 Model: Sienna Prod Date Range: [11/2017 -           ]
Title: CRUISE CONTROL: CRUISE CONTROL SYSTEM: P057162; Brake Switch "A" Signal Compare Failure; 2018 - 2020 MY Sienna [11/2017 -        ]

DTC

P057162

Brake Switch "A" Signal Compare Failure

DESCRIPTION

When the brake pedal is depressed, stop light switch assembly sends a signal to the ECM. Upon receiving the signal, the ECM cancels the cruise control system.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

P057162

Brake Switch "A" Signal Compare Failure

Vehicle Condition: Ignition switch to ON cruise control main switch on

Malfunction Status: Stop light switch assembly malfunction input signal

  • Stop light switch assembly
  • Harness or connector
  • ECM

WIRING DIAGRAM

CAUTION / NOTICE / HINT

NOTICE:

Inspect the fuses for circuits related to this system before performing the following procedure.

PROCEDURE

1.

CHECK TERMINAL VOLTAGE (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 voltage according to the value(s) in the table below.

Standard Voltage:

Tester Connection

Condition

Specified Condition

A58-2 - Body ground

Always

11 to 14 V

A58-4 - Body ground

Ignition switch ON

11 to 14 V

A58-4 - Body ground

Ignition switch off

Below 1 V

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

OK

2.

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

(a) Disconnect the A69 ECM connector.

(b) Disconnect the A58 stop light switch assembly connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

A69-42 (ST1-) - A58-3

Always

Below 1 Ω

A69-27 (STP) - A58-1

Always

Below 1 Ω

A69-42 (ST1-) or A58-3 - Body ground

Always

10 kΩ or higher

A69-27 (STP) or A58-1 - Body ground

Always

10 kΩ or higher

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

OK

3.

REPLACE STOP LIGHT SWITCH ASSEMBLY

(a) Replace the stop light switch assembly.

(See page 2016 - 2020 MY Sienna [12/2015 -        ]; LIGHTING (EXT): STOP LIGHT SWITCH: REMOVAL )

NEXT

4.

CHECK FOR DTCs

(a) Clear the DTCs.

(See page 2016 - 2020 MY Sienna [12/2015 -        ]; CRUISE CONTROL: CRUISE CONTROL SYSTEM: DTC CHECK / CLEAR )

(b) Perform the following to make sure that the DTC detection conditions are met.

HINT:

If the detection conditions are not met, the malfunction cannot be detected.

(1) Turn the cruise control system on using the cruise control main switch (ON/OFF).

(c) Check for DTCs.

(See page 2016 - 2020 MY Sienna [12/2015 -        ]; CRUISE CONTROL: CRUISE CONTROL SYSTEM: DTC CHECK / CLEAR )

Result

Proceed to

DTC P057162 is not output

A

DTC P057162 is output

B

A

END (STOP LIGHT SWITCH ASSEMBLY WAS DEFECTIVE)

B

REPLACE ECM