Last Modified: 04-05-2023 6.11:8.1.0 Doc ID: RM1000000010RW9
Model Year Start: 2017 Model: Sienna Prod Date Range: [08/2016 -           ]
Title: CRUISE CONTROL: CRUISE CONTROL SYSTEM: P057504,P057549; Cruise Control System Internal Failure; 2017 - 2020 MY Sienna [08/2016 -        ]

DTC

P057504

Cruise Control System Internal Failure

DTC

P057549

Cruise Control Internal Electronic Failure

DESCRIPTION

This is output when the ECM detects malfunctions in the internal circuit.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

P057504

Cruise Control System Internal Failure

Vehicle Condition: Cruise control in

Malfunction Status: ECM internal cancel circuit malfunction

ECM

P057549

Cruise Control Internal Electronic Failure

Vehicle Condition: Cruise control in

Malfunction Status: ECM internal stop light switch circuit malfunction

ECM

PROCEDURE

1.

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) Drive the vehicle at a speed for which cruise control operation is possible.

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

(3) Push the cruise control main switch to -SET to begin control of vehicle speed using the cruise control system.

(c) Check the DTCs.

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

Result

Proceed to

DTC P057504 and P057549 are not output

A

DTC P057504 or P057549 is output

B

A

USE SIMULATION METHOD TO CHECK

(See page 2017 MY Sienna [08/2016 - 11/2017]; INTRODUCTION: HOW TO TROUBLESHOOT ECU CONTROLLED SYSTEMS: HOW TO PROCEED WITH TROUBLESHOOTING 2018 - 2020 MY Sienna [11/2017 -        ]; INTRODUCTION: HOW TO TROUBLESHOOT ECU CONTROLLED SYSTEMS: HOW TO PROCEED WITH TROUBLESHOOTING )

B

REPLACE ECM