Last Modified: 04-05-2023 6.11:8.1.0 Doc ID: RM100000000WPI2
Model Year Start: 2016 Model: Sienna Prod Date Range: [12/2015 -           ]
Title: THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM(for Start Function): HOW TO PROCEED WITH TROUBLESHOOTING; 2016 - 2020 MY Sienna [12/2015 -        ]

HOW TO PROCEED WITH TROUBLESHOOTING

CAUTION / NOTICE / HINT

HINT:

  • Use the following procedure to troubleshoot the start function.
  • *: Use the Techstream.

PROCEDURE

1.

VEHICLE BROUGHT TO WORKSHOP

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2.

CUSTOMER PROBLEM ANALYSIS

HINT:

  • In troubleshooting, confirm that the problem symptoms have been accurately identified. Preconceptions should be discarded in order to make an accurate judgment. To clearly understand what the problem symptoms are, it is extremely important to ask the customer about the problem and the conditions at the time the malfunction occurred.
  • Gather as much information as possible for reference. Past problems that seem unrelated may also help in some cases.
  • The following 5 items are important points in the problem analysis:

    What

    Vehicle model, system name

    When

    Date, time, occurrence frequency

    Where

    Road conditions

    Under what conditions?

    Running conditions, driving conditions, weather conditions

    How did it happen?

    Problem symptoms

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3.

INSPECT BATTERY VOLTAGE

Standard voltage:

11 to 14 V

If the voltage is below 11 V, recharge or replace the battery before proceeding to the next step.

NEXT

4.

CHECK CAN COMMUNICATION SYSTEM*

(a) Use the Techstream to check if the CAN communication system is functioning normally.

Click here 2016 MY Sienna [12/2015 - 08/2016]; NETWORKING: CAN COMMUNICATION SYSTEM: DIAGNOSIS SYSTEM 2017 MY Sienna [08/2016 - 11/2017]; NETWORKING: CAN COMMUNICATION SYSTEM: DIAGNOSIS SYSTEM 2018 MY Sienna [11/2017 - 08/2018]; NETWORKING: CAN COMMUNICATION SYSTEM: DIAGNOSIS SYSTEM 2019 - 2020 MY Sienna [08/2018 -        ]; NETWORKING: CAN COMMUNICATION SYSTEM: DIAGNOSIS SYSTEM

Result

Proceed to

CAN communication DTC is not output

A

CAN communication DTC is output

B

B

Go To CAN COMMUNICATION SYSTEM 2016 MY Sienna [12/2015 - 08/2016]; NETWORKING: CAN COMMUNICATION SYSTEM: HOW TO PROCEED WITH TROUBLESHOOTING 2017 MY Sienna [08/2016 - 11/2017]; NETWORKING: CAN COMMUNICATION SYSTEM: HOW TO PROCEED WITH TROUBLESHOOTING 2018 - 2020 MY Sienna [11/2017 -        ]; NETWORKING: CAN COMMUNICATION SYSTEM: HOW TO PROCEED WITH TROUBLESHOOTING

A

5.

CHECK LIN COMMUNICATION SYSTEM*

(a) Use the Techstream to check if the (LIN) is functioning normally.

Click here 2016 - 2020 MY Sienna [12/2015 -        ]; NETWORKING: LIN COMMUNICATION SYSTEM: DTC CHECK / CLEAR

Result

Proceed to

LIN Communication DTC is not output

A

LIN Communication DTC is output

B

B

Go To LIN COMMUNICATION SYSTEM 2016 - 2017 MY Sienna [12/2015 - 11/2017]; NETWORKING: LIN COMMUNICATION SYSTEM: DIAGNOSTIC TROUBLE CODE CHART 2018 - 2020 MY Sienna [11/2017 -        ]; NETWORKING: LIN COMMUNICATION SYSTEM: DIAGNOSTIC TROUBLE CODE CHART

A

6.

CHECK FOR DTC*

(a) Check for DTC and note any codes that are output.

Click here 2016 - 2020 MY Sienna [12/2015 -        ]; THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM(for Start Function): DTC CHECK / CLEAR

(b) Clear the DTC.

(c) Recheck for DTC.

Result

Proceed to

DTC is not output

A

DTC is output

B

B

Go To DIAGNOSTIC TROUBLE CODE CHART 2016 MY Sienna [12/2015 - 08/2016]; THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM(for Start Function): DIAGNOSTIC TROUBLE CODE CHART 2017 - 2020 MY Sienna [08/2016 -        ]; THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM(for Start Function): DIAGNOSTIC TROUBLE CODE CHART

A

7.

INSPECT BASIC OPERATION

(a) Check that the engine starts normally when the engine switch is pushed while the brake pedal is depressed and the shift lever is in P.

(b) Check that the power source mode can be changed by pushing the engine switch.

HINT:

Without depressing the brake pedal, push the engine switch repeatedly. The power source mode should change from off to on (ACC), to on (IG) and back to off. With the brake pedal depressed, push the engine switch. The engine should start regardless of the original powersource mode.

OK:

Engine can start normally.

NEXT

8.

PROBLEM SYMPTOMS TABLE

Result

Proceed to

Fault is not listed in Problem Symptoms Table

A

Fault is listed in Problem Symptoms Table

B

B

GO TO STEP 10

A

9.

OVERALL ANALYSIS AND TROUBLESHOOTING*

(a) Terminals of ECU

Click here 2016 - 2020 MY Sienna [12/2015 -        ]; THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM(for Start Function): TERMINALS OF ECU

(b) Data List / Active Test

Click here 2016 - 2020 MY Sienna [12/2015 -        ]; THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM(for Start Function): DATA LIST / ACTIVE TEST

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10.

REPAIR OR REPLACE

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11.

CONFIRMATION TEST

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END