Last Modified: 04-05-2023 6.11:8.1.0 Doc ID: RM100000000ZNF4
Model Year Start: 2017 Model: Sienna Prod Date Range: [08/2016 -           ]
Title: THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM(for Start Function): PROBLEM SYMPTOMS TABLE; 2017 - 2020 MY Sienna [08/2016 -        ]

PROBLEM SYMPTOMS TABLE

HINT:

Use the table below to help determine the cause of problem symptoms. If multiple suspected areas are listed, the potential causes of the symptoms are listed in order of probability in the "Suspected Area" column of the table. Check each symptom by checking the suspected areas in the order they are listed. Replace parts as necessary.

Smart Key System (for Start Function)

Symptom

Suspected Area

See page

Power Source Mode does not Change to ON (IG and ACC)

Refer to "Power Source Mode does not Change to ON (IG and ACC)"

2017 - 2020 MY Sienna [08/2016 -        ]; THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM(for Start Function): Power Source Mode does not Change to ON (IG and ACC)

Smart key system (for Entry function)

-

AM2 No.2 fuse

-

Power management control ECU

-

Engine switch

-

Wire harness or connector

-

Power Source Mode does not Change to ON (IG)

Refer to "Power Source Mode does not Change to ON (IG)"

2017 - 2020 MY Sienna [08/2016 -        ]; THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM(for Start Function): Power Source Mode does not Change to ON (IG)

AM2 No.2 fuse

-

IG1 relay

-

IG2 relay

-

Instrument panel junction block assembly

-

Engine room relay block

-

Power management control ECU

-

Wire harness or connector

-

Power Source Mode does not Change to ON (ACC)

Refer to "Power Source Mode does not Change to ON (ACC)"

2016 - 2020 MY Sienna [12/2015 -        ]; THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM(for Start Function): Power Source Mode does not Change to ON (ACC)

AM2 No.2 fuse

-

ACC relay

-

Instrument panel junction block assembly

-

Power management control ECU

-

Wire harness or connector

-

Engine does not Start

Refer to "Engine does not Start"

2017 - 2020 MY Sienna [08/2016 -        ]; THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM(for Start Function): Engine does not Start

Smart key system (for Entry function)

-

Starter relay

-

Engine room relay block

-

Park/neutral position switch

-

Engine immobiliser system

-

Steering lock system

-

SFI system

-

Power management control ECU

-

Wire harness or connector

-