Last Modified: 04-05-2023 6.11:8.1.0 Doc ID: RM100000000ZL6H
Model Year Start: 2017 Model: Sienna Prod Date Range: [08/2016 -           ]
Title: THEFT DETERRENT / KEYLESS ENTRY: ENGINE IMMOBILISER SYSTEM(w/ Smart Key System): 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.
  • Inspect the fuses and relays related to this system before inspecting the suspected areas below.

Engine Immobiliser System

Symptom

Suspected Area

See page

Engine does not start.

Key

2016 - 2020 MY Sienna [12/2015 -        ]; THEFT DETERRENT / KEYLESS ENTRY: ENGINE IMMOBILISER SYSTEM(w/ Smart Key System): DATA LIST / ACTIVE TEST

Unable to Unlock Steering Wheel

(Engine cannot Start)

2016 - 2020 MY Sienna [12/2015 -        ]; STEERING COLUMN: STEERING LOCK SYSTEM: Unable to Unlock Steering Wheel (Engine cannot Start)

Smart key system (for start function)

2016 - 2020 MY Sienna [12/2015 -        ]; THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM(for Start Function): HOW TO PROCEED WITH TROUBLESHOOTING

SFI system

2017 - 2020 MY Sienna [08/2016 -        ]; 2GR-FKS (ENGINE CONTROL): SFI SYSTEM: HOW TO PROCEED WITH TROUBLESHOOTING

Security indicator light is always on.

Certification ECU

2016 - 2020 MY Sienna [12/2015 -        ]; THEFT DETERRENT / KEYLESS ENTRY: ENGINE IMMOBILISER SYSTEM(w/ Smart Key System): Security Indicator Light Circuit

Wire harness or connector

-

Combination meter assembly

-

Security indicator light is off.

Certification ECU

2016 - 2020 MY Sienna [12/2015 -        ]; THEFT DETERRENT / KEYLESS ENTRY: ENGINE IMMOBILISER SYSTEM(w/ Smart Key System): Security Indicator Light Circuit

Wire harness or connector

-

Combination meter assembly

-