Last Modified: 04-05-2023 6.11:8.1.0 Doc ID: RM100000000ZMV7
Model Year Start: 2017 Model: Sienna Prod Date Range: [08/2016 -           ]
Title: THEFT DETERRENT / KEYLESS ENTRY: ENGINE IMMOBILISER SYSTEM(w/o Smart Key System): B279C95; Engine Immobiliser System Incorrect Assembly; 2017 - 2020 MY Sienna [08/2016 -        ]

DTC

B279C95

Engine Immobiliser System Incorrect Assembly

DESCRIPTION

If an ECM that is incompatible with the engine immobiliser system is installed, the ECM stores this DTC.

DTC No.

DTC Detection Condition

Trouble Area

B279C95

An ECM that is incompatible with engine immobiliser system is installed.

ECM

CAUTION / NOTICE / HINT

NOTICE:

If the ECM is replaced, register the ECU communication ID (See page 2016 - 2020 MY Sienna [12/2015 -        ]; THEFT DETERRENT / KEYLESS ENTRY: ENGINE IMMOBILISER SYSTEM(w/o Smart Key System): REGISTRATION ).

PROCEDURE

1.

CHECK DTC OUTPUT

(a) Clear the DTCs (See page 2017 - 2020 MY Sienna [08/2016 -        ]; THEFT DETERRENT / KEYLESS ENTRY: ENGINE IMMOBILISER SYSTEM(w/o Smart Key System): DTC CHECK / CLEAR ).

(b) Recheck for DTCs (See page 2017 - 2020 MY Sienna [08/2016 -        ]; THEFT DETERRENT / KEYLESS ENTRY: ENGINE IMMOBILISER SYSTEM(w/o Smart Key System): DTC CHECK / CLEAR ).

OK:

DTC B279C95 is not output.

OK

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 )

NG

REPLACE ECM