Last Modified: 08-28-2024 6.11:8.1.0 Doc ID: RM100000000VJKT
Model Year Start: 2016 Model: Sienna Prod Date Range: [12/2015 - 08/2016]
Title: THEFT DETERRENT / KEYLESS ENTRY: ENGINE IMMOBILISER SYSTEM(w/o Smart Key System): DIAGNOSTIC TROUBLE CODE CHART; 2016 MY Sienna [12/2015 - 08/2016]

DIAGNOSTIC TROUBLE CODE CHART

1. TRANSPONDER KEY ECU DIAGNOSTIC TROUBLE CODE CHART

HINT:

If a trouble code is stored during the DTC check, inspect the trouble areas listed for that code. For details of the code, refer to "See page" below.

Transponder Key ECU

DTC Code

Detection Item

Trouble Area

See page

B2780

Push Switch / Key Unlock Warning Switch Malfunction

- Wire harness connector

- Unlock warning switch assembly

- Transponder key ECU assembly

2016 - 2020 MY Sienna [12/2015 -        ]; THEFT DETERRENT / KEYLESS ENTRY: ENGINE IMMOBILISER SYSTEM(w/o Smart Key System): B2780; Push Switch / Key Unlock Warning Switch Malfunction

B2784

Antenna Coil Open / Short

- Wire harness connector

- Transponder key coil

- Transponder key ECU assembly

2016 - 2020 MY Sienna [12/2015 -        ]; THEFT DETERRENT / KEYLESS ENTRY: ENGINE IMMOBILISER SYSTEM(w/o Smart Key System): B2784; Antenna Coil Open / Short

B2793

Transponder Chip Malfunction

Key

2016 - 2020 MY Sienna [12/2015 -        ]; THEFT DETERRENT / KEYLESS ENTRY: ENGINE IMMOBILISER SYSTEM(w/o Smart Key System): B2793; Transponder Chip Malfunction

B2794

Unmatched Encryption Code

Key

2016 - 2020 MY Sienna [12/2015 -        ]; THEFT DETERRENT / KEYLESS ENTRY: ENGINE IMMOBILISER SYSTEM(w/o Smart Key System): B2794,B2797,B2798; Unmatched Encryption Code

B2795

Unmatched Key Code

Key

2016 - 2020 MY Sienna [12/2015 -        ]; THEFT DETERRENT / KEYLESS ENTRY: ENGINE IMMOBILISER SYSTEM(w/o Smart Key System): B2795; Unmatched Key Code

B2796

No Communication in Immobiliser System

- Key

- Transponder key coil

- Transponder key ECU assembly

2016 - 2020 MY Sienna [12/2015 -        ]; THEFT DETERRENT / KEYLESS ENTRY: ENGINE IMMOBILISER SYSTEM(w/o Smart Key System): B2796; No Communication in Immobiliser System

B2797

Communication Malfunction No. 1

- Key

- Transponder key coil

- Transponder key ECU assembly

2016 - 2020 MY Sienna [12/2015 -        ]; THEFT DETERRENT / KEYLESS ENTRY: ENGINE IMMOBILISER SYSTEM(w/o Smart Key System): B2794,B2797,B2798; Unmatched Encryption Code

B2798

Communication Malfunction No. 2

- Key

- Transponder key coil

- Transponder key ECU assembly

2016 - 2020 MY Sienna [12/2015 -        ]; THEFT DETERRENT / KEYLESS ENTRY: ENGINE IMMOBILISER SYSTEM(w/o Smart Key System): B2794,B2797,B2798; Unmatched Encryption Code

2. ECM DIAGNOSTIC TROUBLE CODE CHART

HINT:

The DTCs for the engine immobiliser system are specified below. If other codes are output, check the DTC chart for the SFI system.

ECM

DTC Code

Detection Item

Trouble Area

See page

B2799

Engine Immobiliser System Malfunction

- Wire harness connector

- ECM

- Transponder key ECU assembly

2016 MY Sienna [12/2015 - 08/2016]; THEFT DETERRENT / KEYLESS ENTRY: ENGINE IMMOBILISER SYSTEM(w/o Smart Key System): B2799; Engine Immobiliser System Malfunction

B279A

Theft Deterrent System Communication Line High Fixation

- Wire harness connector

- Transponder key ECU assembly

- ECM

2016 MY Sienna [12/2015 - 08/2016]; THEFT DETERRENT / KEYLESS ENTRY: ENGINE IMMOBILISER SYSTEM(w/o Smart Key System): B279A; Theft Deterrent System Communication Line High Fixation

B279C

Theft Deterrent System Presence Detection

ECM

2016 MY Sienna [12/2015 - 08/2016]; THEFT DETERRENT / KEYLESS ENTRY: ENGINE IMMOBILISER SYSTEM(w/o Smart Key System): B279C; Theft Deterrent System Presence Detection