| Last Modified: 04-05-2023 | 6.11:8.1.0 | Doc ID: RM100000000ZMV3 |
| Model Year Start: 2017 | Model: Sienna | Prod Date Range: [08/2016 - ] |
| Title: THEFT DETERRENT / KEYLESS ENTRY: ENGINE IMMOBILISER SYSTEM(w/o Smart Key System): DIAGNOSTIC TROUBLE CODE CHART; 2017 - 2020 MY Sienna [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 |
|
|
B2784 |
Antenna Coil Open / Short |
- Wire harness connector - Transponder key coil - Transponder key ECU assembly |
|
|
B2793 |
Transponder Chip Malfunction |
Key |
|
|
B2794 |
Unmatched Encryption Code |
Key |
|
|
B2795 |
Unmatched Key Code |
Key |
|
|
B2796 |
No Communication in Immobiliser System |
- Key - Transponder key coil - Transponder key ECU assembly |
|
|
B2797 |
Communication Malfunction No. 1 |
- Key - Transponder key coil - Transponder key ECU assembly |
|
|
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): B2780; Push Switch / Key Unlock Warning Switch Malfunction](/t3Portal/stylegraphics/info.gif)
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 |
|---|---|---|---|
|
B279986 |
Engine Immobiliser System Signal (Some Circuit Quantity, Reported via Serial Data) Invalid |
- Wire harness connector - ECM - Transponder key ECU assembly |
|
|
B279A12 |
Engine Immobiliser System Circuit Short to Battery |
- Wire harness connector - Transponder key ECU assembly - ECM |
|
|
B279C95 |
Engine Immobiliser System Incorrect Assembly |
ECM |
|
|
|