Last Modified: 04-05-2023 |
6.11:8.1.0 |
Doc ID: RM100000000VJL1 |
Model Year Start: 2016 |
Model: Sienna |
Prod Date Range: [12/2015 -
] |
Title: THEFT DETERRENT / KEYLESS ENTRY: ENGINE IMMOBILISER SYSTEM(w/o Smart Key System): B2794,B2797,B2798; Unmatched Encryption Code; 2016 - 2020 MY Sienna [12/2015 - ] |
DTC
|
B2794
|
Unmatched Encryption Code
|
DTC
|
B2797
|
Communication Malfunction No. 1
|
DTC
|
B2798
|
Communication Malfunction No. 2
|
DESCRIPTION
-
DTC B2794 is stored when a key with an incomplete key code is inserted into the ignition key cylinder.
-
DTC B2797 is stored when a key with a Bcc malfunction is inserted into the ignition key cylinder.
-
DTC B2798 is stored when a key is inserted into the ignition key cylinder but a communication error occurs between the key and transponder key ECU assembly.
DTC Code
|
DTC Detection Condition
|
Trouble Area
|
B2794
|
A key with an incomplete key code is inserted into the ignition key cylinder.
|
-
Key
-
Wire harness or connector
-
Transponder key coil
-
Transponder key ECU assembly
|
B2797
|
A key with a Bcc malfunction is inserted into the ignition key cylinder.
|
B2798
|
Key code identification cannot be completed within the specified time.
|
CAUTION / NOTICE / HINT
NOTICE:
-
When replacing the key and transponder key ECU assembly, refer to the Registration (See page
).
-
After performing repairs, perform the operation that fulfills the DTC output confirmation operation, and then confirm that no DTCs are output again.
PROCEDURE
(a) Clear the DTCs (See page
).
NEXT
|
|
|
(a) Insert and remove each registered key one at a time, and check for DTCs each time (See page
).
HINT:
-
Before checking for DTCs, perform the "DTC Output Confirmation Operation" procedure.
-
If DTC is stored, clear the DTCs before checking the next key.
OK:
DTC B2794, B2797 and B2798 is not output.
Result
Result
|
Proceed to
|
OK
|
A
|
NG (all keys)
|
B
|
NG (any key)
|
C
|
C |
|
REPLACE KEY THAT CANNOT START ENGINE
|
B
|
|
|
3.
|
CHECK CONNECTION OF CONNECTOR
|
(a) Check that the connectors are properly connected to the transponder key coil.
(b) Check that the engine starts with the key.
OK:
Engine starts.
OK |
|
END (CONNECTOR WAS NOT CONNECTED PROPERLY)
|
NG
|
|
|
4.
|
REPLACE TRANSPONDER KEY COIL
|
(a) Clear the DTC (See page
).
(b) Replace the transponder key coil (See page
).
(c) Check that the engine starts with the key.
OK:
Engine starts.
OK |
|
END (TRANSPONDER KEY COIL WAS DEFECTIVE)
|
|