Toyota Corolla Cross: Transponder Chip Malfunction (B2793,B2797)
Toyota Corolla Cross (2022-2025) Service Manual / Vehicle Interior / Theft Deterrent / Keyless Entry / Immobiliser System (w/o Smart Key System) / Transponder Chip Malfunction (B2793,B2797)
DESCRIPTION
- DTC B2793 is stored when a malfunction is found in the door control transmitter assembly during key ID code registration or a key ID code is not registered normally. Replace the door control transmitter assembly if key ID code registration cannot be performed normally and this DTC is output.
- DTC B2797 is stored when a door control transmitter assembly with a BCC malfunction is inserted into the ignition key cylinder.
|
DTC No. | Detection Item |
DTC Detection Condition | Trouble Area |
Note |
|---|---|---|---|---|
| B2793 |
Transponder Chip Malfunction |
A transponder chip malfunction (1 trip detection logic*). |
Door control transmitter assembly | DTC Output Confirmation Operation:
|
| B2797 |
Communication Malfunction No. 1 |
A door control transmitter assembly with a BCC malfunction is inserted into the ignition key cylinder (1 trip detection logic*). |
Door control transmitter assembly | DTC Output Confirmation Operation:
|
- *: Only output while a malfunction is present.
|
Vehicle Condition when Malfunction Detected |
Fail-safe Operation when Malfunction Detected |
|---|---|
|
Engine cannot be started |
- |
|
DTC No. | Data List and Active Test |
|---|---|
|
B2793 | - |
|
B2797 | - |
CAUTION / NOTICE / HINT
NOTICE:
- If the door control transmitter assembly is replaced, refer to Registration.
Click here
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- After repair, confirm that no DTCs are output by performing "DTC Output Confirmation Operation".
PROCEDURE
|
1. | REPLACE DOOR CONTROL TRANSMITTER ASSEMBLY |
(a) Replace the door control transmitter assembly.
| NEXT | .gif) | END (DOOR CONTROL TRANSMITTER ASSEMBLY WAS DEFECTIVE) |
READ NEXT:
Unmatched Encryption Code (B2794)
DESCRIPTION This DTC is stored when a door control transmitter assembly with an incomplete key ID code is inserted into the ignition key cylinder.
DTC No. Detection Item
DTC Detection Con
Unmatched Key Code (B2795)
DESCRIPTION This DTC is stored when a door control transmitter assembly with a different vehicle serial number is inserted into the ignition key cylinder.
DTC No. Detection Item
DTC Detec
No Communication in Immobiliser System (B2796,B2798)
DESCRIPTION This DTC is stored when a door control transmitter assembly is inserted into the ignition key cylinder but no communication occurs between the door control transmitter assembly and transpo
SEE MORE:
RCTA function
■ Operation of the RCTA function
The RCTA function uses rear side radar sensors to detect vehicles approaching
from the right or left at the rear of the vehicle and alerts
the driver of the presence of such vehicles by flashing the outside
rear view mirror indicators and sounding a buzzer.
App
Lubrication System
On-vehicle InspectionON-VEHICLE INSPECTION PROCEDURE
1. CHECK ENGINE OIL LEVEL (a) Warm up and stop the engine, then wait for 5 minutes.
(b) Check that the engine oil level is between the low level and full level marks on the engine oil level dipstick.
If the level is low, check for engine oil
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