Toyota Corolla Cross: Wireless Starter Component Internal Failure (B277A96)
DESCRIPTION
If the remote engine start ECU does not respond to the certification ECU (smart key ECU assembly) or the remote engine start ID is not registered, this DTC is stored.
HINT:
Registration status of the remote engine start ECU ID can be checked using the "Wireless C Code" item in the Data List.
DTC No. | Detection Item |
DTC Detection Condition | Trouble Area |
Note |
B277A96 |
Wireless Starter Component Internal Failure |
One of the following conditions is met (1 trip detection logic*):
- A remote start communication error occurs.
- Response is not possible.
- Registration has not been performed.
|
- CAN communication system
- Remote engine start ECU
- Certification ECU (smart key ECU assembly)
| DTC output confirmation operation:
- A remote start operation is performed.
|
- *: Only output while a malfunction is present.
Vehicle Condition and Fail-safe Operation when Malfunction Detected
Vehicle Condition when Malfunction Detected |
Fail-safe Operation when Malfunction Detected |
Engine does not start with remote start operation |
Engine cannot be started by remote start operation only |
Related Data List and Active Test
DTC No. | Data List and Active Test |
B277A96 | - |
CAUTION / NOTICE / HINT
NOTICE:
- When using the GTS with the ignition switch off, connect the GTS to the DLC3 and turn a courtesy light switch on and off at intervals of 1.5 seconds or less until communication between the GTS and the vehicle begins. Then select the vehicle type under manual mode and enter the following menus: Body Electrical / Smart Key. While using the GTS, periodically turn a courtesy light switch on and off at intervals of 1.5 seconds or less to maintain communication between the GTS and the vehicle.
- The smart key system (for Start Function) uses the LIN communication system and CAN communication system. Inspect the communication function by following How to Proceed with Troubleshooting. Troubleshoot the smart key system (for Start Function) after confirming that the communication systems are functioning properly.
Click here
- Before replacing the certification ECU (smart key ECU assembly), refer to Registration.
Click here
- After performing repairs, confirm that no DTCs are output by performing "DTC Output Confirmation Operation".
PROCEDURE
1. | CHECK CAN COMMUNICATION SYSTEM |
(a) Check for CAN communication system DTCs.
Click here
OK:
CAN communication DTCs are not output.
NG |
| GO TO CAN COMMUNICATION SYSTEM (DIAGNOSTIC TROUBLE CODE CHART) |
OK |
| |
2. |
REGISTER REMOTE ENGINE STARTER ID |
(a) Register the remote engine starter ID.
OK:
Registration can be completed.
NG |
| REPLACE SMART KEY ECU ASSEMBLY (SMART KEY ECU ASSEMBLY) |
OK |
| |
3. |
CHECK REMOTE ENGINE STARTER FUNCTION |
(a) Check the remote engine starter function.
OK:
Remote engine starter functions operate normally.
OK |
| END (REMOTE ENGINE STARTER ID WAS NOT REGISTERED) |
NG |
| REPLACE REMOTE ENGINE START ECU |
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DTC No. Detection Item
DTC Detection Condition Trouble Area
Note B2
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SEE MORE:
CALIBRATION
NOTICE:
When any of the following parts have been replaced, perform adjustment
shown in the following table. If not, the parking support brake system may not operate
correctly.
PRECAUTION (PROCEDURE 1)
(a) The necessary procedures (adjustment, calibration, initialization
or reg
■ Anchor brackets (for top
tether strap)
Anchor brackets are provided
for each rear seat.
Use anchor brackets when fixing
the top tether strap.
Anchor brackets
Top tether strap
■ Fixing the top tether strap
to the anchor bracket
Install the child restraint system
in accordance to the opera