Toyota Corolla Cross: Front Passenger Side Electrical Antenna Circuit Open (B27A213)
DESCRIPTION
The certification ECU (smart key ECU assembly) generates a request signal and transmits the signal to the front door outside handle assembly (for front passenger door) (electrical key antenna) at intervals of 0.25 seconds. For the front door outside handle assembly (for front passenger door) (electrical key antenna) to detect when the electrical key transmitter sub-assembly is brought close to the vehicle, a signal requesting a response from the electrical key transmitter sub-assembly is transmitted within approximately 1 m (3.28 ft.) of the front passenger door at intervals of 0.25 seconds. DTC B27A213 is stored by the certification ECU (smart key ECU assembly) when an open is detected between the certification ECU (smart key ECU assembly) and front door outside handle assembly (for front passenger door) (electrical key antenna) (between terminals CLG2 and ANT1, or terminals CG2B and ANT2).
|
DTC No. | Detection Item |
DTC Detection Condition | Trouble Area |
Note |
|---|---|---|---|---|
| B27A213 |
Front Passenger Side Electrical Antenna Circuit Open |
An open is detected in the circuit between the certification ECU (smart key ECU assembly) and front door outside handle assembly (for front passenger door) (CLG2 - ANT1, CG2B - ANT2) (This is detected by the malfunction detection circuit in the certification ECU (smart key ECU assembly)) (1 trip detection logic*). |
| DTC Output Confirmation Operation:
|
- *: Only output while a malfunction is present.
|
Vehicle Condition when Malfunction Detected |
Fail-safe Operation when Malfunction Detected |
|---|---|
|
Entry lock/unlock operation cannot be performed for front passenger door |
- |
|
DTC No. | Data List and Active Test |
|---|---|
|
B27A213 | Key diagnostic mode can be used to perform troubleshooting |
WIRING DIAGRAM
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 Entry Function) uses the CAN communication system. Inspect the communication function by following How to Proceed with Troubleshooting. Troubleshoot the smart key system (for Entry Function) after confirming that the communication systems are functioning properly.
Click here
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- Before replacing the certification ECU (smart key ECU assembly), refer to Precaution.
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- After repair, confirm that no DTCs are output by performing "DTC Output Confirmation Operation".
PROCEDURE
|
1. | CHECK CONNECTOR CONNECTION |
(a) Check that the connectors are properly connected to the certification ECU (smart key ECU assembly) and front door outside handle assembly (for front passenger door).
OK:
Connectors are properly connected.
| NG | .gif) | CONNECT CONNECTORS PROPERLY |
|
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| 2. |
CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) - FRONT DOOR OUTSIDE HANDLE ASSEMBLY (FOR FRONT PASSENGER DOOR)) |
(a) Disconnect the I222 certification ECU (smart key ECU assembly) connector.
(b) Disconnect the K19 front door outside handle assembly (for front passenger door) connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection | Condition |
Specified Condition |
|---|---|---|
|
I222-10 (CLG2) - K19-4 (ANT1) |
Always | Below 1 Ω |
|
I222-9 (CG2B) - K19-6 (ANT2) |
Always | Below 1 Ω |
(d) Reconnect the I222 certification ECU (smart key ECU assembly) connector.
| NG | | REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
| 3. |
CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) (OUTPUT TO FRONT DOOR OUTSIDE HANDLE ASSEMBLY (FOR FRONT PASSENGER DOOR)) |
|
*a | Component with harness connected (Certification ECU (Smart Key ECU Assembly)) |
*b | Waveform 1 |
|
*c | Waveform 2 |
*d | Waveform 3 |
|
*e | Waveform 4 |
- | - |
(a) Using an oscilloscope, check the waveform.
OK:
|
Tester Connection | Condition |
Tool Setting | Specified Condition |
|---|---|---|---|
|
I222-10 (CLG2) - I222-29 (E) | Procedure:
| 5 V/DIV., 500 ms./DIV. |
Pulse generation (See waveform 1) |
|
Procedure:
| 5 V/DIV., 500 ms./DIV. |
Pulse generation (See waveform 2) | |
|
I222-9 (CG2B) - I222-29 (E) | Procedure:
| 5 V/DIV., 500 ms./DIV. |
Pulse generation (See waveform 3) |
|
Procedure:
| 5 V/DIV., 500 ms./DIV. |
Pulse generation (See waveform 4) |
- *: For details about the entry function detection area, refer to Operation Check.
Click here
| OK | | REPLACE FRONT DOOR OUTSIDE HANDLE ASSEMBLY (FOR FRONT PASSENGER DOOR) |
| NG | | REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) |
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SEE MORE:
Precaution
PRECAUTION
HINT:
The following procedures are used to prevent wrinkles from forming when installing the seat cover. Make sure to follow the procedures correctly.
The shape of the seat shown in the illustration may differ from the actual seat.
SEAT COVER SET (a) Align the center c
Customize Parameters
CUSTOMIZE PARAMETERS CUSTOMIZE WIPER AND WASHER SYSTEM (w/ Rear Wiper System)
NOTICE:
When the customer requests a change in a function, first make sure that the function can be customized.
Be sure to make a note of the current settings before customizing.
When troubleshooting a function, fi
