DTC B27A7: Open in Inside Luggage Compartment Electrical Key Oscillator Circuit: Description
The certification ECU (smart key ECU assembly) generates a request signal and transmits the signal to the indoor No. 3 electrical key antenna assembly (inside luggage). For the indoor No. 3 electrical key antenna assembly (inside luggage) to detect when the electrical key transmitter is inside the luggage compartment, the signal from the certification ECU (smart key ECU assembly) requesting a response from the electrical key transmitter is transmitted inside the luggage compartment. DTC B27A7 is stored by the certification ECU (smart key ECU assembly) when an open circuit is detected between the certification ECU (smart key ECU assembly) and indoor No. 3 electrical key antenna assembly (inside luggage) (between terminals CLG7 and CLG6, or terminals CG7B and CLGB).
| DTC Code |
DTC Detection Condition |
Trouble Area |
DTC Output Confirmation Operation |
| B27A7 |
An open circuit is detected in the circuit between the certification ECU (smart key ECU assembly) and indoor No. 3 electrical key antenna assembly (inside luggage) (CLG7 - CLG6, CG7B - CLGB) (1 trip detection logic*). |
- Harness or connector
- Indoor No. 3 electrical key antenna assembly (inside luggage)
- Certification ECU (smart key ECU assembly)
|
No confirmation operation is necessary (monitoring is continuous). |
- *: 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 |
When electrical key transmitter is in luggage compartment:
- Power source mode does not change when engine switch is pressed
- Electrical key transmitter becomes locked inside vehicle
|
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RELATED DATA LIST AND ACTIVE TEST
| DTC Code |
Data List and Active Test |
| B27A7 |
Key diagnostic mode can be used to perform troubleshooting |