DTC B27A7: Open in Inside Luggage Compartment Electrical Key Oscillator Circuit: Description
WARNING: This page is about a different variant/trim than selected.
The certification ECU (smart key ECU assembly) generates a request signal and transmits the signal to the indoor electrical key oscillator (rear floor). For the indoor electrical key oscillator (rear floor) to detect when the electrical key transmitter sub-assembly is inside the luggage compartment, the signal from the certification ECU (smart key ECU assembly) requesting a response from the electrical key transmitter sub-assembly 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 electrical key oscillator (rear floor) (between terminals CLG7 and ANTE7, or terminals CG7B and CLGB).
| DTC No. |
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 electrical key oscillator (rear floor) (CLG7 - ANTE7, CG7B - CLGB) (1 trip detection logic*). |
- Harness or connector
- Indoor electrical key oscillator (rear floor)
- Certification ECU (smart key ECU assembly)
|
Any time |
*: 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 key is in luggage compartment:
- Power source mode does not change when power switch is pressed
- Electrical key transmitter sub-assembly becomes locked inside vehicle
|
- |
RELATED DATA LIST AND ACTIVE TEST
| DTC No. |
Data List and Active Test |
| B27A7 |
Key diagnostic mode can be used to perform troubleshooting |