DTC B27A5: Open in Front Floor 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 (front floor). For the indoor electrical key oscillator (front floor) to detect when the electrical key transmitter sub-assembly is inside the vehicle, the signal from the certification ECU (smart key ECU assembly) requesting a response from the electrical key transmitter sub-assembly is transmitted inside the vehicle. DTC B27A5 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 (front floor) (between terminals CLG5 and ANTE5, or terminals CG5B and CLGB).
| DTC Code | DTC Detection Condition | Trouble Area | DTC Output Confirmation Operation |
|---|---|---|---|
| B27A5 | An open circuit is detected in the circuit between the certification ECU (smart key ECU assembly) and indoor electrical key oscillator (front floor) (CLG5 - ANTE5, CG5B - CLGB) (1 trip detection logic*). |
|
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 electrical key transmitter sub-assembly is in front seat area:
|
- |
RELATED DATA LIST AND ACTIVE TEST
| DTC Code | Data List and Active Test |
|---|---|
| B27A5 | Key diagnostic mode can be used to perform troubleshooting |