DTC B13D3-94: Communication Error With Remote Transmitter (BCM): Outline
WARNING: This page is about a different car, the 2020 Mazda CX-30. However, it is still accessible from the selected car via links, so may be relevant.
DTC B13D3:94 (BCM) DETECTION CONDITION AND POSSIBLE CAUSE
| System malfunction location |
Communication error with remote transmitter |
| Detection condition |
- The LF control unit could not detect the remote transmitter communication or communication error was detected.
|
| Fail-safe |
Not applicable |
| Possible cause |
- When the ignition is switched ON (engine off or on), it is detected that the remote transmitter is outside of the vehicle.
- Keyless receiver malfunction
- Keyless antenna malfunction
- Push button start connector or terminal malfunction
- LF control unit connector or terminal malfunction
- Remote transmitter malfunction
- LF control unit malfunction
- Body control module (BCM) malfunction
NOTE:
- If any of the following items are touching or near the remote transmitter, signal communication between the remote transmitter and the vehicle is negatively affected, resulting in the engine not starting.
- Spare keys
- Keys for other vehicles equipped with an immobilizer system
- Any metallic object
- Any electronic device, or any credit or other card with magnetic strips
- Radio wave outputting device nearby
|
| System wiring diagram |
Not applicable |
| Connector diagram |
Not applicable |