DTC B109E-29: Communication Error Between Body Control Module (BCM) And LF Control Unit
B109E-29: (BCM) DETECTION CONDITION AND POSSIBLE CAUSE
| System malfunction location |
Communication error between body control module (BCM) and LF control unit |
| Detection condition |
- The body control module (BCM) detects the communication error with the LF control unit.
|
| Fail-safe |
- Cancels the i-stop control.
- Requests engine restart control by i-stop.
|
| Possible cause |
- Malfunction in wiring harness (including connector/terminal) between LF control unit and body control module (BCM) (See
CIRCUIT INSPECTION
.) (See
CONNECTOR INSPECTION
.)
- LF control unit malfunction (Refer to LF CONTROL UNIT INSPECTION
in service information.)
- Body control module (BCM) malfunction (Refer to BODY CONTROL MODULE (BCM) REMOVAL/INSTALLATION
in service information.)
|
| Repeatability verification procedure |
- Clear the DTC recorded in the memory. (See
CLEARING DTC
.)
|
 Courtesy of MAZDA MOTORS CORP.
|
| 1 |
Body control module (BCM) |
| 2 |
LF control unit |