DTC B13AF 62: Light Switch Lo Signal Mismatch: Notes
WARNING: This page is about a different car, the 2014 Mazda 6. However, it is still accessible from the selected car via links, so may be relevant.
DTC B13AF:62 (FRONT BODY CONTROL MODULE) DETECTION CONDITION AND POSSIBLE CAUSES
| Description |
Light switch LO signal mismatch |
| Detection condition |
- The condition in which the CAN and module signals are compared and no match is detected between the signals for 5 s or more
with the ignition switched ON (engine off or on).
|
| Fail-safe function |
- If DTC B13AF:62 is detected when the ignition is switched ON (engine off or on), the headlight LO and the TNS are illuminated.
- If DTC B13AF:62 is cleared, the headlight LO and the TNS are turned off, and the operation returns to normal.
|
| Possible cause |
- Start stop unit malfunction
- Light switch malfunction
- Short to ground in wiring harness between start stop unit terminal 1X and front body control module (FBCM) terminal 2W
- Short to power supply in wiring harness between start stop unit terminal 1X and front body control module (FBCM) terminal 2W
- Open circuit in wiring harness between start stop unit terminal 1X and front body control module (FBCM) terminal 2W
- Front body control module (FBCM) malfunction
|
 Courtesy of MAZDA MOTORS CORP.
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