DTC B1318 [Auto Light/Wiper Control Module]: Notes
DTC B1318 (AUTO LIGHT/WIPER CONTROL MODULE) DETECTION CONDITION AND POSSIBLE CAUSES
| DTC B1318 |
Battery voltage low |
| DETECTION CONDITION |
Input voltage from the battery is excessively low |
| POSSIBLE CAUSE |
- PCM DTC is stored.
- Battery malfunction
- Generator malfunction
- Auto light/wiper control module connector or terminal malfunction
- Short to ground or open circuit in auto light/wiper control module power supply circuit
- Auto light/wiper control module malfunction
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 Courtesy of MAZDA MOTORS CORP.
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