DTC U2030 [Auto Light/Wiper Control Module]: Notes
DTC U2030 (AUTO LIGHT/WIPER CONTROL MODULE) DETECTION CONDITION AND POSSIBLE CAUSE
| DESCRIPTION |
Rain sensor/auto light sensor communication fault |
| DETECTION CONDITION |
- Communication error between rain sensor/auto light sensor and auto light/wiper control module.
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| POSSIBLE CAUSE |
- Rain sensor/auto light sensor connector or terminals malfunction
- Auto light/wiper control module connector or terminals malfunction
- Short to ground in wiring harness between the following terminals:
- Rain sensor/auto light sensor terminal C-Auto light/wiper control module terminal U
- Short to power supply in wiring harness between the following terminals:
- Rain sensor/auto light sensor terminal C-Auto light/wiper control module terminal U
- Open circuit in wiring harness between the following terminals:
- Rain sensor/auto light sensor terminal C-Auto light/wiper control module terminal U
- Rain sensor/auto light sensor malfunction
- Auto light/wiper control module malfunction
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 Courtesy of MAZDA MOTORS CORP.
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