30/04/2026
【2016 Ford Focus 右尾門疑難雜症】
車主話:尾門玻璃唔郁、門鎖又冇反應 😶
我心諗:呢啲case…點會咁簡單😏🔧
一開工就知唔對路 ⚠️
最後要將4 隻門拆散晒 🔩🪛
再出埋示波器逐條線追signal 📡📊
先終於捉到問題所在 🕵️♂️
結果出嚟:
壞係右尾門冇錯,但真正問題唔喺尾門 ❌🚪
原來係左頭門A柱入水 💧
搞到線插氧化,仲斷埋線腳 ⚡🧨
電路問題最麻煩就係咁——
表面一個位壞 👀
實際另一個位出事 🤯
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2016 Ford Focus – Tailgate issue
Customer came in with rear window not working and tailgate lock inoperative 😶
As expected… not a simple fix 😏
Ended up stripping down the entire tailgate 🔩🪛
Using an oscilloscope to trace signals 📡📊
And finally pinpointed the fault 🕵️♂️
Final diagnosis:
The tailgate wasn’t the root cause ❌
Water ingress at the left front A-pillar 💧
caused corrosion in the connector and broken pins ⚡🧨
That’s the tricky part with electrical faults —
the symptom and the root cause are often in different places 🤯
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