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What's the matter with the Honda meter unit failure?

1 Answers

SanJake

07/29/25 10:39pm

Usually, it is due to poor contact of the meter unit connector or aging wiring, which may be bitten off by rats, resulting in an open circuit between the high and low ends of the meter unit. Meter unit short circuit fault: If there is a short circuit between the high and low ends of the meter unit, it may be caused by rainwater entering and causing a short circuit. It is recommended to unplug the connector and let it air dry. After a short circuit, the meter unit itself will lose current and will not perform work again, remaining in its original normally open or normally closed state. Meter unit ground short circuit fault: This situation occurs when the low end of the meter unit is grounded, meaning the 3.5V control line is shorted to ground. The current of the meter unit reaches its maximum, and the ECU will no longer be able to control the meter unit. If it is a normally closed meter unit, it will open all oil passages, leading to high-pressure fuel rail pressure limitation or engine shutdown.

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