What does GCU-R fault mean?

1 Answers
MacRose
07/30/25 8:14am
GCU-R fault means relay sticking/short circuit or overload, just replace it with a new one. The following is a detailed introduction to automotive relays: 1. Function: The basic function of an automotive relay is to use small current to control large current operation as an "automatic switch". It plays roles in automatic regulation, safety protection, circuit conversion, switching, etc. in circuits. 2. Selection by usage environment: The usage environment conditions mainly refer to temperature (maximum and minimum), humidity (generally refers to the maximum relative humidity at 40 degrees Celsius), low air pressure (can be ignored below 1000 meters altitude), vibration and impact. In addition, there are requirements for packaging methods, installation methods, dimensions and insulation. Due to different materials and structures, relays can withstand different environmental mechanical conditions. Using beyond the product standard's specified environmental mechanical conditions may damage the relay. Select according to the equipment's environmental mechanical conditions or higher conditions.
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