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does the 2004 4 toyota 4 runner a voltage gauge?
Does the 2004 4 toyota 4 runner a voltage gauge? Yes , you also can replace a beautiful voltage gauge by yourself. The wiring law of the automobile electronic control system circuit can be summarized as follows: the computer control circuit must be controlled by the ignition switch, and there must be various sensors to input the working condition signal at any time.
For example, magnetic pulse type or hall type sensors can generate pulse voltage signals. Some sensors are made of thermistors. When the resistance value changes, the output voltage also changes. They are analog voltage signals, such as water temperature and intake air temperature sensors. The actuator of the electric control system is controlled by a computer and has self diagnosis function.
The closed-loop control computer detects the oxygen sensor signal, so that the computer-controlled fuel injection pulse width can obtain the ideal air-fuel ratio, achieve the best fuel economy and low emissions. In the closed-loop working condition, there are wiring precautions such as idle working condition and cruise working condition: prepare the circuit schematic diagram of the vehicle type to be connected. If there is no circuit diagram of the 2004 4 toyota 4 , it is better to draw the wiring sketch by yourself against the actual object, which will bring great convenience to the wiring maintenance work. Temporary external wiring required for maintenance must be insulated to prevent short circuit. Do not conduct live wiring. When the conductor is damaged, replace it with the original regular model. The connection shall be reliable and the contact resistance at the connection shall be reduced as much as possible. After wiring, it shall be bound according to the original wiring requirements.
For the installation of the 2004 4 toyota 4 voltage gauge , confirm the installation position. It shall be beautiful in principle, with minimal damage to vehicle lines and 12V power supply. Thinking of the position of the reading lamp on the roof, it is convenient to disassemble and assemble, and there is power supply after pulling out the key (the reading lamp and the anti-theft line are uninterruptible power supply). According to the size of the digital display voltage meter, it is decided to install it on the sunroof button, and you can see it when you look up. Before commencement, measure and compare with a 4-digit multimeter. The difference between the reading lamp voltage and the measured voltage of the battery is about 0.5V (due to the resistance of the wires on the vehicle), which is basically accurate.
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