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subaru speedometer and tachometer not working
Subaru incorrect speedometer display: when the acceleration exceeds 80km / h, the speedometer pointer still stays at 80km / h and will not rise. It can be judged that the output pulse signal of the sensor is inaccurate or the instrument is faulty. It may be that the speedometer of the vehicle's instrument assembly has failed, resulting in the pointer of this meter not rotating.
It may be that the wheel speed sensor of the vehicle has failed, resulting in the meter not rotating. It may be that the mileage sensor of the vehicle has failed, resulting in the meter not rotating. Specific needs to be checked. The speedometer in the instrument is faulty or the instrument plug is falsely connected. The instrument can call the fault code through the fault diagnosis instrument or conduct action test to judge whether it is the cause of the speedometer itself.
The speed of the subaru car is indicated by the pointer on the speedometer, which shows the instantaneous speed rather than the total mileage. The indication of the speedometer depends on the speed sensor, which is usually installed on the gearbox. Other vehicles display the current vehicle speed by collecting the signal of wheel speed sensor. The sensor obtains different pulse signals through different rotational speeds, and then converts them into pointer output, that is, we see the speedometer showing the current vehicle speed on the instrument.
First check whether the flexible shaft is disconnected, and then check subaru whether the mileage increases when starting. If the subaru tachometer doesn't move. There's no need to repair it. Replace it with a new one. As long as the car starts, the gear in the tachometer will rotate. It will wear out after a long time. The gear in the tachometer is plastic and the new one doesn't cost much. The tachometer is generally set in the instrument panel and placed symmetrically with the speedometer.
The tachometer works according to the magnetic principle. It receives the pulse signal generated when the primary current in the ignition coil is interrupted and converts this signal into a displayed speed value. The faster the engine speed, the more pulses generated by the ignition coil, and the greater the speed value displayed on the table. Cars are generally electronic tachometers, including pointer type and liquid crystal digital display type. There is a digital integrated circuit in the meter. It drives the pointer to move or digital display after calculating the voltage pulse transmitted from the ignition coil. In addition, there is another kind of tachometer, which takes out the pulse signal from the generator and sends it to the tachometer circuit to explain the speed value. However, due to the influence of factors such as generator belt slip, the value is not very accurate.
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