Method for configuring speed ratio of automobile combination instrument
A combination instrument and configuration method technology, which is applied to vehicle components, circuits or fluid pipelines, transportation and packaging, etc., can solve the problem that the instrument cannot be adapted to different vehicle models, and achieve the goal of increasing speed, reducing operating procedures, and reducing workload Effect
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[0033] DETAILED DESCRIPTION figure 1 Specifically, the present embodiment, the configuration method of the car combination instrument vehicle speed speed ratio according to the present embodiment, includes the following steps:
[0034] Step 1: Store a fixed speed ratio information in the EEPROM of the meter, and set the flag bits FLAG = 0;
[0035] Step 2: When the ignition switch is in the ON file, the instrument communicates with BCM. If the communication is successful, step three;
[0036] If the communication fails, the instrument LCD screen prompts the speed communication failure and performs step four;
[0037] Step 3: The instrument is verified with BCM. If the inspection is successful, the meter receives the speed ratio information sent by the BCM, and uses the speed ratio information in the EEPROM using the speed ratio information sent by the BCM, which is completed.
[0038] The specific steps of speed ratio information in the EEPROM are updated using BCM.
[0039] If th...
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