A common fault on '99… I’d bet it’s in the mechanism for resetting it—that is, pushing the button IN to reset the TRIP odometer to 00000….. now jammed at 190.1 or so …. .This ensures that the movement of black ring only by one point. Odometers accurately count miles through a system of gears. An odometer is designed in two types, mechanical and electronic. Now we have seen earlier how the black ring and the white gear inside it are connected. 2) Every time it makes one complete revolution, it passes a Hall-effect (or other magnetic) sensor and the field from the magnet triggers the sensor. Odometer consists of a gear assembly and bunch of rings. Copyright © 2021 WTWH Media LLC. When the wheel rotates the driver cable also rotates with the wheels that transfer the motion of wheel to the gear assembly which sets the gears in connected motion. If we look carefully a white structure is visible. The next image shows the entire arrangement of rings clearly. 8: Picture Showing Complete Arrangement of RIngs in Odometer. Since the white gear and the black ring are connected with each other, the push on the gear sets the black ring in motion. An odometer tells you how many miles/kilometers you have traveled The old/mechanical type of odometers work by a cable that turns a bunch of gears that … Repair the Odometer/PRND321 LCD Display on a '99-'06 GM/Chevy Truck: In this Instructable, I will show you how to repair odometer/gear select (PRND321) LCD on your GM truck. It can be mechanical, electrical, or a combination of the two. It can clearly be seen from the image that the  black  colored tooth is  slightly more deeper  than the alternate red  one. Odometer consists of a gear assembly and bunch of rings. On removing the white ring we can see a clear picture of it from both sides. If your odometer has stopped working, yet your speedometer still works, the cause is probably one of the two faults described above. These are front and the back view of the ring. With every 10 turns, the mechanical links rotate the adjacent tumbler by one digit, and so on. Every ring has a similar structure. The four gears in the speedometer assembly starts the connected motion. Device odometer and server/virtual odometer. An odometer measures and displays the distance travelled by a vehicle by sensing the rotations of a wheel. Both authors list the distances of routes traveled by Alexander the Great (r. 336-323 BC) as by his bematistsDiognetus and Baeton. I get a problem ,my university professor for physics 1 ask me to search about work of odometer in physical view ,I mean he doesn't want to describe the mechanical or electronic odometers ! We also share information about your use of our site with our social media, advertising and analytics partners who may combine it with other information that you’ve provided to them or that they’ve collected from your use of their services. Let’s separate these rings and see how each ring is connected to other. …it’s only my TRIP odometer that stopped working…. How can the speedometer work and the Odometer not work? However, the high accuracy of the bematists's measurements rather indicates the use of a mechanical device. There are two types of odometers in GpsGate. 5: Inner View of Second RIng in Odometer, Fig. The shaft on the plate passes though the gear which allows the smooth movement of gear inside the ring. Fig. One side has teeth running along the entire circumference while other side has only two teeth. See, Body control module (operates the interior, Automotive 101: The Electrical System (An Overview), 10 Rules to Help Keep Your Teen Driver Safe, You'll Get in Serious Trouble for Speeding in These Five States. The blue gear of the assembly is connected to the white ring as shown in the first image. An odometer measures the distance a vehicle travels by sensing the rotations of a wheel of a given circumference. How to concatenate 8Bit binary EEPROM files to get a 32Bit binary file. The milometer is worked by a small gear linked to the inner cable where it emerges into the speedometer. Part of the odometer includes a trip meter. A cable called the driver cable is connected from the wheel to the gear assembly. The plastic plate has a small cut through which we can see some of the teeth’s of the white gear coming out. Let’s understand why? When your odometer ceases to work, most people assume they must replace the unit, which can get quite expensive. Odometer assembly works even when one tooth is damaged because the height of the teeth on small white gear is varied such that the second tooth of the ring passes without coming in contact. Fig. The job of the speedometer is to indicate the speed of your car in miles per hour, kilometers per hour or both. A small semicircular cut is made on the plate which allows the white gear in the ring to make conact with the white ring. This gear drives a series of gears which rotate separate barrels carrying numbers 0 to 9. Working of odometer depends on the spiral groove and gears. Follow the procedure described in Project 88 (Replacing the Speedometer) for instructions on removing it from your dash. Every ring has a similar structure. The odometer on a car tells how far the vehicle has traveled. This concept will be clear with the explanation of next part.After completing one round the teeth on the white ring will come in contact with the white gear placed inside the black ring and in turn applies a force on it. Now, let’s understand how the two rings rotates in odometer assembly.The driver cable sets the gear assembly into motion. How odometer works ?? Odometer Tampering One side has teeth running along the entire circumference while other side has only two teeth. We have colored the teeth of the small white gear as black and red. Fig. The second tooth of the ring is used as a precautionary measure in case the first one is damaged due to wear and tear. The chip can be read and written to using a serial programmer. Every ring is connected with the adjacent ring using the same arrangements. An interesting question that comes to the mind is how come the black ring moves only by one point. The process goes on till ring 6. Now, let’s understand how the two rings rotates in odometer assembly. Sometimes banging the dashboard on the top while traveling above … But the plastic gears that turn an analog odometer have a … This means that when the white gear will rotate, it will in turn rotate the black ring by one point. On a bicycle, a little wheel rolling against the bike wheel turns the cable, and the gear ratio on the odometer has to be calibrated to the size of this small wheel. On removing the white ring we can see a clear picture of it from both sides. Step 1 – A car’s odometer is a measuring device used to inform the driver on the number of miles a particular vehicle has been driving, this meter is directly related to the speedometer. How can this be? Odometer assembly works even when one tooth is damaged because the height of the teeth on small white gear is varied such that the second tooth of the ring passes without coming in contact. How an Odometer Works The odometer is a device that informs the user on the miles traveled by a particular vehicle. For modern vehicles, these are mostly electronic. Artwork: How an electronic speedometer works: 1) A magnet connected to one of the wheels (or more likely to a driveshaft attached to one of the wheels) rotates at high speed. Weird & Wacky, Copyright © 2021 HowStuffWorks, a division of InfoSpace Holdings, LLC, a System1 Company. The image above shows the position and placement of the white gear and the plastic plate. In this case, mine is a '02 Chevrolet Avalanche but this should apply to all GMT 800 series trucks within this age range. Odometer consists of a gear assembly and bunch of rings. We use cookies to personalise content and ads, to provide social media features and to analyse our traffic. The information is coded in HEX characters. The odometer assembly is made up of six rings. Odometer information is stored on a small EEPROM chip on the circuit board. Insight – How Does an Odometer Work. !he wants me to write physical formulas … Fig. and pushing doesn’t do anything. Step 1 - A vehicle's odometer is a measuring device used to inform the driver on the number of miles a particular vehicle has been driving, this meter is directly related to the speedometer. I remember one time helping a friend push a car backwards past the 0 mark so it would display 99,999 again just for fun. Possibly the first evidence for the use of an odometer can be found in the works of the ancient Roman Pliny (NH 6. by one point. 4: Placement and Positioning of White Ring in An Odometer. Understanding how an odometer works will help explain why their readings can get messed up when tires of different sizes are used. Have tried internet searches over the years to no avail. An odometer is a tool of measurement used to determine how far a vehicle has traveled. Electronic odometers give you a digital readout of the mileage. An odometer is designed in two types, mechanical and electronic. When the second worm wears out as shown in the right hand side of the picture, the speedometer keeps working but the odometer will stop turning. Moreover, this parameter does not change. These are front and the back view of the ring. The only exception is when a motorist installs non-standard wheels on his car. How Odometers Work. On removing the gears we can clearly see the odometer as shown below. … MAIN odometer & speedometer DOEs work as usual. The first ring of odometer is in contact with gear 4 which sets it in motion. I have traced the wire to the side of transmission and it seems to be ok. Like I said, speedometer works but odometer stopped years ago. Flickering mute illumination LED on 4 yr old McIntosh Preamp. The driver cable sets the gear assembly into motion. You consent to our cookies if you continue to use our website. To avoid any confusion let us understand the mechanism between the first two rings. The material on this site may not be reproduced, distributed, transmitted, cached or otherwise used, except with the prior written permission of WTWH Media Privacy Policy | Advertising | About Us. It is displayed on the instrument panel by pressing the Sel/Reset button until the information display switches to the odometer. The gear assembly is made up of four gears in contact with each other. Step 2 – Collectively the speedometer and odometer gather data from the vehicle BCM which produces a signal that is then recorded by the odometer. The readout of the mechanical odometer uses 6 rolling disks with numbers 1 through 9. A small white gear is present inside the second ring and covered with a plastic plate. 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