Once unplugged, inspect the pins to see if there is any damage to them. First, unplug the harness from the control module. Once you’ve established that the wiring harness looks fine, the next place to look is where the wiring harness plugs into the TCM and CAN bus.
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Here’s how to go about tracking down an issue with the wiring to/from your TCM. Check for Wiring Problems.Īs stated above, the most common cause of U0101 is a wiring issue. If the problem is intermittent, check the ground to the TCM first. However, if it can not talk with the TCM, there is a communications issue, and it can be addressed now. If the scanner can talk with the module, the problem is intermittent. If there are any other codes related to the battery, PCM, or TCM, tackle them first, particularly if you can get the scanner to talk with your Aura’s TCM. Codes P0700 and U0100 are likely to appear with U0101.Limp mode (the vehicle will stay in one gear).U0101 will have noticeable symptoms unless the failure in communications between modules is very intermittent.
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With code U0101, the most likely cause of the lack of communication is a short or open circuit going to or from the CAN bus. The CAN buses let the different modules exchange data. The TCM communicates with the PCM (and any other module) through the Controller Area Network bus system (CAN bus). When U0101 is present, the transmission will probably go into “limp mode,” which usually limits the vehicle to one or two gears. It uses throttle position data and engine speed to shift the vehicle at the right time. The TCM needs to communicate with the PCM (Powertrain Control Module) in order to know when to shift the transmission. The Transmission Control Module, or TCM, controls when and how hard the Saturn Aura’s transmission shifts. U0101 Definition: Lost Communication with TCM U0101 is often misdiagnosed as a bad TCM before the wiring harness has been inspected. It means that your Aura’s TCM (Transmission Control Module) can’t communicate with the rest of the vehicle, usually due to a bad wiring harness or an issue with the TCM itself. Nice salesmen though.U0101 is a generic powertrain code, which means it has the same definition for the Saturn Aura as it would any other vehicle. The photos were deceiving compared to seeing the car in person. When the sales person came out with the keys, he had a battery charger with him just to start the car.ĭealership failed to note the obvious damage of the vehicle in the ad, looks like the vehicle was in some accident and then the rear and front bumpers were painted. The car is sold "as is" but the was so much interior damage that was never shown in the pics or described in the listing.
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This was THE worst car buying experience ever!!! The person that came to "help" us was not professional at all. Unfortunately it was above my budget after fees and taxes. Mason was a great guy very pleasant and willing to work with me I really wish I could have been able to afford the vehicle.
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Request Info Year: 2009 Make: Saturn Model: Aura Body type: Sedan Doors: 4 doors Drivetrain: Front-Wheel Drive Engine: 169 hp 2.4L I4 Exterior color: Gray Combined gas mileage: 27 MPG Fuel type: Gasoline Interior color: Gray Transmission: 6-Speed Automatic Mileage: 147,089 NHTSA overall safety rating: Not Rated Major Options: Leather Seats, Navigation System, Bluetooth VIN: 1G8ZV57B29F194774 Vehicle listing was accurate and vehicle was nice.
Responded quickly and answered questions. Unfortunately we couldn't get over the last step to make a deal. I was very impressed with theĬustomer service and friendliness of all the staff I came in contact with. made a good offer on my trade, negotiated a good price on their vehicleĪnd was able to get me a better interest rate than I went in with. The dealership was very helpful, I was in the market to buy, had my own preapproval financing Request Info Year: 2008 Make: Saturn Model: Aura Body type: Sedan Doors: 4 doors Drivetrain: Front-Wheel Drive Engine: 219 hp 3.5L V6 Exterior color: Silver Combined gas mileage: 23 MPG Fuel type: Gasoline Interior color: Gray Transmission: 4-Speed Automatic Mileage: 84,088 NHTSA overall safety rating: Not Rated Major Options: Steel Wheels Stock number: 10391A VIN: 1G8ZS57N68F141089
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