I need to know the diagnostic procedure for dtc p0717. Want to test wires before taking out transmission

I have a 06 Chevy Colorado w a 4l50e trans with the input speed sensor and its throwing dtc p0717. I would like to know the wiring harness test procedure and sensor replacement procedure also.
My car has an automatic transmission.
Experienced mechanics share their insights in answering this question :
If the sensor only has two wires, it is a reluctant AC sensor. If the sensor has three wires then it is a hall effect DC sensor. A two wire sensor will produce a sine wave signal: ’()(-)()(-)(_)’ or steady voltage when measured across both leads with a DVOM or scope. A three wire sensor will read ground or 0 on one wire, five volts on another lead, and a square wave form on the middle wire.

If you do not have an oscilloscope, the testing process is difficult. The ISS on the 4L60E is not uncommon. Also wiring could be damaged leading to the sensor. Inspect for damage or corrosion. It requires removal of the transmission to replace.

If you’d need some assistance with this, consider YourMechanic, as one of our mobile technicians can diagnose the trouble code further and help you fix your car as necessary.

How to Identify and Fix Common car Problems ?

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P0717 code definition

The PCM (powertrain control module) will set the P0717 code when it detects no signal from the input/turbine speed sensor. This signal may be interrupted briefly, or it may be erratic or otherwise outside of expected manufacturer settings.

Code P0717 is triggered when the transmission`s Input Speed Sensor isn`t providing a signal. This is a critical problem because with out this signal, the Transmission Contorl Module or TCM can`t properly shift the vehicle from gear to gear as the vehicle needs to change speed and rates of acceleration.
P0717-Input/Turbine Speed Sensor `A` Circuit No Signal 1. Repair or replace the control harness between the PCM and the transmission.
The turbine speed sensor is used to measure the speed of crankshaft, camshaft, gear tooth and turbine speed of a jet engine. Other major applications of turbine speed sensors include: Differential gears.
The P0720 is an OBD code related to the workings and overall condition of the output speed sensor circuit. The Powertrain Control Module (PCM) in this particular circuit works by gathering a signal from the output speed sensor to assess and input the right shift strategy to the car`s transmission.
A P0500 code is a diagnostic trouble code (DTC) titled “Vehicle Speed Sensor (VSS) Malfunction.” This code is triggered when the vehicle`s Powertrain Control Module (PCM) or Engine Control Module (ECM) detects inaccurate speed readings or lack of a signal from the Vehicle Speed Sensor (VSS).
If a car turbine sensor fails, it may have a effect on the cars performance. This could include, lower fuel efficiency and mileage plus a less smooth gear change, or the car may go into limp mode, meaning it may stay in say second gear to protect itself.
A P0715 trouble code is related to the communication between a vehicle`s engine and transmission. When the input speed sensor does not receive a signal that is within the manufacturer`s parameters, a P0715 will illuminate as the transmission will not be able to read the engine RPMs to shift properly.
P0716 code definition

The P0716 code indicates that the car`s computer has received an input signal from the engine speed sensor that is incorrect in some way. Without accurate input information, the computer will be unable to create the right shifting strategy for the transmission.

The P0720 code indicates a problem with the output speed sensor, which doesn`t function properly for a few reasons. These reasons may include the sensor itself and things like old transmission fluid, bad electrical wiring, or a PCM malfunction.
The output speed sensor is also known as the vehicle speed sensor in a vehicle. It transmits a signal to the transmission control unit, informing it of the vehicle`s speed. Failure of the speed sensor is a common reason for taking the car to the mechanic.
Transmission Range Sensor (TR)/ Transmission Position Sensor

The PCM uses this information to control which gears of the transmission to enable or disable. When the TR sensor fails it can cause wrong gear starts, no upshifts, or what feels like a falling-out-of-gear condition.

Often (though not always) a faulty transmission will trigger an engine diagnostic code and trip the Check Engine Light to let you know. Same goes if your engine overheats because of a bad transmission. Problems with a solenoid, speed sensor, slippage, and more can cause the Check Engine Light to come on.
Your car`s Check Engine Light can popup due for multiple reasons. However, one of the common reasons could be a faulty speed sensor in a car. If you see the check engine light, ABS warning light or traction control light on your car dashboard, then check the error code.
Turn off your vehicle`s ignition and wait patiently for 5 to 10 seconds. Start the engine and allow it to idle for several seconds. Switch off the ignition and wait patiently for another 30 to 40 seconds. Repeat these steps 2 to 3 times in order to reset your vehicle`s transmission control module.
This includes speed sensors that tell your transmission how and when to change gears. If your speed sensor is sending incorrect data, it can lead to hard shifting and other drivability problems.
The best thing to do to confirm the problem is to test the torque converter. To test the torque converter, you must step on the pedal to the floor and accelerate your engine for up to five seconds. The reading for the revolutions per minute (RPM) will max out at the stall speed.
If the sensor is magnetic, it can go bad from iron sticking to the tip of the sensor, which will cause an inaccurate reading. In this case, the sensor may not have to be replaced as the sensor can be cleaned off.
Note: The transmission speed sensor is located in the rear of a longitudinal mount transmission. For transaxles, the speed sensor is located on the long side of the output shaft. This would be the end of the transaxle that faces the front of the engine.

Relevant Questions and Answers :

the most relevant questions and answers related to your specific issue

I need to know the diagnostic procedure for dtc p0717. Want to test wires before taking out transmission
ANSWER : If the sensor only has two wires, it is a reluctant AC sensor. If the sensor has three wires then it is a hall effect DC sensor. A two wire sensor will produce a sine wave signal: ’()(-)()(-)(_)’ or steady voltage when measured across both leads with a DVOM or scope. A three wire sensor will read ground or 0 on one wire, five volts on another lead, and a square wave form on the middle wire.

If you do not have an oscilloscope, the testing process is difficult. The ISS on the 4L60E is not uncommon. Also wiring could be damaged leading to the sensor. Inspect for damage or corrosion. It requires removal of the transmission to replace.

If you’d need some assistance with this, consider YourMechanic, as one of our mobile technicians can diagnose the trouble code further and help you fix your car as necessary.

Engine swap details needed. I need to know if the swap will fit.
ANSWER : Hi there. When it comes to swapping engines for your vehicle, what you can do is check all of the engine mounts and transmission mounts and make sure that they will work. If the mounts are a little off but there is room, then you may have to retro fit a custom mount. Check the length of the engine and the transmission assembly together. Make sure that the assembly is the same length. It may be okay if it’s a few inches shorter or longer, however, it cannot exceed 3 inches or the assembly will not fit. There has to be room for the engine to move around. Also, keep in mind, the CV shafts may not match up to the transmission and wheel hubs, especially if the transmission is shorter or longer. If you need further assistance with swapping your engine with another engine, then seek out a professional, such as one from Your Mechanic, to help you.

Valve Cover Gaskets/ Transmission line fittings to the radiator, do I need them?
ANSWER : Hello. The only way to really know for sure if you need to have these repairs done would be to get a second opinion. If the valve covers are leaking then they should be repaired to prevent further issues. As for the transmission line fittings, if these are leaking at the transmission then they need to be fixed also. Most of the time that does not need anything more than tightening the hoses at the fitting to stop any leakage. If you would like to get a second opinion on these leaks, consider YourMechanic, as a certified mechanic can come to your home or office to diagnose and repair this.

I need to know how many liters of oil takes the transmission of a scion tc 2015
ANSWER : Hi There,
For a simple drain and refill, your vehicle should take about 3.5 quarts which equates to ~3.31 liters. If you need additional help with this, please reach out to us here at Yourmechanic as we are always here to help.

Does this transmission have a transmission filter that can or needs to be change at certain miles?
ANSWER : Most vehicles have an internal transmission filter that can be changed by removing the transmission pan. Some diesel trucks will have an external filter that can be changed just like an oil filter. The transmission filter is usually recommended to be replaced either when the transmission fluid is replaced or around 100,000 miles depending on the manufacturer’s recommendation.

As for which fluid to use, I would recommend looking in you owners manual. Your owners manual will list all fluid specifications that are required for your vehicle including capacity and type. I would always recommend using what the manufacturer recommends for the vehicle.

If you’d like to have your transmission fluid and filter serviced, consider YourMechanic, as one of our mobile technicians can come to your home or office to do so.

I need to know which body wiring harness goes to my truck- VIN lookup
ANSWER : My best recommendation would be to contact your local dealership. If you give them your year, make, model, vin, and a description of the wiring harness that you need, they should be able to give you some information in regards to the part number. Unfortunately, the dealership is about the only possible chance of tracking down this harness other than getting one from a junk yard.

What can you do to see how healthy a transmission is / how long it’ll last? How much do these tests tell you?
ANSWER : Some of the tests that could be performed to determine if a transmission is in good condition would be to first check the fluid level as you mentioned. If the fluid level is low or the condition of the fluid is sub par, I would recommend having the fluid changed. After checking the fluid, driving the vehicle with a variance of engine speeds will also help to determine if the vehicle’s transmission is performing properly. Other than these two tests, you can also check the vehicle with an OBD2 scanner to determine if any check engine light codes are present. Many times the trouble codes for the transmission will also cause the check engine light to be illuminated. If you would like to have your transmission inspected consider YourMechanic, as a certified mechanic can come to your home or office to inspect your transmission for you.

im a first time driver and i got a rx8 i want to know everything that i need to know about my car
ANSWER : Well, I won’t be able to tell you everything you will need to know about your car. But I can give you some general advice and knowledge that will certainly come in handy no matter what kind of car you own.

The number one thing with any car is to check your fluids. Some people will do this every time they fill up their fuel tank. Others will do it every 1,000 miles or so. What’s important is you get into the habit of checking your fluids on a regular basis. Whatever works for you. Since you are first time driver, I would recommend checking all fluids with every tank of gas. This will give you a feel for what happens with each fluid and the system they are a part of. The general rule of thumb for all fluids is, if you don’t see a leak, the fluid level is probably good. This isn’t a foolproof method though. Once you get to know your car better, it is a useful method of knowing if any fluids need to be checked asap.

Always check the engine oil. Of any other fluid, aside from your brake fluid, this is the most important. Mainly, it is the most likely to become low quickly and damage your motor. There doesn’t have to be an engine oil leak for your motor to run out of oil. This is why it should be check more often than any other.

Your brake fluid level can usually be checked through the clear reservoir that contains the brake fluid. Unless there is a leak, or the brakes are almost gone, brake fluid level will be constant with little change for a long time. Since it is the primary safety device on any vehicle, a quick glance to make sure it has fluid is easy enough.

Coolant or antifreeze is very important as well. If the fluid is low, it can cause a lot of damage to your motor. It is especially important to know that your coolant should never be checked if the engine is hot. Checking your cooling system when it is hot is very dangerous. Just don’t do it.

Gear oil and transmission fluid are also important. These two often don’t have an easy method of checking them. If the transmission is an automatic, it might have a dipstick. Other than that, this is a good example of a system that only needs to be checked if there is signs of a leak. All fluid should be replaced on a maintenance schedule that the manufacturer specifies.

Power steering fluid is similar to gear oil and transmission fluid. It will likely have a reservoir to check it, but really only needs to be checked if there are signs of a leak.

Fluids aside, you may want to find out more information about maintenance schedules for your car. If you have the owners manual, this is a good place to find that information. If not, the most reliable source is to ask a dealer. Maintenance schedules are determined by mileage for each system.

I assume you know you have a rotary motor and it is very different that all other motors on the road. Getting into how this is significant and would take sometime. I recommend reading up on rotary motors for more information.

If you would like someone to inspect your entire vehicle for more advice about what exactly your car needs at this mileage, I would have a complete inspection done in person to make sure your car is kept in great shape.

Good luck with your first car!