If you have problems with the check engine light of a 2002 Toyota Tundra, they approach with an OBD2 scanner that is designed for that vehicle. On most generic scanner can be for most makes of vehicles are used and if you do not specify if they are good for this 2002 Toyota Tundra may not be the correct error codes.
To resolve the 2002 Toyota Tundra error codes, please consider the following:
1.) The diagnostic connector for this vehicle is the situationright side of the steering column, under the dashboard.
2.) This vehicle model uses a two-trip detection analysis in which the error code into memory will not be flashed on the dashboard. Instead, it is only on the 2nd Times the error code is detected to be flashed. This usually happens when you use a generic scanner, but it will not happen if you used the garage or in the authorized Toyota scanner.
3.) Toyota Tundra This model uses, including "FreezeData frame "system, in which the actual engine condition factors in the general scanner displays when the error code displayed. These factors usually include engine temperature, vehicle travel speed and other sensors information to the error code. This data is very important in identifying the suspected circuit or wiring causing the code. However, if it shows multiple codes in the generic scanner, the data described here applies only to the first code, which showsup. Thus users will prevent them from switching between the codes for other data, which can lead to confusion.
Troubleshooting tips:
The most common error code of the 2002 Toyota Tundra model is the failure of the 4 oxygen sensors. If you have a 4.7L engine, two of these sensors are located on the engine exhaust manifold and the other 2 behind the catalytic converters. When these sensors are your fault code, contact your Toyota dealer could not immediately be coveredunder the warranty of the vehicle. This is especially true if the vehicle under 100k mileage. However, if the vehicle is not available and you need to repair the problem yourself, try these:
1.) Measure the right oxygen sensor signal voltage as a vehicle wiring diagram. Exhaust manifold, the sensor voltage should vary between 0.1 volts to 0.9 volts. A fluctuation difference of 0.5Volt becomes 0.7volt than normal and no shows a fluctuationdefective oxygen sensor.
2.) In measuring the back of the catalyst oxygen sensors should be used, the voltage reading of less volatility, because these sensors to monitor the effectiveness of muffler. Any fluctuation of about 0.2volt to 0.4 volts is considered normal.
3.) If the front exhaust manifold sensors are found to be defective, make sure that the exhaust manifold itself is not leaking or cracked. If the multiple is set, would the new Lambda sensors installedagain.
4.) Unless you have experience in testing electrical components, it is strongly recommended that you obtain an online help-mechanics at work on this oxygen sensors. A simple mistake such as incorrect use of electronic diagnostic tools can damage the engine computer.
If you can implement these techniques, you should be able to cover most of your check engine light fix error code 2002 Toyota Tundra.
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