Question about 2001 Toyota Avalon

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Where is the On Board Diagnostic (OBD) connector on the car.

Have "check engine" light and OBD code reader on order. Where is the OBD connector located on the car (2001 XLS Avalon)?

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  • Anonymous Mar 22, 2014

    where is obd connector port on 1997 previa

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  • Toyota Master
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It is under the dashboard, driver side. White, oblong female connector. One row of pins not as long as the other.

Posted on Sep 17, 2008

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What diagnostic socket have I got, after diagnostic tool


Question doesn't make sense. Explain more fully. What diagnostic tool do you have? I've never heard of a diagnostic socket. Do you mean the OBD connector? All models from 1996 on use a universal connector, called an OBD-II connector. On Board Diagnostics- since 1996, all vehicles sold in the USA are required to have the same connector. Fits any OBD scanner or code reader.

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Why does my check engine light come on?


You need to scan for trouble codes. Autozone and other parts stores will hook up a code scanner for free, and tell you the code numbers. Then you or a tech will start the diagnosis from there.


When the light comes on with the engine running, the engine computer has detected a fault in the engine management which it controls. It turns the light on to let you know there is a fault, and an associated trouble code, or at least a pending trouble code, has been stored in memory. All you have to do is plug in a code reader or scanner into the diagnostic port under the dash, turn the key to on, not start, and the codes will be displayed.

The diagnostic port is a federally required universal connector. All cars and trucks sold in the U.S. after 1996 models have the exact same connector, for communicating with the vehicle's main computer. The system is called OBD-II, for On Board Diagnostics, second generation, and is an example of good government regulations for the cleanest burning engines possible...less air pollution.

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I need to plug in the code reader


These vehicles are OBDI (OBD one) compliant not ODBII (OBD two). Therefore, the scanner required need to be specific for Chrysler vehicles. The diagnostic connector is located above the driverside inner-fender under the hood. To retrieve codes only, turn the ignition key ON-OFF-ON-OFF-ON and the check engine light will flash the codes.

Dec 15, 2013 | Cars & Trucks

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I have a 95 buick le saber 3.8 ltr. It back fires when running. But when check engine light is on it wont back fire. It does sound louder with check engine light on. Changed coils. I need help trying to...


You need to scan the computer for trouble codes. If the light was on, there must be codes set. On a '95 Buick, it would be OBD-1, On Board Diagnostics-first generation ('96 and later is all OBD-2).
The diagnostic connectors are different for OBD1 and OBD2, but in '94 and '95, GM was on some models using a "hybrid" diagnostic link connector. You will just have to find the right diagnostic connector to get your codes. The guys at autozone or a national parts store who do engine scans for free may help you figure it out. If it is a straight forward OBD 1 connector, a cheap code reader could scan for trouble codes. For the OBD1, you can also use a jumper wire between terminals
A & B of the diagnostic link connector. Turn key to on, and two digit codes will begin to flash on the check engine light. Code 12, for instance, would be a flash, pause, two short flashes, and longer pause before the next code appears. Code 12 by the way, just means that the computer is in diagnostic mode-after that any set codes will appear or be flashed. Code 55 may also be flashed-this code means the end of codes that are set.

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On-Board Diagnostic II (OBD II) Diagnostic Link Connector (DLC) Location in 1999 ford Ranger


the ecc diagnostic plug is what ford used b 4 going to the obd 2 system check with ur local ford dealer for checking codes

Jan 08, 2013 | Cars & Trucks

1 Answer

The check engine light is on my 1995 Saab 900s. I can not find a techician with the correct scanner.How can I turn off the light?


There are three ways to reset a check engine light.

1. Disconnect the battery, wait approximately 30 minutes, reconnect the battery. This resets the cars computer which also reset the check engine light. On newer OBD (on-board diagnostic) compliant vehicles this usually does not work. See step 2.

2. Reset using an OBD II reader. When you hook an OBD II code reader up to your vehicle, you can reset the computer using the code reader.

3. Fixing the problem. Generally the check engine light comes on for a reason. Usually it is emission related (sensors, gas cap) or electrical (faulty wiring). In this case the way to reset the check engine light is to fix the problem

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Does a 91 toyota camry have an outlet for a diagnostic code reader? It is a Can OBD2 diagnostic code reader


Hi, OBD2 didn't start until 1996, but you can extract your codes manually. You have to run a jumper in the data link connector under the hood. See procedure below. If you can tell me which engine you have, I may be able to provide the table of codes.


1982-95 MODELS All models except the 1MZ-FE engine is equipped with OBD I till 1995.

  1. Make sure the battery voltage is at least 11 volts.
  2. Make sure the throttle valve is fully closed.
  3. Place the gear shift lever in Neutral. Turn all accessories off.
  4. The engine should be at normal operating temperature.
  5. Using a jumper wire, connect terminals TE1 and E1 of the Data Link Connector 1 (DLC1).
  6. Turn the ignition switch ON , but do not start the engine. Read the diagnostic code by the counting the number of flashes of the malfunction indicator lamp.
  7. Codes will flash in numerical order. If no faults are stored, the lamp flashes continuously every 1 / 2 second. This is sometimes called the Normal or System Clear signal.
  8. After the diagnosis check, turn the ignition OFF and remove the jumper wire.
  9. Compare the codes found to the applicable diagnostic code chart. If necessary, refer to the individual component tests in this section. If the component tests are OK, test the wire harness and connectors for shorts, opens and poor connections.
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      What is the purpose of the connector to the immediate left of the hood release under the steering wheel of a 4X4 quad cab pickup truck? I could not find anything about it in the user manual.


      This is OBD - On - Board -Diagnostic Connector.
      On Board Diagnostics, OBD-II, is required on all automobiles and light trucks in the United States from 1996 onward. OBD-II is a set of specifications for monitoring and reporting on engine performance in modern automobiles.
      If the Service Engine light is on, then connecting a Code Scanner on OBD Connector, the Code is picked up and the code explanation can be found. If this is a False Code, this can be Cleared with the code scanner, after reading the code.

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      How do I reset my engine warning light on my 2006 Caravan? Thanks


      The On Board Diagnostic (OBD) system will turn on the check engine light (CEL) when a problem or inconsistency is detected. When this problem is repaired or somehow clears up on its own, the OBD system will clear the code after a series or diagnostic run cycles. If you determine that the CEL is on erroneously, it can be cleared with most OBD code readers. Also, use the code reader to determine what is wrong and repair it. But do not clear the code just because you don't want to see the CEL on, it is there for a reason. Hopefully, this will help to FixYa problem!

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