Toyota Camry Trouble Codes Procedure

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Your Citation
Wright, Matthew. "Toyota Camry Trouble Codes Procedure." ThoughtCo, Jul. 19, 2016, thoughtco.com/toyota-camry-trouble-codes-procedure-4064561. Wright, Matthew. (2016, July 19). Toyota Camry Trouble Codes Procedure. Retrieved from https://www.thoughtco.com/toyota-camry-trouble-codes-procedure-4064561 Wright, Matthew. "Toyota Camry Trouble Codes Procedure." ThoughtCo. https://www.thoughtco.com/toyota-camry-trouble-codes-procedure-4064561 (accessed October 23, 2017).
Laptop diagnostics
Pulling Trouble Codes doesn't involve a laptop, for better or worse. Getty

This driver is having a terrible time translating the DTC, or Diagnostic Trouble Codes, being produced by his Camry's on board diagnostics computer. He's not alone, because this can be one of the most frustrating systems ever. Ironically, it was designed to make troubleshooting a car's problems easier and more clear, but getting to the point at which you can actually understand the code is another story.

Here, we try to explain it a little to make it easier to understand. Or it might just be more confusing. I can't make any promises. Jeff writes:

 

I have a 1994 Toyota Camry 2.2 liter 4 cylinder. I recently washed the engine at the car wash and noticed a short time, one hour, later that the check engine light was on. I have printed your page on 1994 Diagnostics Trouble Codes for Toyota. Is the check Connector under the hood on this model?

 

 

And will the check engine light flash 71 times for an EGR system malfunction? What does it do if there is another code, ie what kind of flash does it give at the end of the code to let you know that there is another code?

Nothing seems to be wrong. The car runs great and still gets great gas mileage. The light is still on as well. How do I reset it?

Thanks for your help!
Jeff

 

How to pull the DTCs and how to interpret the Malfunction Indicator Lamp (MIL) flashes.

 

Malfunction Indicator Lamp Check:

  1. The Malfunction Indicator Lamp (MIL) will come ON when the Ignition Switch is turned ON and the engine is not running. HINT: If the MIL does not come ON, proceed to troubleshoot the combination meter circuit. 

  2. When the engine is started, the MIL should go OFF.

     

    • If the lamp remains ON, the diagnosis system has detected a malfunction in the system.

    DTC Extraction In Normal Mode:

    1. Turn ignition switch ON.

    2. Using a jumper wire or SST, connect terminals TE1 and E1 of the Data Link Connector (DLC) 1 or 2.


    Data Link Connector 1 Is Mounted Behind The Right Strut Tower


    Example; Codes 12 And 31

    1. Read the DTC's from the Malfunction Indicator Lamp (MIL) by counting the number of blinks and pauses.

       

      • When two or more DTC's are present, the lower number code will be displayed first. The example shows codes 12 and 31.

    DTC Extraction In Test Mode:

    1. Initial conditions.

      • Battery positive voltage 11 volts or more. 

      • Throttle valve fully closed. 

      • Transmission in park or neutral position. 

      • Air conditioning switched OFF.

    2. Turn ignition switch OFF.

    3. Using a jumper wire or SST, connect terminals TE2 and E1 of DLC 1 or 2. NOTE: The test mode will not start if terminals TE2 and E1 are connected after the ignition switch is turned ON. 

    4. Turn ignition switch ON. 

      • To confirm that the test mode is operating, check that the MIL is flashing when the ignition switch is ON. 

      • If the MIL does not flash, proceed to the TE2 terminal circuit test under the "Diagnostic Charts".

    5. Start the engine. 

    6. Simulate the conditions of the malfunction as described by the customer. 

    7. After the road test, using a jumper or SST, connect TE1 and E1 of DLC 1 or 2.

    1. Read the DTC on the MIL by counting the number of blinks and pauses. I realize this is not your ideal way to communicate, but it's what they gave you, so roll with it. 

      • When two or more DTC's are present, the lower number code will be displayed first. The example shows codes 12 and 31.

    2. After completing the check, disconnect terminals TE1, TE2 and E1 and turn off the display.​

    Things to Think About

    When vehicle speed is 3 mph or below, DTC 42 (vehicle speed sensor signal) is output, but this is not abnormal. 

    • When the engine is not cranked, DTC 43 (starter signal) is output, but this is not abnormal. 

    • When the automatic transmission shift lever is in the "D", "2", "L" or "R" shift position, or when the air conditioner is ON or when the accelerator pedal is depressed, DTC 51 (switch condition signal) is output, but this is not abnormal.

      Format
      mla apa chicago
      Your Citation
      Wright, Matthew. "Toyota Camry Trouble Codes Procedure." ThoughtCo, Jul. 19, 2016, thoughtco.com/toyota-camry-trouble-codes-procedure-4064561. Wright, Matthew. (2016, July 19). Toyota Camry Trouble Codes Procedure. Retrieved from https://www.thoughtco.com/toyota-camry-trouble-codes-procedure-4064561 Wright, Matthew. "Toyota Camry Trouble Codes Procedure." ThoughtCo. https://www.thoughtco.com/toyota-camry-trouble-codes-procedure-4064561 (accessed October 23, 2017).