Question about 1991 Toyota Pickup

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How do you pull the codes for a 91 Toyota Pickup. Check engine lite is on.

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If it's an OBD1 car (typically before 1996) you can manually access the codes and find out what they are by watching the "check engine" light blink. If it's an OBD2 car, then have to have a code reader.

The good news is that many auto parts stores will read the codes for you for free (autozone). Just be careful listening to their diagnosis.

Good luck.

Posted on May 07, 2010

Testimonial: "Great info I will try it tonight"

  • ZJ Limited
    ZJ Limited May 07, 2010

    I find this procedure, test it for retrieving trouble

    1 . Before
    retrieving codes, verify CHECK ENGINE light comes on with ignition on
    and engine off. The CHECK ENGINE light should go off when engine is
    started. If light remains on, system has detected a malfunction or
    2 . Ensure battery voltage is greater than
    11 volts and charging system is okay. Engine should be at normal
    operating temperature.
    3 . Apply parking brake. Shift transaxle
    to Neutral (M/T) or Park (A/T). Turn A/C and all accessories off. Close
    throttle valve.
    4 . Turn ignition on with engine off. Install
    jumper wire between terminals TE1 (or T) and E1 in engine check
    connector. (Location of DLC might differ from diagram as it is only for
    illustration purposes).

    5 . Count number of flashes from CHECK ENGINE light. If system is
    operating properly (with no codes), CHECK ENGINE light will flash
    continuously and evenly.

    NOTE: If CHECK ENGINE light will not flash diagnostic codes, see

    6 . If code exists, digits
    of each code will flash at 1/2 - second intervals, with a 1 1/2 - second
    pause between first and second digits.
    7 . If more than one code
    is stored, a 2 1/2 - second pause will occur before next code is
    flashed. Once all codes are displayed, a 4 1/2 - second pause will occur
    then code(s) will be repeated.
    8 . Codes are displayed
    from the smallest to largest code. After codes are retrieved, remove
    jumper wire to exit diagnostic mode.

    Ignition coils and ignitors
    do fail now and then resulting in no sparks. Perform a spark test to
    confirm if sparks are available and bright blue and not dull orange.

    Tell us news (remember comment and rated this post).


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I have 3 flashes. They are, Flash.... Flash.... 2 second pause Flash....I've got a video of it. Can I send it anywhere for anyone to see it?

Posted on Dec 06, 2011


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