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Thread: 3P's TCCS Disassembly/Analysis

  1. #751
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    Default Re: 3P's TCCS Disassembly/Analysis

    e43d931s-960.jpg

    JZX100 ECU test. 3 boards running 68pin denso MCUs from external RAM. 540cc injectors from Toyota Caldina. No MAF. Engine tends to stall.

    Last edited by mentat-vvo; May 2nd, 2017 at 08:36 PM.

  2. #752
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    Default Re: 3P's TCCS Disassembly/Analysis

    When you get around to it...how hard would it be to switch from 550cc injectors to 680 or larger? After you produce the modified PCM.
    Our Constitution was made only for a moral and religious people. It is wholly inadequate to the government of any other.

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  3. #753
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    Default Re: 3P's TCCS Disassembly/Analysis

    There's a "magic" constant exist in the code. Works similar to the "req fuel" constant in mega$quirt.
    JZX90, 1JZ-GTE, MAP-based, also has this constant and could be tuned up to 850cc injectors. Maybe even more.

  4. #754
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    Default Re: 3P's TCCS Disassembly/Analysis

    7M-GTE code (gray connectors) for IDA with some comments
    https://yadi.sk/d/JLxfDOfH3LeLvZ
    I'm currently working on the replacement of a Karmann vortex type AFM with a "hot-wire" one from JZX100.
    Also, I'm planning to replace altimeter MAP with a MPXH6400. It is strange that internal altimeter MAP has such a priority along with other ADC channels. Although the altimeter MAP has lots of pins, only three of them are actually used.

    9f14299s-960.jpg

  5. #755
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    Default Re: 3P's TCCS Disassembly/Analysis

    I've made experimental ECU with stock AFM, equipped with my external memory module + upgrade of the MCU (7433->5B25CT-1, which has +100 bytes of RAM).
    Changes that were made:
    1) Stock barometer MAP became external; can be easily replaced by an MPXH6400 (20kPa - 400 kPa)
    2) A communication port with a bluetooth module / USB-RS232TTL for comms/firmware upgrade was attached
    3) 5-pin connector was attached for an external hot-wire AFM (5 signals: +B, VG, THA, E2, EVG); ADC6 was used for this through 47nF/2k7 RC-filter

    Stock code will be modified so that I will be able to record logs for MAP/hot-wire AFM to replace karmann vortex AFM either to a hot-wire type or to MAP.

    IMG_5548.jpg
    Last edited by mentat-vvo; August 5th, 2017 at 05:30 AM.

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