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1st Gen Haltech ECU Discussion

Discussion in '1st Gen. Tacomas (1995-2004)' started by Speedytech7, Jul 19, 2022.

Page 142 of 142
  1. Jun 13, 2025 at 8:22 AM
    #2821
    Speedytech7

    #2821
    Speedytech7 [OP] Toyota Cult Ombudsman

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    You can use a stepper output (they can function like a DPO) but you have to make sure it is set to low side control in the wiring screen. If it is set to high side it won't hurt anything but it just won't work either.
     
    Speedytech7, Jun 13, 2025 at 8:22 AM
    #2821
  2. Jun 13, 2025 at 8:27 AM
    #2822
    Torspd

    #2822
    Torspd Tor-nication

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    If I had my laptop with me, I could take a look. I think it is low side. However, the Passenger OCV just makes an occasional loud fast rattle/clicking noise, but very little if any phase change.
     
    Torspd, Jun 13, 2025 at 8:27 AM
    #2822
  3. Jun 13, 2025 at 8:30 AM
    #2823
    Speedytech7

    #2823
    Speedytech7 [OP] Toyota Cult Ombudsman

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    Sounds like part failure (could be the solenoid or the actual phaser unit, I know some toyota phase units leak internally when they go bad), but always worth verifying the wiring and setup first. Maybe it has bad continuity on the +12v side or something.
     
    Last edited: Jun 13, 2025 at 8:35 AM
    Speedytech7, Jun 13, 2025 at 8:30 AM
    #2823
    Torspd[QUOTED] likes this.
  4. Jun 13, 2025 at 10:11 AM
    #2824
    Torspd

    #2824
    Torspd Tor-nication

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    The phaser itself is brand new OEM. I just installed last weekend basically. The OCV could be culprit. Since it is off of a used engine of mine.
     
    Torspd, Jun 13, 2025 at 10:11 AM
    #2824
Page 142 of 142

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