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  1. shelbyk7

    (Fairly urgent) LX470 AHC (frt riding bumpstop) no AHC dash light or service lights

    Thank you, that’s what I was missing, going low first
  2. shelbyk7

    (Fairly urgent) LX470 AHC (frt riding bumpstop) no AHC dash light or service lights

    Okay, trying to set baseline pressures (adjust tbar and level front shocks) What are the ideal pressures at LO N HI? Here’s my pressure for N and Hi Why does N show no pressure?
  3. shelbyk7

    (Fairly urgent) LX470 AHC (frt riding bumpstop) no AHC dash light or service lights

    Update: FIXED! AHC ecu was fried, replaced it and all worked like new Thanks for all the help!
  4. shelbyk7

    (Fairly urgent) LX470 AHC (frt riding bumpstop) no AHC dash light or service lights

    I have received the replacement AHC ECU Will try to install today I have a Tesla screen conversion , does the head unit have anything at all to do with AHC ecu? do they communicate at all? I wouldn’t think so but wanted to check in case it could be reason for the original AHC ecu failure?
  5. shelbyk7

    (Fairly urgent) LX470 AHC (frt riding bumpstop) no AHC dash light or service lights

    Okay, was trying to figure out why some manual tests wouldn’t work, one of the tests for AHC ecu and AHC main relay (connected to AHC ecu) was to connect with jumper from TS and CG of DLC3. That’s when I noticed there wasn’t a pin in that Slot , did some research and still can’t figure out...
  6. shelbyk7

    (Fairly urgent) LX470 AHC (frt riding bumpstop) no AHC dash light or service lights

    I will check it out
  7. shelbyk7

    (Fairly urgent) LX470 AHC (frt riding bumpstop) no AHC dash light or service lights

    So what would cause my meter to not “beep” for continuity?
  8. shelbyk7

    (Fairly urgent) LX470 AHC (frt riding bumpstop) no AHC dash light or service lights

    I have taken the dash off to test ecu and the AHC relay (the one attached to the ecu) So the test I performed (pic Attached) When I tested with meter, terminals 2&4 I got OL, terminals 1& 3 I got 62ohms but my meter wasn’t beeping for continuity? Can you have continuity while have 62ohms...
  9. shelbyk7

    (Fairly urgent) LX470 AHC (frt riding bumpstop) no AHC dash light or service lights

    Have the new laptop w Techstream Tried again and getting same errors Took off alternator connector and it was clean and tight , pushed it back on Where exactly can I test the ground and power for AHC ecu?
  10. shelbyk7

    (Fairly urgent) LX470 AHC (frt riding bumpstop) no AHC dash light or service lights

    Okay I’ll try the bulb switch However, with the AHS not showing on the dash, I checked the ecu as well for any plugs that could have been removed from the AHS ecu and everything is still plugged in? That’s what I’m trying to figure out is what all could cause the dash to NOT display AHC...
  11. shelbyk7

    (Fairly urgent) LX470 AHC (frt riding bumpstop) no AHC dash light or service lights

    Do any of you know whether or not the AHS switch on center console could affect the whole system like what I have? The switch only lights up the bottom button (up and down AHS height) (pic attached) Could that switch being out cause these problems?
  12. shelbyk7

    (Fairly urgent) LX470 AHC (frt riding bumpstop) no AHC dash light or service lights

    I am getting power to all of the fuses and fusible links, checking grounds now, are there some grounds that you know are related to the AHC?
  13. shelbyk7

    (Fairly urgent) LX470 AHC (frt riding bumpstop) no AHC dash light or service lights

    I did not know AM1 was one of them, I also was t aware of the 2 fusable off the battery Will check those here shortly
  14. shelbyk7

    (Fairly urgent) LX470 AHC (frt riding bumpstop) no AHC dash light or service lights

    Okay, I tried it with engine running and still can’t get it to connect to AHC, anyone have suggestions now?
  15. shelbyk7

    (Fairly urgent) LX470 AHC (frt riding bumpstop) no AHC dash light or service lights

  16. shelbyk7

    (Fairly urgent) LX470 AHC (frt riding bumpstop) no AHC dash light or service lights

    okay, I have checked the 2 fuses and single relay which were all good I then hooked up Techstream (TS) It won’t let me connnect to the AHS ecu (picture attached) is there any kind of reset or ‘wake-up’ method for the ecu? Also, I have the vehicle off when doing this, wanted to verify that is...
  17. shelbyk7

    (Fairly urgent) LX470 AHC (frt riding bumpstop) no AHC dash light or service lights

    Well, I tested the AHC fuses and relay. All test good ? I do have suspicion that my AHC switch could be bad
  18. shelbyk7

    (Fairly urgent) LX470 AHC (frt riding bumpstop) no AHC dash light or service lights

    Wow, I can’t believe I missed that Will test some fuses, connect and then report back Can a bad AHC switch cause the system to not show on dash?
  19. shelbyk7

    (Fairly urgent) LX470 AHC (frt riding bumpstop) no AHC dash light or service lights

    It’s a 2004 actually, I was wrong in original post
  20. shelbyk7

    (Fairly urgent) LX470 AHC (frt riding bumpstop) no AHC dash light or service lights

    Yes I am
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