A Question? | Page 4 | FerrariChat
Buy

A Question?

Discussion in 'Technical Q&A' started by thxenzo, Jun 29, 2010.

This site may earn a commission from merchant affiliate links, including eBay, Amazon, Skimlinks, and others.

Page 4 of 4
  1. csun213

    csun213 Karting

    Feb 1, 2006
    117
    #76 csun213, Jun 18, 2012
    Just wondering how you are doing with this project, would love to have an update when you have time. Thanks
     
  2. JPN800

    JPN800 Karting

    Apr 12, 2010
    157
    New York
    Full Name:
    JP
    #77 JPN800, Jun 20, 2012
  3. thxenzo

    thxenzo Karting

    Jan 17, 2009
    51
    Illinois
    Full Name:
    name
    #78 thxenzo, Oct 30, 2025 at 11:13 AM
    Hello to all. I have an Issue and any help would be appreciated:

    On the dash I have "-" ... N will not appear. Only "-" no Gears work.
    P1632 P1627 CAN timeout.

    Car is in Neutral
    Power WHT RED to TCU ...OK
    Key power YELLOW to TCU...OK
    Grounds BOTH ... OK
    ...
    F1 Pressure sensor. KEY on ...4.5 V
    Clutch sensor KEY on ...4.5V
    Actuator Plugs Grey and Blk, Key on (Both)... 4.5V
    >>>>Suggesting TCU 176552 Works!

    NOW, Also

    Jumped F1 Pump 12v+ at Relay runs great. OK
    *****F1 Relay not Priming, with door or When Key on.
    ORANGE WIRE AT F1 RELAY is Trigger Coil for relay.

    All Harnesses Appear Fine all Connections Checked three times. GREEN WHITE wires (CAN LINE) Connected.
    All fuses and All Relays Checked and tri LH and RH behind seats.ple swapped.

    Understanding the F1 relay orange wire
    • Function: The orange wire (pin 85) is the control input to the relay's coil. When it receives a signal from the TCU, the relay's internal switch is activated.
    Please, I need your input. I have no other tricks! Am I missing something here. One Questionable Item is the WINDOW LIFT ECU as the orange wire signal originates at the Drivers Door at striker when opened.

    Could CAN lines be the issue... Any Other Ideas.

    Your Help is appreciated! Thanks in advance
    Image Unavailable, Please Login Image Unavailable, Please Login Image Unavailable, Please Login Image Unavailable, Please Login Image Unavailable, Please Login
     
  4. thxenzo

    thxenzo Karting

    Jan 17, 2009
    51
    Illinois
    Full Name:
    name
    #79 thxenzo, Oct 30, 2025 at 11:14 AM
    Btw it is that car! Scrambled Eggs!
     
  5. Qavion

    Qavion F1 World Champ
    Silver Subscribed

    Feb 20, 2015
    14,646
    Sydney
    Full Name:
    Ian Riddell
    #80 Qavion, Oct 30, 2025 at 3:57 PM
    It doesn't mean all the TCU is working.

    The F1 TCU talks directly to the driver's door switch. There are splices in the switch wiring which send the door signal to the F1 TCU, the Window ECU and the Instrument Panel (for door open indications). If you have door open indications, the switch is working.

    Some internal component of the TCU may be faulty, causing lack of pump operation and loss of gear display. I don't see the CAN Bus causing both of these issues (unless the F1 TCU refuses to run the pump in the absence of a CAN Bus signal???). Make sure the TCU CAN Bus plug 12P is is mated with connector 17G behind the right hand seat.
    17 G shown below:

    Image Unavailable, Please Login

    (gated car photo... the CAN Bus plug has no connection to the F1 TCU's 12P connector).

    Check the resistance across the pins. Should be 60 ohms on the 17G side.
     
  6. thxenzo

    thxenzo Karting

    Jan 17, 2009
    51
    Illinois
    Full Name:
    name
    #81 thxenzo, Oct 30, 2025 at 4:38 PM
    Thank you! I will do as instructed. Understood that partial TCU may have error.
    The Green White plug is mated... but I will look at it closely.

    Also,I see Plug 9G (Engine Control Signal) not plugged anywhere... .
    Has (PIN 1 YELLOW Key on 12V). (Pin 2 BRNBLK 0V) (Pin3 BLK 0V) (YELLOWWHITE 0V)
    What is it, and should it be Jumped. Does it do anything or is it for Diagnosis?
    Image Unavailable, Please Login Image Unavailable, Please Login Image Unavailable, Please Login Image Unavailable, Please Login Image Unavailable, Please Login
     
  7. Qavion

    Qavion F1 World Champ
    Silver Subscribed

    Feb 20, 2015
    14,646
    Sydney
    Full Name:
    Ian Riddell
    #82 Qavion, Oct 30, 2025 at 9:31 PM
    I thought it was a diagnostic plug, but looking at the photo in post #80, it looks like it has wires on both sides.

    The white/yellow (BG) wire is vehicle speed (from the instrument panel)
    The brown/black (MN) wire is tachometer information from the RH Motronic ECU.
    The yellow wire is key power
    The black wire is ground.

    Can't say I've noticed this before

    Here's another photo:

    Image Unavailable, Please Login
     
  8. Qavion

    Qavion F1 World Champ
    Silver Subscribed

    Feb 20, 2015
    14,646
    Sydney
    Full Name:
    Ian Riddell
    #83 Qavion, Oct 30, 2025 at 10:16 PM
    Disregard... I was looking at the wrong plug (i.e. 19G/22G).

    So I guess 9G must be a loose diagnostic plug.
     
  9. thxenzo

    thxenzo Karting

    Jan 17, 2009
    51
    Illinois
    Full Name:
    name
    #84 thxenzo, Oct 30, 2025 at 10:49 PM
    I can not link it to any other use either! Good Day M8:). Thanks for helping ... look at my thread A Question from the beginning, and tell me if Im nuts!
     
  10. Qavion

    Qavion F1 World Champ
    Silver Subscribed

    Feb 20, 2015
    14,646
    Sydney
    Full Name:
    Ian Riddell
    #85 Qavion, Oct 31, 2025 at 1:22 AM
    LOL... rather you than me. You seem to be making progress, though.
     
  11. FerrariDublin

    FerrariDublin F1 Rookie

    Jun 14, 2009
    3,458
    Dublin, Ireland
    Full Name:
    Greg
    #86 FerrariDublin, Oct 31, 2025 at 4:51 AM
    Great thread revival. I'm afraid it's all above my pay-grade but I wish you luck and will be watching and waiting for success to be declared!
     
  12. thxenzo

    thxenzo Karting

    Jan 17, 2009
    51
    Illinois
    Full Name:
    name
    #87 thxenzo, Oct 31, 2025 at 8:38 AM
  13. thxenzo

    thxenzo Karting

    Jan 17, 2009
    51
    Illinois
    Full Name:
    name
    #88 thxenzo, Oct 31, 2025 at 8:39 AM
  14. thxenzo

    thxenzo Karting

    Jan 17, 2009
    51
    Illinois
    Full Name:
    name
    #89 thxenzo, Oct 31, 2025 at 8:49 AM
    Last edited: Oct 31, 2025 at 8:54 AM
    I am seeing some renewed interest in the Modena 360 these days on Youtube. I should have done a Youtube Channel back in 2009 of this great Revival.

    My first one the Yellow one was a Gated car. Perfect, but it did not satisfy!
    The Second car, I drove with pride as I had fixed major issues on my own.
    This third car, Is the car I drew on the wall at my moms house... and I love it!

    ...a childhood dream that became reality:). THXENZO, thank you very much Mr Ferrari!
    Image Unavailable, Please Login Image Unavailable, Please Login
     
  15. thxenzo

    thxenzo Karting

    Jan 17, 2009
    51
    Illinois
    Full Name:
    name
    #90 thxenzo, Oct 31, 2025 at 8:52 AM
Page 4 of 4

Share This Page