5th gen Multiple FI Codes, other

Discussion in 'Mechanics Garage' started by crewwolfy, May 16, 2021.

  1. crewwolfy

    crewwolfy New Member

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    I have the bike partially disassembled for other reasons (post likely nearby), so I thought this would be a good time to address some other issues. I'll reiterate that I've put ~45k drama free miles on this bike, but the FI light has been on as long as I can remember. Here are the issues:

    Code: 1 - MAP sensor
    Code: 2 - MAP sensor
    Cpde: 8 - TP (throttle position?) sensor
    Code: 10 - BARO sensor
    Code: 11 - speed sensor
    Also: the radiator fan does not kick in automatically. I've installed a toggle switch to turn it on. I've replaced the thermostat to no effect. I did have a coolant leak, but I've made some adjustments, but have yet to put the bike under any real pressure.
    Also: one connection to the PCM is delicate but connected. If you can recommend parts to replace a pin on the wire harness plug side, I'd appreciate it

    I'd like some guidance on how to attack these issues. Feel free to target one item. I've investigated and haven't noticed any obvious issues, so looking for advice.

    Thanks!
    Andy
     
  2. Darth Vader

    Darth Vader New Member

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    Are these current codes or historic codes? Clear the codes and start from new. Very unlucky to have 5 faults all at once, Id be checking grounds first.
    The orange block could be prime suspect.
     
  3. raYzerman

    raYzerman Insider

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    Agree, address the ground block and the main ground on the frame. Check connections to the items, including vacuum hoses. Clear the codes, start from fresh.
    The trick to replacing a pin in the ECU connector is finding a replacement pin..... remove pin, take pic and perhaps we can identify.....
     
  4. Paul Myers

    Paul Myers New Member

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    If I remember correctly a lot of these sensors have a common power supply coming from the computer. If there is a problem with a bunch of sensors I would check they are getting power at the sensor connector. It is probably a break or bad pin contact in the common sensor power wire or the ground of the computer.

    I tried to clip a section of the wiring diagram to show it but I can't get it into a compatible file type. I'll try again when I have more time.
     
  5. Paul Myers

    Paul Myers New Member

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    In regards to the fan. did you wait long enough to verify the switch is bad?
    It does not kick in until about 102 C (215 F) and I've seen it wait till 105 or 106 C (223 F). Uncomfortably high and I thought the fan switch was bad on mine too until I read the manual and waited until it got to 106 C and it kicked in.

    I thought about replacing the fan temp switch with an 85 C one which are common but the thermostat doesn't start to open until 95C and is fully open around 100C so an 85C fan switch would have the fan on before the thermostat is even openning.

    Many have put in manual switches to start the fan early in city traffic.
     
  6. crewwolfy

    crewwolfy New Member

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    Hey all. Apologies for the radio silence, just finishing up moving (same building & garage).

    Orange block and grounds, eh? I'll take a look. Is the orange block underneath the tail plastic? I ponied up for a service manual, so I should be able to use that to locate the grounds.

    For the fan, I've had the bike far warmer than 223F I'm afraid. Before installing the manual switch, it's shut down at ~250F. That was several years ago and doesn't appear to have warped the heads. I haven't let it get close to that high again. I'll do some more digging though; I recently had the brake switch blow out on my car, which I was able to isolate. I'll try to transfer those investigative skills.

    Much thanks all!
     
  7. Grum

    Grum New Member

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    image.jpeg
    The orange coloured Ground block is located and taped in the harness above your chain guard. It can cause multiple sensor failures, poor running, engine cutout, and the Fi light to strangely flash when blinkers are activated.
     
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