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2.7 liter fuel pump relay location

Discussion in '2nd Gen. Tacomas (2005-2015)' started by Food forester, Sep 14, 2023.

  1. Sep 14, 2023 at 11:05 AM
    #1
    Food forester

    Food forester [OP] Member

    Joined:
    Aug 22, 2023
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    Vehicle:
    05 Tacoma 2.7 Liter
    Aloha folks,

    Anyone know where the fuel pump relay is for the 2.7 liter 2nd Gen model?

    The online manual I found and how to video on YouTube showed the fuel pump relay in a certain spot where there is no relay or metallic sockets to receive a relay. I think the information available pertains to V6 models.

    I'm troubleshooting engine not starting. I have spark but no fuel. It starts when I add starter spray.

    Checked the C/OPN, EFN, and Air/fuel sensor relays by replacing with functional relay borrowed from the horn relay.
    No start.

    I also tested those relays in the horn relay location and they all worked.

    Tested IGN, EFN 1 & 2 fuses.

    Once I know 100% where the fuel pump relay is I can check it.

    I will replace the fuel filter and listen for the fuel pump operating when I try to start it.

    OBD2 code said replace crankshaft position sensor which was done but still no start. I did test crankshaft position sensor wiring going to ECM (PCU).

    I had extremely weak spark on one plug so I replaced them all and then was able to get truck to start with starter fluid... truck wouldn't start with starter fluid before the plug replacement.

    Now looking for next steps to in the troubleshooting tree.

    2nd gen relay and fuse map but doesn't seem to include the 2.7 liter.

    https://fuse-box.info/toyota/toyota-tacoma-2005-2015-fuses-and-relay/amp

    Mahalo for any help! I live far away shops and the few that are good reliable mechanics don't return phone calls since they are so busy.

    Food forester

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    PXL_20230914_171425630.jpg
     
  2. Sep 14, 2023 at 11:42 AM
    #2
    Dm93

    Dm93 Test Don't Guess

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    Predator tube steps, Ranch Hand grill guard, Magnaflow CatBack exhaust, Toyota tool box & bed mat, 2LO Module by @Up2NoGood, Rearview Compass/Temp Mirror, Tune by @JustDSM.
    Fuel pump relay is the C/OPN Relay.
     

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  3. Sep 14, 2023 at 4:14 PM
    #3
    Food forester

    Food forester [OP] Member

    Joined:
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    Vehicle:
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    Thank you! That helps a lot.
     
  4. Aug 22, 2024 at 3:53 PM
    #4
    ChrisTj

    ChrisTj New Member

    Joined:
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    Christian
    Vehicle:
    2009 tacoma
    Thank you
     

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