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Fuel Pump Current Ramping

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6 years 9 months ago #11863 by karim
Fuel Pump Current Ramping was created by karim
How do locate fuel pump (fuse or Relay) on my toyota avalon 2012?

I have Verus and Low Amp Probe. I dont know if it fuse or relay for fuel pump?

what is toyota abbreviation for fuel pump fuse or relay?

Thank you all

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6 years 9 months ago - 6 years 9 months ago #11865 by Andy.MacFadyen
Replied by Andy.MacFadyen on topic Fuel Pump Current Ramping
Try fuse EFI No1 (25 amp) in the engine compartment but ISTR it supplies more than the fuel pump.
" We're trying to plug a hole in the universe, what are you doing ?. "
(Walter Bishop Fringe TV show)
Last edit: 6 years 9 months ago by Andy.MacFadyen.

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6 years 9 months ago #11866 by karim
Replied by karim on topic Fuel Pump Current Ramping
Thank you Andy

I did but it doesnt give me pure waveform of fuel pump since it is related to some other components too.

Any other suggestion?

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6 years 9 months ago #11867 by Andy.MacFadyen
Replied by Andy.MacFadyen on topic Fuel Pump Current Ramping
I don't see that many Toyotas -- how easy is access at the tank end?
" We're trying to plug a hole in the universe, what are you doing ?. "
(Walter Bishop Fringe TV show)

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6 years 9 months ago #11868 by karim
Replied by karim on topic Fuel Pump Current Ramping
Good suggestion... thank you very much.
You hit the nail on the head.
God bless you.

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6 years 9 months ago - 6 years 9 months ago #11869 by Andy.MacFadyen
Replied by Andy.MacFadyen on topic Fuel Pump Current Ramping
Apparently Toyota call the fuel pump relay the "Circuit Opening" relay or "CIR OPN" I will see if I can dig up more
" We're trying to plug a hole in the universe, what are you doing ?. "
(Walter Bishop Fringe TV show)
Last edit: 6 years 9 months ago by Andy.MacFadyen.
The following user(s) said Thank You: karim

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6 years 9 months ago - 6 years 9 months ago #11870 by Tyler
Replied by Tyler on topic Fuel Pump Current Ramping
You could also try jumping across the load side of the C/OPN relay, and take a current reading there. Be careful to make sure you're jumping the correct pins, as always. ;-)

EDIT: Andy thinking along the same lines. :lol:
Last edit: 6 years 9 months ago by Tyler.

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