Help,no Power To Fuel Pump

[traceysr33]

hi

after fitting new exhaust today(3'' turbo back xforce) car started fine and idled for 15 min

we took it off hoist and was reversing it out when it stalled

after some diagnostics we discovered there was no power to fuel pump

all fuses ok

all relays ok

its got me stumped

i hot wired fuel pump,car started and was not throwing check engine ect,so i drove home

drive home was fine,no stalling ect

its now sitting in driveway

i cant seem to locate a wiring diagram anywhere on web

has the ecu cut power for a reason??

or cuold it simply be a wiring issue

can anyone shed some light ?

have i missed something obvious

or is there a known problem with wiring to fuel pump or sensors when fitting bigger exhaust

i could run a fused and relayed wire to power up on ignition to run pump,but i would rather find the fault

thanks in advance

ian

Edited July 27, 2013 by traceysr33

[traceysr33]

another question on sensors

the 1st sensor behind turbo is an oxygen sensor??

the second one in rear of cat is an egt sensor??

even if these were not reading correctly due to new exhaust it wouldnt shut down fuel pump,or would it??

[mad082]

To answer the questions in your second post, having neither of those connected should have no affect on the fuel pump.

[traceysr33]

well ive checked the ecu(in pass kick panel?) and term 18 (fuel pump power supply) has no power

i have pulled rear seat out and got to fpcm

if its faulty would that stop the ecu powering up the fuel pump?

thanks

Edited July 28, 2013 by traceysr33

[mad082]

Does the car have an immobilizer at all? If it is playing up then it could cause the problem

[traceysr33]

found issue

9th fuse from bottom on rh side of fuseblock in cab kept blowing

upped it to 15 amp and power was restored to pump

dont know what fuse is cause its all in jap,but its obviously in the fuel pump circuit

had the fkin back seat out

removed and replacer fpcm

and all it was was a fuse

never trust anyone else to say "yep checked all the fuses under dash and there all ok"

even if he is a mechanic

time for beers

heaps of beers

thanks guys for all your assistance

[Ben C34]

found issue

9th fuse from bottom on rh side of fuseblock in cab kept blowing

upped it to 15 amp and power was restored to pump

dont know what fuse is cause its all in jap,but its obviously in the fuel pump circuit

had the fkin back seat out

removed and replacer fpcm

and all it was was a fuse

never trust anyone else to say "yep checked all the fuses under dash and there all ok"

even if he is a mechanic

time for beers

heaps of beers

thanks guys for all your assistance

take a photo of the jap name of the fuse. peeps on here could translate it

[traceysr33]

here it is

[Ben C34]

It says "engine controller" whatever that means!

[Ben C34]

Japanese at high school finally paid off!

[traceysr33]

thanks mate

that may explain why it cut power to fuel pump

dont spose you want to translate the rest for everyones benefit?

thanks again

[R.3.2.G.T.R]

thats done already, have a search and you can print and paste that one over the top of your cover if u wish

thanks mate

that may explain why it cut power to fuel pump

dont spose you want to translate the rest for everyones benefit?

thanks again