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Old 03-31-2015, 03:39 PM   #19
wilsonphil
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Drives: 2007 yaris
Join Date: Mar 2015
Location: LACA
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Hello All, first post!

So my other half was driving her 07 Yaris (180K) to school this morning and it dies, I have it towed home and do the tests above and I have no power on 4A-8 ok so I am thinking its the relay so I apply 12v to pin 4A-8 and i can hear the pump run, so I try to start and still nothing! so I remove the fuel hose at the engine and power the pump the same way and I get very black gas out of the line not a lot about 3 cups and then it stops. if I remove power to the pump and apply it again same thing happens. so I am assuming that the pump was on its way out and could of took out the relay. Anyone else ever seen this happen?
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Old 06-06-2016, 10:56 PM   #20
slick69dog
 
Drives: 2011 yaris
Join Date: Jun 2016
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2011 toyota yaris coupe manual trans.
Test so far: EFI relay at pins 1A-2 & 1A-3 read 175ohms
Powered the relay up and read 0.8ohms at pins 1A-1 & 1A-4.
Coil of C/OPN relay at 4B-9 & 4E-5 read 183 ohms
The contacts read 12.68 volts at pins 4A-8 & 4B-11
Then at fuel pump under rear seat WHT/BLK(-) cable & BLK(+) cable and got no voltage then put (+) lead to BLK cable and (-) lead to chasis and read 12.52 volts then (-) lead to WHT/BLK cable and (+) lead to battery terminal (+) and got no voltage .
Put a jumper cable from ground to 4E-5 turned key to on position and the pump came on so i turned the car over and it stared ran for 5 secs. and stalled out. Turned it over 2 more time but wouldnt start
Pulled the fuel line off the fuel rail and turned the key to the on position i can hear the pump on but no fuel or air came out.(note: jumper at 4E-5 was still in.)

Any feed back would be great !!!
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Old 06-06-2016, 11:01 PM   #21
slick69dog
 
Drives: 2011 yaris
Join Date: Jun 2016
Location: Pr
Posts: 2
2011 toyota yaris coupe manual trans.
Test so far: EFI relay at pins 1A-2 & 1A-3 read 175ohms
Powered the relay up and read 0.8ohms at pins 1A-1 & 1A-4.
Coil of C/OPN relay at 4B-9 & 4E-5 read 183 ohms
The contacts read 12.68 volts at pins 4A-8 & 4B-11
Then at fuel pump under rear seat WHT/BLK(-) cable & BLK(+) cable and got no voltage then put (+) lead to BLK cable and (-) lead to chasis and read 12.52 volts then (-) lead to WHT/BLK cable and (+) lead to battery terminal (+) and got no voltage .
Put a jumper cable from ground to 4E-5 turned key to on position and the pump came on so i turned the car over and it stared ran for 5 secs. and stalled out. Turned it over 2 more time but wouldnt start
Pulled the fuel line off the fuel rail and turned the key to the on position i can hear the pump on but no fuel or air came out.(note: jumper at 4E-5 was still in.)

Any feed back would be great !!!
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Old 06-07-2016, 05:26 AM   #22
CTScott
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Is your immobilizer light turning off when you insert the key?
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Old 12-14-2017, 05:05 AM   #23
Andry Mamy
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Drives: Sedan 2009
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Location: Madagascar
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Hello all, I want to know it there is a return system for the fuel for toyota yaris 2NZ-FE (1.3VVTI). My problem now is about consumption (too much).

Andry Mamy
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