No power to fuel pump

Tiny
JUNIE320
  • MEMBER
  • 2006 TOYOTA VAN
  • 2.0L
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 120,000 MILES
I have the vehicle listed above, Isis. I'm not getting any power supply to the fuel pump during ignition nor cranking. I checked the fuel line to the engine and no fuel was coming up, so I checked the pump connection for power and didn't get any, but if I run 12v straight to the pump, the vehicle will run fine. Checked fuses and relays, I have no burnt fuse. Checked some websites online and my circuit opening relay is below the steering wheel, it's the blue 4 pin relay. I exchange the relay with the horn relay, and I still don't get anything at the pump, and the horn still works after the exchange. I tested where the EFI and horn relays are to try understand which side of the relay would get power during ignition and which side has constant power. After that, I tested by the circuit opening relay and realize I only have constant power. I'm not getting anything when the ignition is on. I hope I can get a feedback soon.
Thursday, April 23rd, 2020 AT 11:39 AM

1 Reply

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,724 POSTS
Hi,

First, I have to explain this vehicle isn't offered in the US. As a result, I have little to no technical information related. However, I'll try to help.

You mentioned there is no fuel or power to the fuel pump. Additionally, you mentioned the fuel pump relay. That could certainly be the cause if it is nonfunctional. I have no info as far as location, but here is a link explaining how to test one once you find it:

https://www.2carpros.com/articles/how-to-check-an-electrical-relay-and-wiring-control-circuit

Let me know if that helps and what you find.

Joe
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Thursday, April 23rd, 2020 AT 4:37 PM

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