2007 sedan fuel pump not running and check engine light - Toyota Yaris Forums

nitrus10032 · 06-13-2013, 10:17 PM

Thanks for the help!

It looks like the integration relay is working fine. The resistance across all sets of relay pins is ~330 ohms however. But apply the 9 volts to each closes them and gives me continuity between the pins.

The C/OPN tests don't look good though. There appears to be no continuity between 4B-9 (red wire) and 4E-5 (violet wire). When the engine is in the on position and I've connected one lead of the multimeter to 4A-8 and the other to my battery's negative terminal there is no voltage. So it appears the C/OPN relay is the problem.

Is that part replaceable or does the whole assembly have to be replaced? Do you have the relevant part numbers?

Again, thanks a ton for your help!

Thread Tools
Show Printable Version Email this Page
Display Modes
Switch to Linear Mode Switch to Hybrid Mode Threaded Mode

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Fuel filter replacement	jaimico	DIY / Maintenance / Service	43	03-07-2023 12:05 PM
*The Engine Oil Bible*	Hussain-Vtec	Performance Modifications	20	09-28-2016 03:47 PM
The Nitrous Thread	ChinoCharles	Performance Modifications	116	02-16-2016 04:07 PM
Car shuts off when A/C turned on...	Howster	DIY / Maintenance / Service	33	07-06-2013 06:00 PM

06-13-2013, 10:17 PM	#5
nitrus10032 Drives: 2007 Toyota Yaris Join Date: Apr 2012 Location: SoCal Posts: 3	Thanks for the help! It looks like the integration relay is working fine. The resistance across all sets of relay pins is ~330 ohms however. But apply the 9 volts to each closes them and gives me continuity between the pins. The C/OPN tests don't look good though. There appears to be no continuity between 4B-9 (red wire) and 4E-5 (violet wire). When the engine is in the on position and I've connected one lead of the multimeter to 4A-8 and the other to my battery's negative terminal there is no voltage. So it appears the C/OPN relay is the problem. Is that part replaceable or does the whole assembly have to be replaced? Do you have the relevant part numbers? Again, thanks a ton for your help!