Volvo RWD 200 Forum

INDEX FOR 10/2025(CURRENT) INDEX FOR 12/2002 200 INDEX

[<<]  [>>]


 VIEW    REPLY TO THIS MESSAGE    PRINT   SAVE 

Help with fuel pump and relay diagnosis 200

Hi,

I don't know if you did this or not, To test the relay.
Open up the relay and look at each side of it. Do the contacts look ok as not burnt black?
There are two sets or one unit on each side..
You can push either one down to make the contacts work.
You can also use a rubber band and small pieces of wood to hold each one down individually.
I keep Popsicles sticks in my tool box because they can help you lick other problems. (:-)

When cranking the engine, observe if both are closing.
The ECU then in turn grounds the injectors so the power will flow through them.
Same goes for the pumps.

This is why Art wanted you to put a test light on the orange wire under the rubber boot of the AMM.
The orange wire power more than just the injectors but even the AMM.

The ICU gets a signal from the distributor, when cranking or running.
That turns on the ECU that turns on the relays. ITS All about sequences.

You said the cars runs with the pumps jumpered? So that puts all the other stuff working and you are back to pumps or a relay circuit malfunction.
Grounds or a Non -operating ECU circuit can be a problem.
You have to isolate it down to an area of either circuit or broken parts going out to the pumps.

Like Michael says, powering up each pump directly helps diagnose the pumps.

I hope I shed some light on what you need to investigate.

Phil






THREADED THREADED EXPANDED FLAT PRINT ALL
MESSAGES IN THIS THREAD

New Help with fuel pump and relay diagnosis [200]
posted by  vadimk11  on Sun May 19 19:55 CST 2019 >


<< < > >>



©Jarrod Stenberg 1997-2022. All material except where indicated.


All participants agree to these terms.

Brickboard.com is not affiliated with nor sponsored by AB Volvo, Volvo Car Corporation, Volvo Cars of North America, Inc. or Ford Motor Company. Brickboard.com is a Volvo owner/enthusiast site, similar to a club, and does not intend to pose as an official Volvo site. The official Volvo site can be found here.