Welcome to DSMtuners - the largest Mitsubishi Eclipse, Eagle Talon, 4G63t and 420A DSM performance resource on the web



















Login



Go Back   DSMtuners > DSM Forums > DSM Tech > Electrical Tech
Welcome to DSMtuners - the largest Mitsubishi Eclipse, Eagle Talon, 4G63t and 420A DSM performance resource
You are browsing the site as a GUEST. Please login (or register) and gain the ability to post on our site and interact with other DSMers. You also get to browse the site with fewer advertisements. It is FREE to join!

Electrical Tech: Wiring, turbo timers, electronic boost controllers, gauges, fuses, wiring harnesses, wire tucks, car audio, and all other electrical component discussions.

Reply  
 
LinkBack   Thread Tools
Old 03-18-2011, 05:03 PM Show Printable Version Show Printable Version   Email this Post to a Friend Email this Post      #1 (permalink)
Proven Member
 

compression's Avatar
Registered: Dec 2004
Tech Posts: 1,178
Photos: 12
Classifieds Rating: 3
Reputation: compression is extremely helpful and trustworthycompression is extremely helpful and trustworthy
Send a message via AIM to compression

no voltage at injectors


im supposed to get 12v from one of the pins in the injector plug im getting nothing.

car wont start obviously, i am getting spark, injectors arent pulsing or anything, i have ecm link with speed density and im not sure if its set up correctly, but even with the wrong/no mafs the injectors should still pulse, or at least have voltage. i have been sick lately and my head isnt very clear so if im being to vague just let me know.

ive checked the fuses, in car, underhood , and on the battery they were all ok as far as i remember,

the resistor pack is plugged in to a connector with a yellow & black wire.

the cam angle sensor is on and plugged in may or may not be 180* out ive swapped it both way just for curiousity.

ecu is getting power (check engine light comes on then goes off after 5 seconds)

im confused, sick and tired . any help would be EXTREMELY appreciated.



____________________________
-Brian, Check out my build thread!
View photos of this member's car 

mark post as helpful recommend reputation points    Reply With Quote
Old 03-18-2011, 09:42 PM Show Printable Version Show Printable Version   Email this Post to a Friend Email this Post      #2 (permalink)
Proven Member
 

sniver's Avatar
Registered: Feb 2006
Tech Posts: 674
Classifieds Rating: 2
Reputation: sniver is extremely helpful and trustworthysniver is extremely helpful and trustworthy
Ok so we need to figure out why the injectors are not getting power.

If the ecu light comes on, I think its safe to say the the mpi is powering up. that basically leaves you a wiring problem. Ensure you have power at pin 102 on the ecu( with key on), and if you do test the voltage on plug that goes to the resistor. pin 3, its red just like pin 102 for the ecu.

The injectors do not get a full 12volts FYI, they get something like 1.5-3. not positive on the exact though.


If memory serves me correctly.. for the CAS proper setting, you set the timing belt like your going to change the belt, you know properly aligned at top dead center. Then you'll see the cas flag has a dot on one side, this faces up, install the cas, Then set timing as required.

mark post as helpful recommend reputation points    Reply With Quote
Old 03-18-2011, 09:46 PM Show Printable Version Show Printable Version   Email this Post to a Friend Email this Post      #3 (permalink)
DSM Wiseman
 

steve's Avatar
Registered: Feb 2002
Tech Posts: 11,735
Photos: 12
Classifieds Rating: 21
Reputation: You can trust this leader of the site
The injector resistor plugs into the connector with the black/yellow, red, black/blue, black/white, and black/red wires. The connector with the blue, red, yellow, white, red, and black wires is for the ISC.

You may have them swapped, it's seems to be a common problem.

It's battery voltage you'll see at the injector when there is no load. When the injector is firing the resistor and injector make up a voltage divider between the battery and ground.

The injectors are powered from the MPI relay so you need to make sure the ECU is powering up and turning the MPI relay on.
Visit steve's homepage!  View photos of this member's car 

mark post as helpful recommend reputation points    Reply With Quote
Old 03-18-2011, 10:12 PM Show Printable Version Show Printable Version   Email this Post to a Friend Email this Post      #4 (permalink)
Proven Member
 

compression's Avatar
Registered: Dec 2004
Tech Posts: 1,178
Photos: 12
Classifieds Rating: 3
Reputation: compression is extremely helpful and trustworthycompression is extremely helpful and trustworthy
Send a message via AIM to compression
cars at my fathers shop , going there tomorrow to try and get it get fired up. just need a little help for things to check for, last time my super huge major problem was , i didnt have something plugged in , im praying this is the same situation.

come to think of it, the resistor is plugged into a connector that has a YELLOW wire, not a black/yellow (oh god please be so)

i never really knew about the correct way of setting the cas, i usually just put it on if it doesnt run flip it. good to know!

so for some reason if it ISNT the plug issue, i have to ensurepower at pin 102 on ecu. injectors get their power from the mpi , so if the mpi is getting power, which my ecu seems to be working fine because dsmlink connects and everything. is there any specific fuse that would cause an issue?


____________________________
-Brian, Check out my build thread!

Last edited by compression; 03-18-2011 at 11:35 PM. Reason: Auto-merged with previous post to prevent "bumping" within a 24 hour period Tips on avoiding the auto-merge feature - http://www.dsmtuners.com/forums/faq.php?faq=vb_faq#faq_bumping
View photos of this member's car 

mark post as helpful recommend reputation points    Reply With Quote
Old 03-19-2011, 07:50 AM Show Printable Version Show Printable Version   Email this Post to a Friend Email this Post      #5 (permalink)
DSM Wiseman
 

steve's Avatar
Registered: Feb 2002
Tech Posts: 11,735
Photos: 12
Classifieds Rating: 21
Reputation: You can trust this leader of the site
If you can talk to the ECU with DSMLink the MPI relay is turning on.

The red wire running to pin 3 of the injector resistor is the MPI power, just check it at that connector. If it's not there with the key turned on you'll have to trace it back ti the relay. No fuses between the two. The only MPI fuse is the one at the battery.
Visit steve's homepage!  View photos of this member's car 

mark post as helpful recommend reputation points    Reply With Quote
Old 03-19-2011, 12:55 PM Show Printable Version Show Printable Version   Email this Post to a Friend Email this Post      #6 (permalink)
Proven Member
 

compression's Avatar
Registered: Dec 2004
Tech Posts: 1,178
Photos: 12
Classifieds Rating: 3
Reputation: compression is extremely helpful and trustworthycompression is extremely helpful and trustworthy
Send a message via AIM to compression
what would be the reason turning the key doesnt turn the starter? the tuning the key on will activate at least one of the fuses in the kick panel, i have my gauges wired to it. and could this issue somehow be related? im just trying to get all my ducks in a row, once i get there im pretty much internetless and on my own lol.


____________________________
-Brian, Check out my build thread!
View photos of this member's car 

mark post as helpful recommend reputation points    Reply With Quote
Old 03-19-2011, 01:07 PM Show Printable Version Show Printable Version   Email this Post to a Friend Email this Post      #7 (permalink)
Proven Member
 

sniver's Avatar
Registered: Feb 2006
Tech Posts: 674
Classifieds Rating: 2
Reputation: sniver is extremely helpful and trustworthysniver is extremely helpful and trustworthy
I think Idescribed how to check the ignition switch. Maybe not?

The mpi power is not what feeds the ignition switch.

Did I link a copy of the fsm last time we talked?

Either you have a bad switch,starter relay, or wire going to the starter. You have power to the switch, it turns the ecu on. And you make it work with a seperate button, so the starters good.



Sent from my Droid

mark post as helpful recommend reputation points    Reply With Quote
Old 03-19-2011, 01:33 PM Show Printable Version Show Printable Version   Email this Post to a Friend Email this Post      #8 (permalink)
DSM Wiseman
 

steve's Avatar
Registered: Feb 2002
Tech Posts: 11,735
Photos: 12
Classifieds Rating: 21
Reputation: You can trust this leader of the site
The ECU doesn't turn on if you don't have power to the ignition switch since it gets a signal from the RUN position as input to activate the MPI relay.

The starter signal comes from the ignition switch and runs through the theft alarm relay if present, then through the starter relay before going to the starter solenoid. If the clutch safety switch isn't depressed or bad the starter relay will block the signal from reaching the starter solenoid.

If you don't have a copy of the FSM it going to be hard for you to fix whatever is wrong.
Visit steve's homepage!  View photos of this member's car 

mark post as helpful recommend reputation points    Reply With Quote
Old 03-19-2011, 03:26 PM Show Printable Version Show Printable Version   Email this Post to a Friend Email this Post      #9 (permalink)
Proven Member
 

compression's Avatar
Registered: Dec 2004
Tech Posts: 1,178
Photos: 12
Classifieds Rating: 3
Reputation: compression is extremely helpful and trustworthycompression is extremely helpful and trustworthy
Send a message via AIM to compression
I'm not sure the frustration is getting the better of me. I fixed the injector issue. Was the plug. Now new issue. Car has fuel and spark but won't start. I'm getting a throttle position circuit malfunction code. I have a 90 but a 91 tps for the s90 throttlebody I'm running. Hooked all the wires up except the one all green wire think it's the ips . Could that cause it not to start?

well i finally got everything back together and ready to run! wouldnt start. compression test came out as follows 1-4 , 0-90-30-30
cylinder one has bent valve i think , with the cams out the valves should be completely sealed, it blows right through the exhaust and out the turbo. and with the cams out the other cylinders sealed perfect fine. so im not sure if theres a problem with the cams or the valves, they are 1mm os titanium and i have comp 101200 cams. i havent removed the head yet so i have no idea whats accually wrong, but thanks for all the help you guys helped me solve the original issue!


____________________________
-Brian, Check out my build thread!

Last edited by compression; 03-19-2011 at 07:50 PM. Reason: Auto-merged with previous post to prevent "bumping" within a 24 hour period Tips on avoiding the auto-merge feature - http://www.dsmtuners.com/forums/faq.php?faq=vb_faq#faq_bumping
View photos of this member's car 

mark post as helpful recommend reputation points    Reply With Quote
Old 03-19-2011, 08:40 PM Show Printable Version Show Printable Version   Email this Post to a Friend Email this Post      #10 (permalink)
Proven Member
 

sniver's Avatar
Registered: Feb 2006
Tech Posts: 674
Classifieds Rating: 2
Reputation: sniver is extremely helpful and trustworthysniver is extremely helpful and trustworthy
Well I can assure you of one thing, its definately a DSM.
Sorry to hear you have additional issue, but it sounds certain the head has to come off. Either a valve is bent, or it has debris caught in a valve.



Sent from my Droid

mark post as helpful recommend reputation points    Reply With Quote
Old 03-20-2011, 07:53 AM Show Printable Version Show Printable Version   Email this Post to a Friend Email this Post      #11 (permalink)
Proven Member
 

compression's Avatar
Registered: Dec 2004
Tech Posts: 1,178
Photos: 12
Classifieds Rating: 3
Reputation: compression is extremely helpful and trustworthycompression is extremely helpful and trustworthy
Send a message via AIM to compression
Dsm or not , everything thus far has been my fault


____________________________
-Brian, Check out my build thread!
View photos of this member's car 

mark post as helpful recommend reputation points    Reply With Quote
Reply

Bookmarks

Thread Tools

 

» Recent DSM Photo
» Current Poll
How many times have you been to the Shootout?
1 - 39.86%
167 Votes
2-5 - 41.77%
175 Votes
6-10 - 10.50%
44 Votes
11-15 - 3.10%
13 Votes
16-20 - 4.77%
20 Votes
Total Votes: 419
You may not vote on this poll.
» Online Users: 785
212 members and 573 guests
Most users ever online was 1,704, 03-17-2008 at 09:11 PM.
DSMtuners Main Sections
DSM Forums
DSM Regional Forums
DSM Builds/Journals
DSM Articles
DSM Tech Guides
DSM Upgrade Paths
DSM Parts Reviews
DSM Vendor Reviews

DSM Classifieds
DSM Parts Guides
DSM Photos
DSM Videos
DSM Timeslips
DSM Dyno Sheets
Shirts & Apparel
DSMtuners Decals

Advertising Info
Our Sponsors
Site Rules
Terms of Service
Privacy Policy
Site FAQ
About Us
Contact Us

© 2014 DSMtuners.com - All Rights Reserved

DSMtuners is not affiliated with Diamond Star Motors. The Mitsubishi Eclipse, Eagle Talon, Plymouth Laser, Mitsubishi Galant VR-4, and associated logos are trademarks of Diamond Star Motors, Mitsubishi Motors, and Chrysler Corporation. No, we do not hand out car sponsorships.

All times are GMT -7. The time now is 02:06 PM.


Vendor Tools vBulletin Plugins by Drive Thru Online, Inc.

Search Engine Optimization by vBSEO 3.6.0