3.4 Swaps The 3.4 V6 Toyota engine

ECM/MAF wiring

Thread Tools
 
Search this Thread
 
Old 05-04-2012, 03:44 PM
  #1  
Registered User
Thread Starter
iTrader: (1)
 
bend's Avatar
 
Join Date: Jun 2009
Location: NW Arkansas
Posts: 287
Received 5 Likes on 4 Posts
ECM/MAF wiring

A little background info. I rewired my 96 ecm from auto to manual. I got the swap running but I am getting the p0100 code. So i checked to make sure I was getting 5v at pin 1. I am not. I am getting 5v at pin 2 or 3 or 4. i dont remember which one. Would be an indicator that i have the maf pins mixed up at the ecm?
Old 05-04-2012, 05:11 PM
  #2  
Registered User
 
sacredmagic's Avatar
 
Join Date: Apr 2009
Location: Vegas baby
Posts: 57
Likes: 0
Received 0 Likes on 0 Posts
The signal you need 5v on is VC not sure where it is on the connector pin 1 or 4 but definately not 2 or 3
Old 05-04-2012, 05:17 PM
  #3  
Registered User
Thread Starter
iTrader: (1)
 
bend's Avatar
 
Join Date: Jun 2009
Location: NW Arkansas
Posts: 287
Received 5 Likes on 4 Posts
Originally Posted by sacredmagic
The signal you need 5v on is VC not sure where it is on the connector pin 1 or 4 but definately not 2 or 3
https://docs.google.com/open?id=0B49...RGU3azVwMDBjZw
There is a snap shot of my ewd. Would +b need the 5v?
Old 05-04-2012, 07:44 PM
  #4  
Registered User
 
dntsdad's Avatar
 
Join Date: Jan 2009
Location: Fresno, Ca.
Posts: 1,908
Likes: 0
Received 5 Likes on 5 Posts
B+ (W-L) is the 12v lead from the EFI relay.

The document shows the wiring configuration for the pins. Just match it to your ECM. I am not sure what ECM your are running or I would help you out.

It says that
1= B+
2= F8 (auto), B2 (manual)
3= F7 (auto), B10 (manual)
4= ground
5=F18 (auto), B8(manual)

use a meter and check for continuity for those pins on your MAF to he pin on your ECM
Old 05-05-2012, 12:22 PM
  #5  
Registered User
Thread Starter
iTrader: (1)
 
bend's Avatar
 
Join Date: Jun 2009
Location: NW Arkansas
Posts: 287
Received 5 Likes on 4 Posts
Okay I'm about to test for continuity. I bought a new maf and that didnt help. I'm thinking I have it wired incorrectly. I am alos getting a p0505 code which is the IAC. I havent hooked up my 02 sensors yet and it is not throwing codes for those.
Old 05-05-2012, 05:28 PM
  #6  
Registered User
iTrader: (1)
 
anthony1's Avatar
 
Join Date: Oct 2003
Location: torrance, CA.
Posts: 1,561
Received 1 Like on 1 Post
I had that issue too but it turned out to be the C plug itself. It was moving around enough to kill the engine and throw the MAF code. Sometime it would throw the Coolant temp as well. I end up just taping some elec. tape to the side of the connector so it would be more snug. NO more problems.
Old 05-06-2012, 10:37 AM
  #7  
Registered User
Thread Starter
iTrader: (1)
 
bend's Avatar
 
Join Date: Jun 2009
Location: NW Arkansas
Posts: 287
Received 5 Likes on 4 Posts
Okay I will try jiggling the plugs anthony. I have continuity in my wires and they are wired correctly. I'm thinking it is my iacv. I'm going to clean that tomorrow.
Old 05-06-2012, 11:31 AM
  #8  
Registered User
iTrader: (1)
 
anthony1's Avatar
 
Join Date: Oct 2003
Location: torrance, CA.
Posts: 1,561
Received 1 Like on 1 Post
Clear the code first...or disconnect the 12v for a little bit.
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
sanctfy
All Other Toyota Swaps
6
09-15-2015 02:52 PM
ToyoToler
General Electrical & Lighting Related Topics
8
08-08-2015 08:43 AM
Daneums
Offroad Tech
0
07-28-2015 11:57 AM
TDonkey
93-98 T100s
0
07-26-2015 10:14 AM
80Truck
Pre 84 Trucks
8
07-24-2015 03:12 PM



Quick Reply: ECM/MAF wiring



All times are GMT -8. The time now is 10:11 PM.