engine wiring diagrams

1992 TOYOTA 4RUNNER
50,000 MILES • 2.0L • 4 CYL • 2WD • AUTOMATIC
Avatar
MAHAR ALI YASIR NOOR
  • MEMBER
  • 1 POST
i have recently installed 3sfe 2.0 liter engine with 0371 Aisin Warner automatic transmission. i need complete wiring diagram with the wiring details of combination meter wiring diagram. Please
Jan 3, 2019 at 10:35 PM
Advertisement
Avatar
STRAILER
  • CERTIFIED EXPERT
  • 53,855 POSTS
Hello,

Here are the engine wiring diagrams with connector view (below) with a guide to help walk you through the testing:

https://www.2carpros.com/articles/how-to-check-wiring

Check out the diagrams (below). Please let us know if you need anything else to get the problem fixed.
Images (Click to enlarge)
Attached Media
Attached Media
Attached Media
Attached Media
Attached Media
Jan 5, 2019 at 11:56 AM
Avatar
ROB40
  • MEMBER
  • 6 POSTS
My done wiring making and not done wiring. Because i still confuse which connector pin color and block junction.
Image (Click to enlarge)
Attached Media
Nov 4, 2019 at 10:12 AM
Advertisement
Avatar
ROB40
  • MEMBER
  • 6 POSTS
Some my wiring many spoils and i need to change new wiring. Can you help me give color code pin connector from and to every junction block back connector? my combination meter also not function good. can you help me? Thank you
Video (Click to enlarge)
Attached Media
Nov 4, 2019 at 10:17 AM
Avatar
ROB40
  • MEMBER
  • 6 POSTS
Before this i found this wiring connector connect to my seat heater. After 3 year ago then i found, i buy my own car with wrong wiring system connections direction. then i found in front of my panel gear shift. there a correct connector with wiring, i try connect then found, when i turn on my overdrive switch then i found got yellow light on at my combination meter..
Nov 4, 2019 at 10:25 AM
Avatar
STRAILER
  • CERTIFIED EXPERT
  • 53,855 POSTS
Anything is working okay but the yellow light? Can I ask which light is it a picture would be great.
Nov 4, 2019 at 12:19 PM
Avatar
FROCKOS
  • MEMBER
  • 3 POSTS
ECU ground has 1.26v on ground circuit
May 26, 2021 at 7:08 PM (Merged)
Avatar
DOCFIXIT
  • CERTIFIED EXPERT
  • 18,828 POSTS
Voltage drop in ground circuit indicates resistence in ground remove clean retest. should be three Brown wires connected to body
May 26, 2021 at 7:08 PM (Merged)
Avatar
FROCKOS
  • MEMBER
  • 3 POSTS
i failed emmissions test...the state machanic looked at it and said: the coolant and oxygen sensor voltages Erratic, check of E1(ground shows 1.26v on ground circuit),ground circuit problem,found high voltage on ground side,vehicle not going into closed loop operation, suggest repairs to ground side of ecu circuit... how can i fix this?
May 26, 2021 at 7:08 PM (Merged)
Avatar
DOCFIXIT
  • CERTIFIED EXPERT
  • 18,828 POSTS
Remove right kick panel look at ECU ground wires should be on that A pillar
May 26, 2021 at 7:08 PM (Merged)
Avatar
FROCKOS
  • MEMBER
  • 3 POSTS
im not seeing where they ground to the 4runner...here is a few pics of the ecu and where im looking...but i dont see anything going to the frame..
Image (Click to enlarge)
Attached Media
May 26, 2021 at 7:08 PM (Merged)
Avatar
DOCFIXIT
  • CERTIFIED EXPERT
  • 18,828 POSTS
There are three connectors on ECU a 15 wire a 22 wire and a 26 wire. I pic you sent one on far right. count over to 13 then to 26 both are grounds. disconne ct Battery then 26 connector use OHM meter measure resistence from each to body ground. any reading other than Zero means unwanted resistence
May 26, 2021 at 7:08 PM (Merged)