Electrical Gremlin On My Back! HELP!!

Powers:

E6 Pin 12 (Blue/Yellow) (Crank)
E8 Pin 1 (Black) (Run) (from EFI Relay (PCM Controlled))
E8 Pin 2 (Black) (Run) (from EFI Relay (PCM Controlled))
E8 Pin 3 (Blue) (All Times)
E8 Pin 7 (Grey) (All Times)
E8 Pin 9 (Black/Orange) (Run)


Grounds:

E4 Pin 6 (Brown)
E4 Pin 7 (Brown)
E5 Pin 3 (White/Black)
E5 Pin 4 (White/Black)
E5 Pin 6 (White/Black)
E5 Pin 7 (White/Black)
E6 Pin 1 (Brown)

 

You all are great helping the OP to this extent. This site has some first class people.
Best of luck to you all.

 

I agree they are awesome and greatly appreciated.
I just got up fellas going out to check the pink #4 on NSS and EFI 2 fuse now.
Right?

 

Yeah, start there.

Then move on to the ECM checks Dm93 posted if needed.
Let us know what you fin on the NSS and EFI No2 fuse.

 

No power on NSS pink #4 wire
No power on EFI #2 fuse key on

 

@TnShooter
@Dm93

 

Do your power and ground checks at the PCM, I don't expect we'll see power on E8 Pins 1 & 2 but we need to see if we have power and ground on the rest.

 

As expected.
The ECM will need to be checked for powers and grounds, as @Dm93 said.

 

I'll jump back on in a bit and see how it goes.
I just hit a poison ivy patch with the weedeater and I got to get home and get washed off.
Stuff makes me itch.....

 

E6 Pin 12 (Blue/Yellow) (Crank) - POWER CONFIRMED

E8 Pin 1 (Black) (Run) (from EFI Relay (PCM Controlled)) NO POWER

E8 Pin 2 (Black) (Run) (from EFI Relay (PCM Controlled)) NO POWER

E8 Pin 3 (Blue) (All Times)
NO POWER

E8 Pin 7 (Grey) (All Times)
POWER CONFIRMED

E8 Pin 9 (Black/Orange) (Run)
POWER CONFIRMED

@Dm93
@TnShooter

Onto grounds right now

 

E4 Pin 6 (Brown)
NO GROUND

E4 Pin 7 (Brown)
NO GROUND

E5 Pin 3 (White/Black)
GOOD GROUND

E5 Pin 4 (White/Black)
GOOD GROUND

E5 Pin 6 (White/Black)
GOOD GROUND

E5 Pin 7 (White/Black)
GOOD GROUND

E6 Pin 1 (Brown)
NO GROUND

@Dm93
@TnShooter

 

Ran overlay grounds to known good ground source from where I had no ground

 

Lets get those grounds at the ECM fixed.

E4 - Pins 6 & 7


Let me see if I can find the ground point location for EE.
Back in a bit.

 

Make sure this ground is connected on the engine.

 

For those following along. And what to know why were are checking the EE ground location.
It's because all the grounds OP is missing on the ECM are tied to the EE ground.

 

We also need to find connector IC4 and see what's going on with our power there, mabe it's not plugged in all the way or a pin is bent.

 

Working on it.....

Chilton strikes again.
No connector locations. Just pinouts.

Might need you for the location.
Unless I find it before you can get to it.

 

I'm kind of hoping that the ground issue fixes the power issue.
As the ECM is the SUPPLY power. Maybe if we get the ECM online, it will supply power.

 

It's all in the file I posted in Post #52

E8 Pin 3 is dead, that power comes from the EFI Fuse (Hot at all times) through Connector IC4 Pin C4 (Blue)

 

Good thing you caught that.
My eyes were seeing it E8- Pin 8...
And it too goes through IC4.

It is in fact E8- Pin 3.
I just need to do better at reading.....