1999 Prerunner 2.7L no start P1300 SOLVED

Hello all,
I was moving my truck around in front of my house today and it stalled. Now it will not restart. So a little information about the truck
-1999 Prerunner
-2.7L 4 cylinder
-Automatic trans
-150K miles

The engine cranks and nearly starts. I pulled a plug and they looked horrible, so I decided to change the plugs, wires and ignition coils. This made no difference. Checked fuel pressure, definitely pressure in the fuel rail. I cleaned the MAF, still no difference.
I borrowed a OBDII reader and shows P1300( Igniter Circuit Malfunction No. 1 ). Could I have purchased a bad coil? or bad wire to ECM?

Thanks

 

P1300 Toyota - Igniter Circuit Malfunction No. 1

Read more: http://engine-codes.com/p1300_toyota.html#ixzz38iuDqfCo


Possible causes
- Ignition Coil No. 1 harness is open or shorted
- Ignition Coil No. 1 circuit poor electrical connection
- Faulty Ignition Coil No. 1
- Faulty Engine Control Module (ECM)
What does this mean?

When is the code detected?
The P1300 code is for the ignition coil No.1 and is set when there is no IGF signal to the ECM during engine operation.
Possible symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
P1300 Toyota Description
Direct Ignition System (DIS) is a 1-cylinder ignition system that ignites one cylinder with one ignition coil. Ignitor is integral to ignition coil. The Engine Control Module (ECM) determines ignition timing and outputs a ignition signal (IGT) for each cylinder. Based on the IGT signals, power transistors in the ignitor cut of current to primary coil in ignition coil, causing ignition coil to fire spark plug. After delivering a command to turn off primary circuit on the IGT wire, ECM monitors IGF circuit to ensure primary switching occurred.



Read more: http://engine-codes.com/p1300_toyota.html#ixzz38iu8694Z

 

First off, P1300 is as you describe but is there any others being thrown like P0120? I had both of these & it ended up being a small brown wire on the harness side of the connection to the igniter

 

P1300 is the only code. I will have to check the connection when I get home tonight. Is the brown wire the ground? or is that to ECM?

 

Pretty sure its the pulse wire that communicates to the ECM, all I know is that it wasn't tight in the connector, I stripped back a little insulation & shoved it back into connection & truck fired up & idled just like it never happened

 

Took a look at it tonight and all wires and connection is tight on both ignition coils. Is there a test I can do voltage or such at the connector or at the ECM?

Is igniter circuit 1 the ignition coil for 1 and 4 or is the one for 2 and 3 ?

 

I just noticed that you're a 4 cyl, but I'm sure theres a test for it, just don't know if proceedure is the same...

The wire that was loose is where I'm pointing my finger, & yes that IS my finger haha...

 

Thanks, yes same looking wire. I found some wiring diagrams and it seem as though the brown wire is a ground. Going to do some testing tomorrow to see if I can track this down....

So tomorrow tests will also include testing the crank sensor and the cam sensor.

 

Tested the Cam and Crank sensor the problem is not there. I am thinking the trouble is either the connector for the coil or the ECM. I have ordered some replacement connectors for the coils will change those and see if it makes any difference.

 

Okay so the problem is the ground wire on the connector to the 1,4 coil pack. So I removed the wire from the connector and ran a new wire to the engine block ground location and it fired right up. Now to make a cleaner and more permanent ground wire...

 

So was it the same brown wire on the very end of connector like mine was??

Anyway, good to hear....

 

I think it is similar as in a ground for the ignitor circuit, just not in the same location. Yours looks like a separate ignitor that is under the airbox on some models. The 4 cylinder has two coil/ignitors that are where the distributor is on older models. I had tried just reworking the connector but it wasn't enough. Working now so all is good.
Thanks for your help!

 

So you just messed with that brown wire connection at the back of the igniter? Seems like I am having this same issue since I have no misfire but trouble starting and p1300 code but nothing seems to fix it. Think i should replace that brown wiring harness or look into the replacing the igniter?