2000 Toyota Corolla, stalling right after starting up, no security light

Tiny
J.STIEG
  • 2000 TOYOTA COROLLA
  • 170,000 MILES

Having a stalling problem on a 00 corolla. I have checked condition out and confirmed that the fuel injectors are cutting out after the first few seconds. I don't see any security lights. How do I further diagnose?
recently been rebuilt.

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Friday, February 17th, 2012 AT 2:50 PM

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Tiny
WRENCHTECH
  • EXPERT
  • 20,785 POSTS

It's not a security problem. The headlights and horn would be flashing if it was. You could have a shorted injector. I would disconnect all of them, and see if you can keep it running with carb cleaner while monitoring a noid light on the injector plug.

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Friday, February 17th, 2012 AT 3:13 PM
Tiny
J.STIEG
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Ok I will check it out with noid light.

Question: would the computer shut down ground pulse to all injectors if it sensed more draw/short on any given injector?

I will check coil resistance on all injectors and compare.

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Friday, February 17th, 2012 AT 3:58 PM
Tiny
J.STIEG
  • MEMBER

With all injectors unplugged I cranked the engine, and the ground pulse was only there for 2 seconds. After that there was no activity.

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Friday, February 17th, 2012 AT 4:50 PM
Tiny
WRENCHTECH
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Could be a bad computer but all the wiring has to be tested first.

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Friday, February 17th, 2012 AT 5:00 PM
Tiny
J.STIEG
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I agree, Where should we start?
Should I test cam sensor circuits first, or what would you recommend.
Wiring diagrams go a long way and really help. Thanks

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Saturday, February 18th, 2012 AT 4:30 AM
Tiny
J.STIEG
  • MEMBER

Can you also get me a wiring diagram for ignition coil (COP) #4, there are four wires on it, 2000 corolla 2.8l

thanks

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Saturday, February 18th, 2012 AT 6:35 PM
Tiny
RIVERMIKERAT
  • MEMBER

2.8liter or 1.8 liter? Our reference shows only a 1.8 liter engine. Manual or automatic?

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Sunday, February 19th, 2012 AT 10:20 PM
Tiny
J.STIEG
  • MEMBER

I meant to say 1.8l, and it is a manual drivetrain.
I need to check wiring on the #4 coil, It got four wires going to it. Thanks

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Tuesday, February 21st, 2012 AT 4:59 PM
Tiny
J.STIEG
  • MEMBER

Is there any thing with the coil circuits that would keep the injectors from firing.

Trying to get the injectors firing again.

Injector fire for the first 2-3 seconds then shut off.

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Tuesday, February 21st, 2012 AT 10:07 PM
Tiny
RIVERMIKERAT
  • MEMBER

That sounds like an ASD, automatic shutdown relay.

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Tuesday, February 21st, 2012 AT 10:13 PM
Tiny
WRENCHTECH
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[quote]That sounds like an ASD, automatic shutdown relay.[/Quote]

If it was a Chrysler product maybe but Toyota doesn't have one.

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Tuesday, February 21st, 2012 AT 10:42 PM
Tiny
J.STIEG
  • MEMBER

I will check on ASD, but that would cut spark too wouldn't it.
I have good spark.

Code #P1315 comes back right after it is erased. Not shure if thats injector related or not.(Imputs affecting computer possibly?).

Here is another note: when I turn the ignition on and start it will run for two seconds.
After it stalls and I attempt to restart it, it wont start up unless I turn ignition off and turn it on again, then that achieves another two seconds of running before injectors cut out again.

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Tuesday, February 21st, 2012 AT 11:05 PM
Tiny
RIVERMIKERAT
  • MEMBER

P1315-Ignitor #4 circuit.

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Tuesday, February 21st, 2012 AT 11:14 PM
Tiny
J.STIEG
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Why is there 4 wires on all the coils?

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Tuesday, February 21st, 2012 AT 11:54 PM
Tiny
WRENCHTECH
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Because it's transistorized. It has constant power and ground and 2 wires to the ignition module. I gave you the wiring diagram so you could see that.

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Wednesday, February 22nd, 2012 AT 12:15 AM
Tiny
J.STIEG
  • MEMBER

I think the fuel shut off problem is occurring because of a bad IGF signal coming from the coil going to the computer.

Spark Confimation IGF
Once a spark event takes place, an ignition confirmation signal called IGF is generated by the igniter and sent to the ECU. The IGF signal tells the ECU that a spark event has actually occured. In the event of an ignition falt, after approximately eight to eleven IGT signals are sent to the igniter without receiving an IGF confirmation, the ECU will enter a fail safe mode, shutting down the injectors to prevent potential catalyst overheating.

So I guess I need to test the IGF circuit.

Can you get me pin numbering on the ECU connector. Thanks

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Wednesday, February 22nd, 2012 AT 1:31 AM
Tiny
J.STIEG
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I think I'v got em, just have a hard time with the charts but I see it.

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Wednesday, February 22nd, 2012 AT 1:36 AM
Tiny
J.STIEG
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Ok here is where I'm at, I go to the circuit I suspect which is the "IGF circuit" and do a continuity check.

Here is what I find: checking at the ECU E4 pin #3 l/y. TO. Ltblue/yel at any given coil, and there is no continuity at all, Good news I think, well we will see.

There is good continuity from coil to coil.
I suspect open between IGF junction and ECM.
I wonder why its throwing code for coil #4 and not all.
Going to open up the harness a little more and do some more testing tomorrow, Keep your fingers crossed.

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Wednesday, February 22nd, 2012 AT 4:26 AM
Tiny
RIVERMIKERAT
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Ok. Let us know what you find out.

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Wednesday, February 22nd, 2012 AT 5:57 AM
Tiny
J.STIEG
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Good news the problem Is solved. I was wrong about that one IGF circuit between the ECU and coil, it had good continuity.

The problem was I one of the coils.
I kept changing the coils around and codes followed the coil.
I bought a used coil for $35 and car runs, and stays running.

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Thursday, February 23rd, 2012 AT 12:47 AM

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