no power at coil packs 1998 3.4 v6

wonder if anyone else has had this issue checked all known fuses no cel changed ignition control module didn't change anything only has 79,000 miles original harness never cut into thanks just at a loss

 

Make sure your AM2 fuse (30A) is good, if it is then you need to go to your ignition switch and check for power in on Pin 7 (White/Red) and power out on Pin 6 (Black/Red) with it in the Run position.

 

Thanks I will try that someone said possibly ecm would you know if there would be anything to that I hooked my snap on code reader to it no codes fuel pump working as it should checked timing belt looked good no codes at all wiring harness are still in original loom I checked for obvious damage nothing didn't know if anyone had a test for ecm will be able to check ignition wires this evening

 

PCM does not control power to the coils, if you look at the diagram power comes from the ignition switch via the AM2 fuse.

 

Thanks wasnt sure

 

checked am2 its good also check white red 11.92 and black and red 11.93 volts still no power at coil packs any idea?

 

Where did you check the White/Red wire at when you got 11.92v?

 

at bottom of key switch

 

If you can access one of the injectors see if you have power there on the Back/Red wire, that will narrow down where the wire is broken.

 

For OP sake, I hope it's not the I9 splice. ( I don't have splice location data)
We shale see when he gets back to us with an answer to your question.

 

11.6 at injector

 

I'd shoot for the IK2 connector. Check pin 8 for power. (Black/Red wire)
If you have power at IK2, then we need to inspect the splice point.
If no power to IK2, go to IF1 connector and check for power at pin 17

 

thanks guys had call it quits getting bad storm I will check it sunday and let you know thanks for help

 

No problem.
I think you'll figure out where the power is missing.
Keep us updated. Should you have any more questions, feel free to ask.
We'll help you the best we can.

 

We have to have power at IK2 Pin 8 or we wouldn't have power to the injectors.

The problem has to be between Splice I9 and the coils, gona have to follow the harness and look for green crusties or chewed wires.

OP you checked all the coils for power correct?

 

Well, I hate it for OP.
Fooling with splice points can be a hassel.
And that tape Toyota uses is nothing but a mess.

 

I'd suspect rodents or corrosion before a bad splice, the glue they typically use in those splices is no joke.

 

guy have voltage at both connections

 

is there any sensor that could cause us not have power at the coil packs

 

No, it 100% has to be a broken wire if you have power at the Black/Red wire at the injectors but not on the Black/Red wire at the coils.