I guess it will come down to the cps connections then....
It could be 7x, i did not take off the harmonic balancer to count it.
The connector of the CPS has 3 wires.
As I found on the internet, A should be 12v, B is signal and C would be ground.
The connector on the ICM has also 3 connections, but only 2 are used.
In the WD I posted, it says 2 for the signal, the third would be the shield....
grtz, D
Wait... are you trying to use the 24x crank sensor behind the harmonic balancer? If you are that's the wrong crank sensor. That's part of the "quick fire system" and RPM reference for the ECM, but won't work with the DIS system. (I kinda forgot about this one lol)
You want the CPS that's installed in the block about mid way on the passenger side.
The man who says something is impossible, is usually interrupted by the man doing it.
I looked at the engine block, and the bunch of wires that came with the block, and indeed, it makes a lot more sense.....
This sensor has only 2 wires, and they have the same color....
Did not know there are 2 sensors.....
I will try tomorrow to connect it properly, and then try again...
Today, I got the ignition working.
The engine runs quite good, but the ECM throws the code 42...
I also have no tach.
I do have a tach signal in tunerpro....
Still work in progress..
grtz, D
Code 42 would mean that the tan/black wire is not connected, or not connected to the right circuit.
The man who says something is impossible, is usually interrupted by the man doing it.
Did some troubleshooting today......
This is what i all did:
checked all the connections, and they are like they should be on the wiring diagram above...
Measured the bypass wire between the the DIS and the ECM => it is not interrupted
Checked the advance with the strobo => it is 4° at idle, and goes to 12° at about 3000rpm.
It does not make a change if the bypass wire is disconnected.
(that 4° is a indication, since there was no reference point on the 3.4, and I fabricated one myself)
Swapped a ICM with an ICM I have in stock => no difference
Swapped a ECM => no difference
So the problem still exist: No tach and throws code 42
Last edited by D Max; 10-22-2017 at 02:32 PM.
for the moment, i came to the following conclusions:
the ECM gets a reference signal from the ICM (=> fuel injection works + tach signal in Tunerpro)
The 4 wires between the ICM and the ECM have a near zero resistance.
The ECM does not put 5v on the bypass, but sets code 42 instead.
Try to find an oscilloscope, to check the signal on the white wire (est)
someone with any ideas?
grtz, D
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