time to stop hiding, this is an emergency situation. I am working on trying to get my ZC running, and i was getting a code 15 for a faulty ignition output signal. i replaced the dizzy with one from a working car. no dice, same shtuff. so i tested both distributors by running a ground to the trigger wire(one of the white wires) and voila, i get spark. on both dizzy's. so here i am, i purchased a new pm6 ecu as this was the only option i could think of, and at first i get no codes, so i try to crank it, and it seems like one or two cylinders tried to fire, but then they all quit. now im getting another code 15. son of a bitch. im going to try switching the white wires, but if that doesnt work then im boned. i ABSOLUTELY NEED this car to be running before May 7. i need it to go to school, and that is quite important to me...

 

Have you checked the ignition output signal wire form the ECU to the igniter? Have you tried running a temporary wire in it's place?

 

1. unplug the wiring clip.
2. turn on the igntion.
3.measure the voltage of the black/yellow wire which is + and a body ground...

if no voltage, fix the open in the black/yellow wire

if there is voltage you need to get a test harness and measure the voltage individually between B15(+) B17(+) and A18(-) on the ecu...

if there is voltage replace the ecu

if not, replace the ignitor, or the wires b15 or b17 between the distributor and the ecu

 

is the test harness a honda tool? or is it just another harness from the junkyard, or do i make it? im just not sure how i can still have the problem when both dizzy's have been tested to work, and a new, brand new from honda, ecu wont work. i have tested the black/yellow wire, and have continuity through the harness to the ecu plugs, but maybe im supposed to measure the actual ecu pins?

 

hey i got a ?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Sobe_Death &raquo;</TD></TR><TR><TD CLASS="quote">is the test harness a honda tool? or is it just another harness from the junkyard, or do i make it? im just not sure how i can still have the problem when both dizzy's have been tested to work, and a new, brand new from honda, ecu wont work. i have tested the black/yellow wire, and have continuity through the harness to the ecu plugs, but maybe im supposed to measure the actual ecu pins?</TD></TR></TABLE>I think the harness you want is like a break-out box. You can do without it by using skinny probes for your multi-meter. Just go in alongside the wire, where the harness plugs into the ECU. The harness just makes it easier to reach, and you don't have to go crazy trying to figure out which wire is B15 or A18...

 

ok thanks jimblake, i figured i could just do that anyway.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by lilthomie &raquo;</TD></TR><TR><TD CLASS="quote">hey i got a ?
</TD></TR></TABLE>

yes??

 

sounds like a problem with the wires,is everything hooked up correctly?do you have good ground connections?all your fuses good?what is that code for?did you try reseting the ecu?..you need fuel,air,spark at the right time.is your timing correct?

 

When a code 15 is set, that means the ECU is not getting a voltage reading from the igniter. Code 15 is almost always a failed igniter. The igniter is provided voltage from the same circuit that powers up the coil. Make sure this power source is OK. If you connect all the wires to the igniter except the trigger wire to the ECU, you should have 10-11 volts on the igniter pin that you pulled the trigger wire off of. While checking this open pin for voltage, try wiggling all the other wires slightly and see if your voltage fluctuates indicating a poor circuit. If you have good voltage on this pin, check the wiring going to the ECU. This trigger wire typically splits up into 2 wires that go to 2 separate pins at the ECU.....Next time include year/model/engine info...... 3gdude

 

its a ZC engine, obd0, using a 89 si harness. i am reading 10.45 volts at the ignitor pin. no voltage fluctuation when i wiggle the wires. in addition, i am now getting a code 4 for a crank angle sensor, and the Honda Factory service manual doesn't show anywhere how to check the sensor. it just acknowledges that it is there. i have another dizzy, that is in working condition, and i still get the same code for the code 15, i have not, however, tried it after i got the code 4.