No spark, tearing down the wiring harness
1989 DX HB that has been MPFI'd and has a DOHC ZC in it. No spark so I'm tearing apart the wiring harness loom trying to find a problem, starting with the cam angle sensor.
My main question is, does anyone have a pinout diagrams that say where each wire that goes to the ECU ends up?
First off, there were two wires that weren't connected to the CAS in any way, and that weren't connected to the clip near the fuse box (in engine compartment).
A - CAS 'cable' housing blue/yellow blue/green wires
B - yellow/green wire connected to nothing
C - blue wire connected to nothing and black wire spliced to insulation wire that goes nowhere

There was a wire that was spliced with the insulation of the CAS wires (blue/yellow; blue/green) that eventually spliced with a wire that went nowhere on one end and to a yellow/green wire in the plug.
A - blue/green wire
B - blue/yellow wire
C - wire that goes nowhere
D - splice of insulation wire, wire that goes nowhere and yellow/green wire to the plug

And just for those who are wondering why I'm checking the wiring harness is because I've checked <u>everything</u> I could think of that would cause no spark. Grounds, distributor cap and rotor, spark plug wires, coil, ignitor, I've swapped computers between the PM7 and a known good PM6. Computer is throwing no codes, and no check engine light..... I've also recently replaced the entire distributor and cam angle sensor that were known good from a black top D16A1 Integra, and still nothing...
TIA!!
My main question is, does anyone have a pinout diagrams that say where each wire that goes to the ECU ends up?
First off, there were two wires that weren't connected to the CAS in any way, and that weren't connected to the clip near the fuse box (in engine compartment).
A - CAS 'cable' housing blue/yellow blue/green wires
B - yellow/green wire connected to nothing
C - blue wire connected to nothing and black wire spliced to insulation wire that goes nowhere
There was a wire that was spliced with the insulation of the CAS wires (blue/yellow; blue/green) that eventually spliced with a wire that went nowhere on one end and to a yellow/green wire in the plug.
A - blue/green wire
B - blue/yellow wire
C - wire that goes nowhere
D - splice of insulation wire, wire that goes nowhere and yellow/green wire to the plug
And just for those who are wondering why I'm checking the wiring harness is because I've checked <u>everything</u> I could think of that would cause no spark. Grounds, distributor cap and rotor, spark plug wires, coil, ignitor, I've swapped computers between the PM7 and a known good PM6. Computer is throwing no codes, and no check engine light..... I've also recently replaced the entire distributor and cam angle sensor that were known good from a black top D16A1 Integra, and still nothing...
TIA!!
my bad last post a pm......it's either the way the cas is wired or it could also be the ignition module in the dizzy does it get any spark at all or is it just missing at the wires?
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nocturnal EG
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Nov 3, 2006 08:04 AM



