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If everything checked out on the ignitor input test described in the SM and you can confirm that the injectors are firing (noid lights) things are not looking so good for the ignitor. I would remove and clean the ignitor ground lug connection just to rule it out because multimeter tests are poor a confirming the condition of a ground connection. I would also make sure that the bolted connections for the ignitor module are clean and good. It is not clear whether the module also uses the mounting bolts as part of the ground path.The ignitor input test does not check inputs signals from the ECU (the pin plug) because most people (including dealerships) don't have the required tools to do that. Those six pins are the six trigger outputs from the ECU for the coil ignitor transistors. Rodent damage on that part of the harness could kill the ignition; but, the rodent would have had to chew through all the wires to completely kill the ignition system. If they only chewed 2-3 wires the engine should still be able to start. Rather than just visual inspection, I would be inclined to do an end to end continuity test between the plug on the ECU body and the ignitor 6 pin plug.If the wiring between the ECU and the ignitor checks out as good, replacement of the ignitor might be the next step. The NSX shares the same module with the 91-95 Legend, 96-04 RL and the 96-98 TL and there may be others. Short answer you may be able to scrounge a module cheap at a pick and pull. Ebay sellers list them for for around $50-70 used. Aliexpress lists them new for around $70.The NSX ignitor is like a fly trapped in amber. The $400 - $500 OEM pricing is a left over from a previous century as its design is based upon technology available in the late '80s. These days, you can purchase dedicated ignition drivers on a chip from ONsemi for about $3 - $5 each so a homemade equivalent can probably be fabricated for less than $50 (might not look OEM). The Chinese reproductions on Alieexpress might be just fine.
If everything checked out on the ignitor input test described in the SM and you can confirm that the injectors are firing (noid lights) things are not looking so good for the ignitor. I would remove and clean the ignitor ground lug connection just to rule it out because multimeter tests are poor a confirming the condition of a ground connection. I would also make sure that the bolted connections for the ignitor module are clean and good. It is not clear whether the module also uses the mounting bolts as part of the ground path.
The ignitor input test does not check inputs signals from the ECU (the pin plug) because most people (including dealerships) don't have the required tools to do that. Those six pins are the six trigger outputs from the ECU for the coil ignitor transistors. Rodent damage on that part of the harness could kill the ignition; but, the rodent would have had to chew through all the wires to completely kill the ignition system. If they only chewed 2-3 wires the engine should still be able to start. Rather than just visual inspection, I would be inclined to do an end to end continuity test between the plug on the ECU body and the ignitor 6 pin plug.
If the wiring between the ECU and the ignitor checks out as good, replacement of the ignitor might be the next step. The NSX shares the same module with the 91-95 Legend, 96-04 RL and the 96-98 TL and there may be others. Short answer you may be able to scrounge a module cheap at a pick and pull. Ebay sellers list them for for around $50-70 used. Aliexpress lists them new for around $70.
The NSX ignitor is like a fly trapped in amber. The $400 - $500 OEM pricing is a left over from a previous century as its design is based upon technology available in the late '80s. These days, you can purchase dedicated ignition drivers on a chip from ONsemi for about $3 - $5 each so a homemade equivalent can probably be fabricated for less than $50 (might not look OEM). The Chinese reproductions on Alieexpress might be just fine.
