How to Check Error Code (Engine Light On)

[nsxtypet]

I really need your help to direct me of how to check engine error code. The engine light came on a few days ago after a few car washes.

I have taken my car to car wash place where it is hand cleaning without brushes. However, still need to go through the machine for high pressure water cleaning and drying.

After the car wash, the feeling is a bit strange when accelerate. Felt like there is delay in acceleration when gas paddle is pressed.

Worry that the water might get into the coil and caused the problem.

Should I check what error code first before starting the big job of removing the coils and plugs?

Thanks for your help first!!!

 

[Briank]

http://www.nsxprime.com/wiki/Trouble_Codes

 

[nsxtypet]

Thank you so much Briank! Will try to find out the code first!!!

 

[nsxtypet]

My NSX Engine Light came on last week (after four times car washes) and checked the trouble code. There is no long or short blink at all. Assuming it is MIL CODE 0 (ECM Internal Circuit Failure A / B).

I had the engine overhauled by one specialist recently and have all the old parts replaced by new.

After the second time of car wash by the brush free car wash machine, already felt the car acceleration is not responding quickly. If I leave it and not driving the car for a few days, there is not a problem anymore (slow acceleration respond only happen immediately after car wash).

Today, asked my mechanic to remove the coil engine covers and found there is only one seal at the upper side for both covers. Took the coils out and found the top are rusted. Guess this is the problem of engine light.

Can any kind hearted owners help to confirm how many seals are needed per cover? Are there two or one?

Can anyone help to give instruction of how to check which coil is malfunctioned due to water leak?

Many thks!!!

 

[Old Guy]

The method for checking the coils is described in the service manual. An on-line version of the manual is located here http://nsxprime.com/wiki/Service_manuals. The following thread discusses testing of the coil and 'issues' with the testing method as described in the manual http://www.nsxprime.com/forum/showthread.php?t=105734.

The test described in the service manual is a DC resistance test. It is useful for detecting an open circuit or bad connection within the coil but won't necessarily identify a problem with a high voltage insulation failure in the coil (where the high voltage generated by the coil shorts to ground before causing the spark plug to fire. A good automotive shop with equipment for testing ignition systems should be able to do an insulation test on a coil. I also recall seeing a thread within Prime where an owner pulled the coil out of the head (leaving it connected to the wiring harness) and cranked the engine while holding the long tube portion of the coil against the head. He described flashover from the external part of the coil to the head associated with failure of the coil assembly insulation. His thread provided a better description of his test procedure and included some good photographs. If you search on Prime you may be able to find it.

 

[nsxtypet]

The method for checking the coils is described in the service manual. An on-line version of the manual is located here http://nsxprime.com/wiki/Service_manuals. The following thread discusses testing of the coil and 'issues' with the testing method as described in the manual http://www.nsxprime.com/forum/showthread.php?t=105734.

The test described in the service manual is a DC resistance test. It is useful for detecting an open circuit or bad connection within the coil but won't necessarily identify a problem with a high voltage insulation failure in the coil (where the high voltage generated by the coil shorts to ground before causing the spark plug to fire. A good automotive shop with equipment for testing ignition systems should be able to do an insulation test on a coil. I also recall seeing a thread within Prime where an owner pulled the coil out of the head (leaving it connected to the wiring harness) and cranked the engine while holding the long tube portion of the coil against the head. He described flashover from the external part of the coil to the head associated with failure of the coil assembly insulation. His thread provided a better description of his test procedure and included some good photographs. If you search on Prime you may be able to find it.

Thanks a lot for the valuable information!!!