Hondata

Hi guys,
Did some searching here but can't find any info on the above. My question is, is the CEL supposed to light up when nos is armed? I'm running a K-pro on a 2002 DC5 Type R. The arming input is wired to E29, the output is E21, and there's a relay in there. The nos kit is a Zex, which uses a separate wire that goes to the TPS. That's been wired in as well. When I arm the switch, it shows up in the K-manager as nos-1=on , an the CEL lights up. If I turn off the arm switch, the CEL goes off as well.

Any ideas? Thanks much.

Anytime you use the SCS input it will show the check engine light as that is how the vehicle is wired.

Spunkster wrote:Anytime you use the SCS input it will show the check engine light as that is how the vehicle is wired.

Thanks man. Are there any repercussions to using this input? Meaning if it causes the CEL to light up, will it have any adverse effects?

It should not cause any other side effects.

So I've run into another problem. Apparently the JDM PRC ecu does not come with the E20 or E21 pins. I removed the secondary o2 sensor pin and put it into the E21 slot and set the parameters for that on the k-manager. However it does not seem to be sending a signal to trigger the solenoid. All the wiring is correct etc. Using a multimeter we were unable to get a signal on the output pin as well. Swapped it to the E20 pin and same result.

Anyone got any ideas? As the PRC ecu does not come with either pins, does that mean it doesn't have the circuitry for those?

Thanks.

The PRC does not have the circuitry inside to use all the inputs for nitrous controls. You will have to use one of the other inputs.

Inputs? Currently I'm using the E29 as input (arm switch). It's the output that I'm having a problem with, which is E20 or E21. Is it that you are referring to?

Sorry I should have said inputs/outputs. You will have to use E18 or B6 for the output. There is no VTEC pressure for the input on a PRC.

Ok thanks a lot. Guessing you can't actually have your a/c functional if you're going to use the E18 output?

That is correct.

Just an update.

We bypassed the fan from the ecu, and used the temp sensor on the radiator to control the fans. Just had to use a relay to turn on the a/c fans after. This left the B6 wire free to use as the output, which got the nos activating and deactivating via the K-pro as it should.

So problem solved, if anyone else with a JDM K20 has this problem.