For those of us who've had our cars down for months and then re-installed the battery, does anyone have a link to the procedure for resurrecting the EPS? My car has an AEM, so the Honda Diagnostic tool won't recognize the car (no surprise there; understandable).

But since I've driven my car with the AEM ECU for years and the dash functions normally (with Modifry's help on temp gauge), so I'm figuring the EPS might be on a different subsystem that could be "pinged" via shorting the right pins on the diag connector. Are there certain pins we can "short" on the diag tool?

Tried searching this forum and a few others - references to an '03 gallery link that didn't work.

Insights welcomed. FWIW we just got the car running last night after 7 months (full Laskey 9:1 build, Stage 3 ported head, Full-race header, Precision 600 Intercooler, etc.). Did my heart good to hear that little beastie fire up on the first push of the Start Engine button.

Thanks,
Stanford

 

You can drive the car around the block for a few times and after a few restart the eps will relearn itself.

 

Thanks -- tried that & no luck.

Did the procedure on shorting the diag connector's # 4 and # 9 ports (45 deg turn wheel, ignition on, EPS light goes out, release, EPS light on, 45 turn wheel, EPS light out, release, 2 flashes, then 3 flashes). After doing these steps, the EPS relay clicked for ~ 30 seconds over in the passenger (US) side fender area, then stopped clicking. Not sure if that means I have insufficient ground or a loose connection somewhere. Ideas welcomed.

The car's really coming together except for this little snag. Installed the 3 bar MAP and re-did the breakpoints / fuel map / ignition curve no problem. Can't wait to get this thing back out on the road.

 

I have the same problem. Let me know if you find anything. I even tried a reset using the stock ECU and an OBDII scanner. No luck. I *HIGHLY* suspect a ground.

 

I HAVE THE SAME DAMN PROBLEM!!!!!!!! car has not had a battery in it for months now i got the turob setup and ems all running good and the ep light is on and no power steering any help i miss my EPs

 

Shorting the 4 and 9 pins in the OBD2 harness provided a DTC code of 1 for mine (stuck relay). I tried resetting it but it comes back DTC1. I'm going to try replacing my EPS unit with a different one I bought from someone used & see if that gets me anywhere. I'll post to this thread if it works.

What DTC codes are you guys getting?

Thanks,
Stanford

 

whats the step by step to resetting the eps ? is there any grounds coming from the actual eps module? and are the harness that plug into so similar that i could have plugged the wrong ones in?

ps i relocated the eps module inside my fender and in the process i disconnected the module but i did not extend any wires for the module...

any help?

 

This is odd........I unplug my battery every winter while it's stored for about 5 months and I haven't had a problem like this yet. I also have the AEM. What is causing this?

 

I have the same issue. The harnesses are simliar on the eps box I tried driving my car around a few times still no luck. I tried pulling fuses obdII scanned I everything. I need my eps

 

You can communicate with the EPS on a AEM car but you need another stock S2k. You boot the HDS on the stock car then hot swap the tester to the AEM car.

You'll need a Honda tech that understands this concept and has a HDS to do this.

There are also 2 connectors on the EPS unit that can be plugged in backwards and cause no power assist.