TCS light stays on
- Thread starter garyn
- Start date
Check TCS sections 19-74 through 19-138 in the on-line service manual. Everything you ever wanted to know about the TCS is there.On page 19-84, it states that a 5-1 code is related to " abnormal fail-safe relay, throttle actuator, or throttle body" and it spells out the related components. Let us know what you find the problem to be. Good luck.
The TCS light went back on and it stays on after start-up. I also noticed the motor bogging, after first slowing down and then accelerating, like in a slow turn in first gear. I'm not sure if it is related to the throttle body(problem code 5-1) or wheel sensor? Does anyone have any ideas? Thank you in advance.
The "bogging" sounds like the TCS is activating properly. The most common reason for TCS problems is using tire sizes other than those most appropriate for the NSX and its TCS:
15"/16" wheels with 205/50-15 and 225/50-16
16"/17" wheels with 215/45-16 or 205/45-16 and 245/40-17
17"/17" wheels with 215/40-17 and 255/40-17
17"/18" wheels with 215/40-17 and 255/35-18 or 265/35-18
What are your tire sizes?
15"/16" wheels with 205/50-15 and 225/50-16
16"/17" wheels with 215/45-16 or 205/45-16 and 245/40-17
17"/17" wheels with 215/40-17 and 255/40-17
17"/18" wheels with 215/40-17 and 255/35-18 or 265/35-18
What are your tire sizes?
That rules out that possibility; those sizes should not cause TCS problems, on any year NSX.garyn said:
This sounds more like a main relay problem than a TCS problem. :wink:
If it is, you'll need to buy a replacement. It's easy and not all that expensive (around $50, IIRC).garyn said:
It can be fixed if you are handy with a soldering iron but most people just replace it.
Here is a picture of the main relay http://www.nsxprime.com/forums/showpost.php?p=312327&postcount=5
its behind the passenger seat.
Yes its a dealer part. If the power to the TCS system is intermintant then it will fault and stay faulted until the car is turned off and restarted.
its behind the passenger seat.
Yes its a dealer part. If the power to the TCS system is intermintant then it will fault and stay faulted until the car is turned off and restarted.
Thanks again Brian. Is the fail safe relay located in the main relay box? Just for your information, I recently installed a SOS throttle body and SOS chip. Could the TCS error code 5-1 have anything to do with this install? Also, I just changed the two main coolant hoses. Could coolant all over the engine compartment be the cause of this error code?
Hey garyn,
Glad to hear the problem is solved. I recently installed the SoS BBTB and ECU. What are your initial impressions of the upgrade? I enjoy the higher redline and I notice better throttle response and all around driveabilty has improved slightly. Not sure how much of that is reality or placebo effect though.
Glad to hear the problem is solved. I recently installed the SoS BBTB and ECU. What are your initial impressions of the upgrade? I enjoy the higher redline and I notice better throttle response and all around driveabilty has improved slightly. Not sure how much of that is reality or placebo effect though.
Hugh, I also got better throttle response and better accelleration. I had a problem with an eratic idle but the t/b from SOS solved that problem. I was planning to do a transmisssion swap with the close ratio gears and ring and pinion next. I'll be sure to pm once that is done. Take care and Aloha!
I needed to reset my idle as per the service manual after the new TB went on. Took all of 15 minutes.
Aloha right back atya!
Aloha right back atya!
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