Hi.
The VSA light comes on after about 10 mins driving. It resets on next engine start but again comes on after 10 min. ECM swapped nil fix. What next, ABS module?

 

There are a few different reasons that light pops up, might run the codes and see what comes on when the VSA light is on.

 

I have P2646 (rocker arm actuator system performance stuck off bank 1, P2272 o2 signal sensor biased/stuck lean bank 2 sensor 2 and P0157 O2 sensor circuit low voltage bank 2 sensor 2.
Perhaps the O2 codes are a symptom of the rocker arm issue?
Would a fault in this system cause a VSA fault?

 

Need to pull the VSA codes, not all OBD scanners will read it. Can do the jumper method and read the blink codes on the dash.

VSA is part of the ABS module under the hood.

 

In my experience, whenever I got a CEL, the VSA light would come on too. Get those codes sorted out.

 

CEL?

 

Check Engine Light

 

Oh, thanks!
I only have the VSA light, not a CEL.

 

said you had codes for rocker arms and o2 sensors...?

 

Yes. Thinking the O2 sensor codes are a symptom of the rocker issue...

 

No. that VSA code deals with the brake system, not the rockers or 02 sensors

 

Doesn't VSA also affect engine revs, therefore a fault in engine performance would reflect as a fault degrading VSA performance?

 

Nope. Its part of your traction control system which utilizes the brakes as required by law on modern US. cars now.

But, it could be affected by a bad wheel speed sensor as that's what the system uses to determine if there is "slippage" on the tire as compared to the others. THAT could affect performance because the brakes are possibly being activated when they shouldn't be causing poor acceleration.

 

OK - I'm confused...but thanks for reply.
http://techinfo.honda.com/rjanisis/p...000o00189a.pdf

 

Yes.
Part of the way the VSA system mitigates slippage is by controlling the throttle plate, in addition to using the brakes.

On some Hondas ,when the CEL is active,the VSA is disabled. (The PCM doesn't differentiate between codes,it will disable the VSA for any CEL)

Off the top of my head,I do not recall if this particular model does this.

OP you need to pull the VSA codes.

 

I've wondered why I was not getting CEL or wrench symbols. The dealer I purchased the car from or the one previous owner has blanked the cluster light (behind facia) with RTV...