Yes, the VTM-4 module will light up.
Here's the deal; when you manually turn on the Variable Torque Management-4 system, the light to the console switch is illuminated- letting you know that the vehicle is in traction control mode- and it is functioning properly.
However, if you did not manually activate the VTM, and your cruising along under normal driving conditions, but you start experiencing engine problems, like when the Exhaust Gas Recirculation valve starts to malfunction, this malfunction will cause the engine to misfire and lose engine power.
When this loss of engine power occurs, the VTM perceives that the engine power is being reduced to restore traction to the car's drive line (axle and wheels)- so it triggers the light to go on.
The triggering of the VTM could also happen when the idle speed control valve malfunctions.
So once you have the EGR valve replaced, the codes on the OBD module should be cleared; the check engine light will turn off; and the VTM system light will turn off too.
SOURCE: 09 Ridgeline showing VTM-4 and Check engine light
Hi, An '09 should be under warranty or I'd least take it in and 'nicely' ask that it be covered under warranty.
This LINK may help w/the VTM-4 info...but not sure about the EGR.
GL,
Td
SOURCE: i got check engine light and vtm 4 light on my
its a sensor packed up visit a local mechanic to fit a new sensor
SOURCE: i have a honda acura
You will only know the system with the malfunction,
when you retrieve any codes
Then diagnose the issue, using the codes and
a trouble chart
Apparently what has most likely happened is you were on a wet or ice road and may have lost traction on the road. You may have never even noticed, but your vehicle did. The vehicle compensated for the road condition & probably revved the engine a little to low, which probably turned on the check engine light. This is a scenario only.
The best way to find out what's wrong is to have the computer scanned for trouble codes. The trouble code will point to the problem. Several auto parts stores will do this for free or rent you a scanner so you can scan it yourself. If the code isn't obvious or you need more help you can come back here and I'll walk you through figuring it out.
It also could be you need to change the rear differential fluid. There
was a TSB for this vehicle. I am not sure if your vehicle falls into it.
You could check with the dealer as well.
Hope this helps; also keep in mind that your feedback is important and I'll appreciate
your time and consideration if you leave some testimonial comment about
this answer.
Thank you for using Fixya, and have a nice day
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