Check rear fusebox and driver side fusebox for water damage

 

Thanks for the response....That was my first check!!!

 

I guess all the Techs left the forum...

 

if it is not ABS sensors, or wiring i would check ABS module. But my guess it is wiring issues. Trace wires first...

 

Thanks Dzionnassi…

I checked the Service Manual. Looks like all the wheel sensors get their ground and signal from the VSA Modulator Control Unit. Since there is response from Driverside speed sensors, the VSA Unit is good…

The fact that I‘m getting NO continuity from the sensors must mean the Passenger side sensors are the fault… We shall see once I replaced the sensors this weekend if this is the true fix.

Also, the Brake Pedal Position Switch is on a different leg that connects to the PCM….so NO relation to the Speed Sensors at all…

Will update soon….

 

I hear you! It’s extremely strange the Foxwell showed 3 faults: brake switch & both passenger side speed sensors not working…

What’s really strange was I also jumped 4 & 9 pins on the OBD2 port to read the ABS DTCs and I got code 17 for ABS, which pointed to Driverside REAR Wheel Speed sensor…

That prompted me to do the Resistance & Continuity Test on all the ABS Speed Sensors to get to the aforementioned results….

 

where you measuring sensor, at sensor connector?

 

yes Sir! At the 2 pin connector, sensor side.

 

Update: Replaced the rear passenger side speed sensor and ran Live Data on Foxwell NT650. Still getting NO response from the newly installed sensor. Thinking Foxwell scanner Live data is wrong.

I remembered performing the ABS diagnostic procedure thru jumping pins 4 & 9 on the OBD2 connector and showing code 17 (fault with driver side rear speed sensor).

DIY: How to read DTC Codes (CEL, SRS, ABS, etc.) w/out a...

This will work on most cars with the 16-pin OBD ports (usually located underneath the steering wheel). However, do this at your own risk. There are chances you could blow a fuse if done incorrectly. This worked on my 2005 TSX so there's that. Let's get right into it: You will need a paper...

www.tsxclub.com

With that said, I replaced the driver side rear speed sensor and NO more ABS, SH-AWD & VSA lights on the dash…PROBLEM FIXED!!!

 

How difficult is that to replace? I am very much a fix it myself person, but not an auto mechanic, but very mechanical. Is it something doable with regular tools?

 

Lessons Learned:
1. when performing a resistance test on the ABS sensor itself, polarity matters in receiving accurate readings.
2. Foxwell NT650 was not accurate in providing ABS sensor Live data.
3. Trust the OBD2 ABS Diagnostic test (jumping pins 4 & 9 on OBD2 connector)

Hoping this would help the next person….

 

Lessons Learned:
1. when performing a resistance test on the ABS sensor itself, polarity matters in receiving accurate readings.
2. Foxwell NT650 was not accurate in providing ABS Live data.
3. Trust the OBD2 ABS Diagnostic test (jumping pins 4 & 9 on OBD2 connector)

Hoping this would help the next person….

have an autel... i can read the signal output of all the sensors.. i should have noted.. i replaced the original speed sensor and the problem didn't change.. then i thought to actually go to the live date mode.. where i am reading the sensor.... my suspicion is a vsa module but i would like to confirm it... i just don't know how.

 

It will be much helpful if you want to write a concise and logical post separately, with some pictures and background knowledge. Thanks

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