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Old Feb 14, 2013 | 02:34 AM
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The Highlander
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From: Brighton, MI
Default C1233

On my way home... bam... Christmas in February!
Pull codes, C1233.... Reset.... Dash still lit up.

Go to the shop to check....
RF WSS Short or Open

Check the pins... pins ok. I did adjust them anyways...
Same codes
Changed the harness
Same codes

Measured the Resistance of the WSS
1.088kohm (within range)
AC Voltage... perfect and ok..
Changed the hub anyways....
Same code

Changed the EBCM
Same code although this one would give me a no comm from time to time.
Changed it back... same codes

Measured pin 24 and pin 10 on the EBCM. They have connection and no resistance to the WSS.
Checked to see if they were shorted to ground... none are shorted to ground
Checked if they had voltage.... NO voltage independently

Measured voltage between the 2 pins and I got 4.93v

Removed the right rear connector
Code c1235 was set (as expected)
Measured voltage between the 2 pins 4.86v
Connected back, cleared coded, didn't come back except c1233.

I am not sure how much voltage i should see across the pins, but I assume that .07v is not going to cause this code.

The manual doesn't state what voltage we should see between pins A/B.

The manual states that i should see no less than .25v and no more than 4.25v. I didn't pinch the cable while it was connected to see the voltage, I guess that is one other thing I could check.

Any ideas?

I have read a lot of posts and didn't find anything else to check other than grounding the Stainless Steel braided lines (I don't have those lines installed, they are factory). How do I go about grounding anything on the hub itself?

Did I miss to check anything?

My next test is to try the EBCM i have on my father's car to see if I still get the same codes on his car. This is assuming that both of the EBCMs i have are damaged.... Could be! but I doubt they would both give the SAME c1233 code.

Any other thoughts?
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