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Is the ABS module also known as the ECU?
If the abs module is shorted wouldn't I have seen more than 1 error code show up?
Here is the link to the information I stated in my convo with your expert:
Please read the information and reply to its validity. This states that there is voltage going to the sensor and I never got a response from your tech about this information.
It says that the voltage should be less than 5volts. Your tech dismissed my info that I stated at the top of my convo. I said initially I took voltage readings at the sensor plug or harness connection 2 or 3 times before he finally replies, "The voltage readings make no sense..." He says this after I posed the information 2 or 3 times. Also, I am using terminology used in a Haynes reference manual which uses "ABS ECU" in place of ABS module. I wanted to confirm that term with the tech but he dropped the convo due to frustration. And one more thing, the ABS ECU is adjacent to the glove compartment according to the Haynes reference book and not under the hood near the ABS actuator again a Haynes reference. I may be a DIY'r with limited knowledge but I do reference things before I approach the problem.
Great, thanks for the image, it is the only one I have come across that has the actuator in the same spot as my car. most others use a camry image along the front right wheel fender. Bear with me as I feel we are making progress. Please read below.
This is a Bosch ABS system. Not Nippondenso.
All the following measuements were taken with sensor harness disconnected and off the feed wire to sensor.
Ok, I have checked the other rear wheel which has not been giving me an open sensor code. With the harness sensor disconnected and no running engine, and no key in ignition I get 290 millivolts. With engine running and harness still disconnected from sensor I get 4.8volts. With key in ignition and accesories on, engine off, I get the same 4.8 volts. This is the sensor that is not giving me an error code. Are you sure no voltage should be present with wheels not rotating? If so, why do I not get a code for this sensor as well as the other? Nor do I get an ABS ECU error code? wouldn't I get an error code for the abs control module if it were blown?
On the side giving me the open sensor error code I get 11.4 volts, not millivolts, with engine off and no key in ignition and sensor disconnected. With engine running I get 13.4volts and with acceroriies on, no engine running, I get 11.6volts.