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Re: ABS sensor diagnosis with a Tech II?
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Posted by skibumm100 [Email] (#3255) [Profile/Gallery] (more from skibumm100) on Sun, 25 Jul 2021 09:45:36 Share Post by Email
In Reply to: Re: ABS sensor diagnosis with a Tech II?, skibumm100 [Profile/Gallery] , Wed, 7 Jul 2021 04:17:42
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Good news and bad news....

I can connect to the car on V44.000. I got into the chassis/ABS page and when stationary I can read the ABS values. The brake pedal force is being sensed and the wheel speeds are all showing 1 MPH. I cannot record data as the Tech 2 loses communication and will not reconnect until I shut off the car and start over. Once it loses communication it will not reconnect. I was able to monitor the real time values page for a short time while going slowly down an empty road. The sensors all ramped more or less evenly to 11 MPH and never went any higher. Even at 20-25 MPH they read 11 MPH. Then it lost communication again. It does not lose communication when monitoring the engine parameters, only the ABS system. I think if I can keep it communicating and take a copilot, I might be able to see something. Right now it just loses communication. I was powering the Tech 2 off the cigarette lighter plug and not powering the OBD II connector.

When I first read the DIC information it had "22251 Intermittent - Main Relay Circuit - Incorrect"

I cleared that. The battery has gone dead on this car several times from sitting too long.The code has not reappeared since clearing it.

posted by 69.136.150...
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