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Famous DSC/ABS/BRAKE Trifecta problem
I've been chasing DSC/ABS/BRAKE Trifecta problem and couldn't solve it still.
Wondering if I can get some insight from members. I'm using PA Soft BMW scanner for diagnostics. 1. Originally I had following ABS codes - Pressure Sensor, open circuit - Temperature of the brakes overheated After long search looked like the Bosch DSC III 5.7 is bad. So shipped it to BBA-Reman for repair. 2. Received repaired Bosch DSC from BBA-Reman, installed but Trifecta still persists. Read the code, and it's different codes this time. - Wheel speed sensor rear right, open circuit - Lateral acceleration Sensor, open circuit - Temporary system deactivation So for testing, I've un-plugged Lateral acceleration sensor which is located under center console. 3. Read the code again, and it shows following codes - Lateral acceleration Sensor, open circuit - Yaw rate Sensor, open circuit - Temporary system deactivation Notice Wheel speed sensor error is gone now? But there is new code for Yaw sensor. Wondering, isn't Lateral acceleration sensor and Yaw rate sensor the same thing? 4. So I purchased used Lateral acceleration sensor (with newer superseded part#), installed. But Trifecta still persists. Read the code again. - Lateral acceleration Sensor, open circuit - Yaw rate Sensor, open circuit - Temporary system deactivation At this point, I'm not sure where to go further. I guess I can try another Lateral acceleration senor, and/or new speed sensor, but don't want to keep dump money into it. Any thoughts? helps? Thanks. |
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