2001 bmw 330 e46 fix
2629 Views 3 Replies Latest reply: 2015-09-02 07:54:20
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Level 7
(962) points
Customer complained right front brake caliber would intermittently grab the front rotor while driving...Scanned vehicle code read (5E38 abs-dsc rotation rate sensor)....Took maxysis and check all four abs wheel speed sensors signals,all were good, then checked abs-dsc pump,pump actuated,pulled front wheel and checked for sticking caliber piston at right front wheel. under pressurized test 25psi , checked steering angle sensor signal sweep,calibration was good at point -0-, next checked yaw rate signal , signal showed negative degrees of rotation at -0- steering calibration.Replaced the yaw rate sensor, coded sensor,steering angle and dsc module all together. -
Level 9
(5837) points
You mean to say that..............The Yaw Rate Sensor was the cause for front right wheel to brakes lock on its own................? -
Level 10
(7578) points
I believe The yaw sensor basically senses the angle the car's body roll leaning to one side left or right. Probably would stay at or close to zero degrees if you just turn steering wheel from stop to stop without car moving.
The tech with the Southern draw is likely to have a "Yaw Come-back Now, Ya Hear" -
Level 7
(962) points
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