Brake pedal vibration
Instructor
Joined: Apr 2009
Posts: 228
Likes: 0
From: Ottawa Ontario
Steve
Racer
Joined: Jul 2011
Posts: 491
Likes: 38
He likely has an issue related to EBCM and / or the steering wheel position sensor.
To the OP, pull the codes out of the DIC and post which ones you're getting. I am gonna bet P1287/1288 shows up.
Happened to me, replaced steering wheel position sensor and fixed the problem.
To the OP, pull the codes out of the DIC and post which ones you're getting. I am gonna bet P1287/1288 shows up.
Happened to me, replaced steering wheel position sensor and fixed the problem.
Drifting
Joined: Jan 2008
Posts: 1,722
Likes: 138
From: Florida
St. Jude Donor '09
Tech Contributor
Joined: Dec 1999
Posts: 32,910
Likes: 2,402
From: Anthony TX
CI 6,7,8,9,11 Vet
St. Jude Donor '08
At the base of the steering wheel where it goes thru the fire wall is a Steering Wheel Position Sensor (SWPS)
If the SWPS starts going bad, it puts out erroneous data/voltages. The EBTCM reads this stray voltage as a driver induced steering wheel input. Even though you did not actually turn the wheel LEFT or RIGHT!
IF, the (FALSE) SWPS output is telling the EBTCM that you told the car to turn LEFT, and the accelerometers that monitor the actual direction the car is traveling is telling the EBTCM that the car is still going STRAIGHT, the EBTCM starts applying BRAKE pulsations thru the BPMV to the wheels to help you get the car going in the CORRECT (what it thinks is correct) direction.
So,,,,,,,,,,,,,,,, find a NEW SWPS and install it. Simple as that!
Bill
If the SWPS starts going bad, it puts out erroneous data/voltages. The EBTCM reads this stray voltage as a driver induced steering wheel input. Even though you did not actually turn the wheel LEFT or RIGHT!
IF, the (FALSE) SWPS output is telling the EBTCM that you told the car to turn LEFT, and the accelerometers that monitor the actual direction the car is traveling is telling the EBTCM that the car is still going STRAIGHT, the EBTCM starts applying BRAKE pulsations thru the BPMV to the wheels to help you get the car going in the CORRECT (what it thinks is correct) direction.
So,,,,,,,,,,,,,,,, find a NEW SWPS and install it. Simple as that!
Bill
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