2000 BMW 740I 4.4L, V8, Des M62, USA/Canada
Scott Schneider - Folsom Auto Center
This info may help
Number: 347828
Vehicle Application:
1999 528I 2.8 2000 540I 4.4
2000 528I 2.8 2000 740I 4.4
1999 528IT 2.8 2000 740IL 4.4
2000 528IT 2.8 1999 750IL 5.4
Customer Concern:
The traction control and anti-lock brake light is on.
Average Reported Mileage:
121159
Tests/Procedures:
1. Code 31 relates to the right rear wheel speed sensor, code 32 relates to right front. Clear the code with a BMW compatible scan tool. Then retest and see if a code resets as a hard fault. The wheel speed can be checked with most BMW software using the data stream.
2. Unplug the Wheel Speed Sensor (WSS). Turn the key on. Test the voltage on both pins on the wire harness side of the connector. They should both read 8v.
3. Reconnect the sensor. Back probe the sensor for testing. May need an adaptor to connect to the harness as the pins are very small. One of the wires should show a 2.5v wave form as the wheel is turned.
Tech Tips:
The Instrument Panel Cluster (IPC) uses the signal from the Left Rear (LR) speed sensor to calculate the vehicle speed. The traction control module exports a speed signal to the IPC via the bus line. If the traction control module is replaced, it needs to be coded to the vehicle at the dealer, otherwise the Traction Control (TC) light will come on. There is a pattern failure of the traction control module for these codes and no speedometer operation. BMW bulletin #340299 addresses '5' and '7' series vehicles produced between 9/98 and 3/99 with a wheel speed sensor fault. The bulletin includes an updated part number, but have not seen this fix used a whole lot yet.
Author:
Robert Jacobs
Diagnostic Codes
ABS 31
Potential Causes
Traction Control Module
Defective Wheel Speed Sensor (WSS)
Wiring Harness — Possible wiring harness concern due to damage in the harness.
Confirmed Fix Summary
Confirmed Fix
2 - Traction Control Module
1 - Traction Control/Antilock Brake Module
1 - Antilock Brake System (ABS) Control Module, Brake Fluid Flushing Procedure
1 - Antilock Brake System (ABS) Control Module
1 - Body Ground Cable
1 - Right Rear Wheel Speed Sensor (WSS) Wiring
Confirmed Fix Details
Tech Reported Fix Details
Confirmed Fix
Robert Dennis
December 27, 2011
2000 BMW 528I, 2.8L, L6, Des M52TU, USA *
Traction Control Module
- Faulty ABS Module
Traction Control Module
Larry Baile
September 23, 2008
2000 BMW 528I, 2.8L, L6, Des M52TU, USA *
Traction Control Module
126,224 miles Traction Control Module
Marco DiLabio
August 14, 2013
2000 BMW 540I, 4.4L, V8, Des M62, Canada *
Antilock Brake System (ABS) Control Module
127,000 miles Antilock Brake System (ABS) Control Module
Chris Wilson
August 09, 2013
2000 BMW 740IL, 4.4L, V8, Des M62, USA *
Antilock Brake System (ABS) Control Module
Brake Fluid Flushing Procedure
150,045 miles Antilock Brake System (ABS) Control Module, Brake Fluid Flushing Procedure
Alan Wolff
March 27, 2012
1999 BMW 540I, 4.4L, V8, Des M62, USA *
Body Ground Cable
- found loose ground at rear corner of vehicle in battery compartment--cleaned and tightend-- problem solved
Body Ground Cable
Josh Dutcher
April 21, 2010
2000 BMW 740IL, 4.4L, V8, Des M62, USA *
Right Rear Wheel Speed Sensor (WSS) Wiring
105,864 miles Right Rear Wheel Speed Sensor (WSS) Wiring
Nick Emanouel
May 11, 2010
2000 BMW 528I, 2.8L, L6, Des M52TU, USA *
Traction Control/Antilock Brake Module
141,000 miles Traction Control/Antilock Brake Module
