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Home >> Buick >> 1993 >> Riviera >> Repair and Diagnosis >> Brakes >> Traction Control >> Anti-Lock Brake System - BOSCH 2U >> Diagnostic Code Charts >> Code 35 - Left Rear Wheel Speed Sensor Fault >> Notes
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Code 35 - Left Rear Wheel Speed Sensor Fault: Notes

Toothed wheel generates a voltage pulse as it moves past sensor. EBCM uses these pulses to determine wheel speed. EBCM uses wheel speed sensor signal to calculate vehicle reference speeds and speed, acceleration and slip values for each wheel. These values are used to determine when anti-lock control is needed. EBCM performs 2 basic types of checks on wheel speed sensors: sensor continuity and sensor output.

NOTE: Test numbers refer to numbers on diagnostic chart.
  1. Determines if code stored is due to a current fault. Current wheel speed sensor faults may be detected even at vehicle standstill. If ANTI-LOCK light comes on, fault is current.
  2. Checks for open or short in wheel speed sensor wiring or sensor coil.
  3. Checks for conditions which may cause intermittent code setting.