Century L4-2.2L VIN 4 (1994)
Wheel Speed Sensor: Customer Interest
ABS - Lamp ON/ DTC 34 and/or 35 May Be Set
FILE IN SECTION: 5 - Brakes
BULLETIN NO.: 53-50-13
DATE: June, 1995
SUBJECT:
ABS DTC 34 and/or 35 May Be Set (Replace/Repair Harness)
MODELS:
1994 Buick Century
1994 Oldsmobile Cutlass Ciera
CONDITION
A customer may comment that the "ABS" warning light is on. DTC's 34 and/or 35 may be set, along with 55. Following the Service Manual diagnosis
usually leads to replacement of the rear wheel speed sensor jumper harness or EBCM, which fixes the vehicle temporarily. However, the customer may
return in a few days with the same comment.
CAUSE
Water can enter one or both of the ABS rear wheel speed sensor jumper harnesses at connectors C105 or C106. The water can then wick down the
jumper harness and up the body harness. This water can lead to a voltage leak, to ground, sometimes so slight that it cannot be detected, even by a good
digital volt-ohmmeter.
This was corrected in production just prior to the start of the 1995 model year, by relocating the connectors out of the water splash area.
CORRECTION
1. Replace both the right and left rear wheel ABS speed sensor jumper harnesses with P/N 12148674. Follow the instructions in the 1994 Service
Manual, Page 5E1-193. Notice that the new harness is about 8" (200 mm) longer than the old harness. Install the rosebud clip on the new harness
into the hole where the old connector clip was (see Figure 1).