Brakes - Drag, Poor Mileage, or Pulling to One Side
Group: 46Number: 94-01
Date: May 15, 1994
Subject:
Cruise Control Brake Pedal Position Switch
- Brake Drag Due to Mis-adjustment
Model(s):
Golf III / Jetta III w/Cruise Control-1994 Model Year
CONDITION
Brake drag caused by mis-adjustment of the cruise control Brake Pedal Position (BPP) Switch. Customer may complain of brake drag. Related complaints may include poor mileage, pulling to one side while driving or braking, brake noise such as scraping or squealing due to glazed pads.
PRODUCTION
Improved assembly procedures using new gauges have been implemented in production.
SERVICE
Check and adjust the BPP switch. This can be done without removing any underdash panels, but the foam padding must be moved aside.
- Unplug the electrical connector from the brake light switch and remove the switch.
- Check the position of the plunger on the BPP switch, mounted directly above the brake light switch. If the plunger head is bottomed against the sensor housing, the brake pedal may not return to it's rest position.
- A properly adjusted switch will have approximately 5 mm of clearance between the plunger head and the sensor housing (arrows).
- To adjust the BPP switch for proper function, unplug the electrical connection and vacuum hose from the switch.
- Connect an ohmmeter (Fluke 83 or equivalent) to the terminals of the switch using the # 2 adapter - from the VAG 1594 connection test kit.
- With the brake pedal at rest, the switch contacts must be closed, and the meter should read very low resistance (continuity).
- With the brake pedal depressed 5-10 mm (measured at the bottom edge of the pedal pad), the switch contacts must open, and meter should read infinite resistance (no continuity).
- After adjusting the BPP switch, reinstall switch connector and vacuum hose.
- Reinstall the brake light switch. Reinstall the electrical connector and check for proper function.
- Road test the vehicle and check for proper cruise control function.
Warranty reimbursement: Check and adjust cruise control BPP switch as required.
Labor Operation: 27 90 71 0
Time Allowance: 20 T.U.