All Models
WARNING: This page does not describe the selected car, but rather 9 other vehicles, including the 1989 Audi 90, 1989 Audi 80, 1989 Audi 200, 1989 Audi 100, and 1988 Audi 90. However, it is still accessible from the selected car via links, so may be relevant.
- Item Being Tested - ABS Control Unit Ground (Terminal No. 20) Place ABS tester in program switch position No. 9. When button No. 5 lights up, press button. Reading on ABS tester should be 30-250 millivolts. If correct, TEST 9 is completed.
- If reading is incorrect, turn ignition off. Use ohmmeter to check continuity between terminal No. 20 in plug for ABS control unit and ground. If there is no continuity, repair wiring harness to restore continuity.