D6 Check ABS Brake Module to Ground

- Check resistance between breakout box pin 1, circuit 570 (BK/W) and a known good ground.

- Is resistance 5 ohms or less?

YES -- Go to D7. D7 Check For Excessive Wheel Vibration

NO -- Service circuit 570 (BK/W) or 530 (LG/Y). Restore vehicle. Retest system.