A1 Check Circuit Input to Control Module

- Turn ignition switch to the OFF position.

- Connect Rotunda 60-Pin Breakout Box 007-00033 with Rotunda ABS Breakout Box 007-00115 or equivalents to the anti-lock brake control module harness connector.

- Turn ignition switch to the RUN position.

- Using Rotunda 73 Digital Multimeter 105-R0051 or equivalent set to volts DC, measure voltage between breakout box pins 5 and 21.

- Is voltage 10 volts or more?

YES -- Go to A7. A7 Check Continuity of Circuit 8 (W/P) and 91 (BK/Y)

NO -- Go to A2. A2 Check Continuity of Circuit 74 (BL)