B1318-1: Check Power to Anti-Lock Brake Module

- Disconnect anti-lock brake wiring connector from anti-lock brake module.

- Connect Rotunda EEC-IV Breakout Box 014-00322 with Rotunda Anti-Lock Test Adapter 007-00116 or equivalent to the anti-lock brake module harness connector.

- Turn ignition switch to RUN.

- Using a voltmeter, measure voltage between breakout box pins 14 and 1.

- Is there a minimum of 10 volts DC?

YES -- Go to B1318-5. B1318-5: Check ABS Pump Motor Voltage

NO -- Go to B1318-2. B1318-2: Check Anti-Lock Brake Module Ground For Open Circuit