J2 Check ABS Valve Operation

- Turn ignition switch OFF.

Anti-Lock Control Module:

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

Breakout Box:

- Connect EEC-IV breakout box 014-00322 with Anti-Lock Test Adapter T90P-50-ALA or equivalent to the Anti-Lock 55-pin connector on wire harness.

- Lift vehicle and rotate wheels to ensure they turn freely.

- Jump pins 19 and 34 at breakout box.

- Short pins 20, 2 and 60 to each other at breakout box.

- Apply moderate brake pedal effort and check that LH front wheel will not turn.

- Check to see that LH front wheel turns freely when ignition switch is in RUN.

CAUTION: Do not leave ignition switch in RUN for more than 1 minute, or valve damage may result.

YES -- Turn ignition switch OFF. Disconnect wire leads. Go to J3. J3 Check ABS Operation RH Front Wheel

NO -- Verify correct wiring between anti-lock brake wiring connector and 19-pin connector on brake pressure control valve block. If wiring is correct, replace brake pressure control valve block.