C28 Check Circuit 462

- Disconnect wire harness to relay 7-pin plug.

- Disconnect pump motor to relay 4-pin plug.

- Turn ignition switch to RUN.

- Measure voltage between breakout box pins 31 and 60.

- Is B+ present?

YES -- Service or replace cable harness circuit 462.

NO -- Go to C29. C29 Check Circuit 351 or 604