TEST OR INSPECTION
Disconnect main wire harness pump house single terminal connector. With a test lead
set, check for continuity across pump house wire harness wire 2454 (green) from main
wire harness pump house single terminal connector to pump house wire harness pump
house heater 3-terminal connector terminals A and B.
If continuity is present, repair wire 2454 in main wire harness if
repairable (TM 9-2320-325-14&P), or replace pump house power
distribution wire harness and block (WP 0457).
If continuity is not present, repair wire 2454 in pump house wire
harness if repairable (TM 9-2320-325-14&P), or replace pump house
wire harness (WP 0458).