What was found
PASSING FL320 LGCIU 1 CIRCUIT BREAKER OPENED WITH ASSOCIATED ECAM MESSAGE. TURNED OFF GPWS IN ACCORDANCE WITH PROCEDURE. RESET LGCIU 1 C/B, IT POPPED IMMEDIATELY. DIVERTED TO IAD DUE TO LGCIU 1-2 FAILURE. LANDING GEAR GRAVITY EXTENDED. NO NOSE WHEEL STEERING.