Toyota Celica 2005 Repair Manual page 1382

INSPECTION PROCEDURE
1 Check for open and short in wire harness and connector between body ECU and
airbag sensor assembly (See page IN−30).
OK
2 Check the airbag sensor assembly (See page DI−882).
OK
Replace the body ECU.
2005 CELICA (RM1131U)
DIAGNOSTICS − BODY CONTROL SYSTEM
NG Repair or replace wire harness and connector.
NG Replace the airbag sensor assembly.
1381
DI−1181