Toyota Celica 2005 Repair Manual page 2250

+B power source check:
Check that there is constantly 10 to 14 V voltage at the
connector terminal 5 (+B) of the wireless door control
receiver.
Yes
Body ground check:
Check that continuity exists between the connector
terminal 1 (GND) of the wireless door control receiver
and body ground.
Yes
Wireless door control receiver faulty.
2005 CELICA (RM1131U)
BODY ELECTRICAL − WIRELESS DOOR LOCK CONTROL SYSTEM
No
No
2249
DOME fuse or wire harness faulty.
Wire harness faulty.
Body ground open and contact error.
BE−75