Toyota Celica 2005 Repair Manual page 1366

INSPECTION PROCEDURE
1 Check courtesy switch (See page BE−32).
OK
2 Check that there is a grounding malfunction caused by looseness of the tighten
screw.
OK
3 Check wire harness and connector between courtesy light and body ECU, cour-
tesy switch and body ECU (See page IN−30).
OK
Proceed to next circuit inspection shown on
problem symptoms table (See page
DI−1124).
2005 CELICA (RM1131U)
DIAGNOSTICS − BODY CONTROL SYSTEM
NG Replace the courtesy switch.
NG Install screw.
NG Repair or replace wire harness or connector.
1365
DI−1165