Toyota Celica 2005 Repair Manual page 1230

INSPECTION PROCEDURE
Always lights up, when ignition switch is in LOCK position
1 Prepare for inspection (See step 1 on page DI−1025).
2 Does SRS warning light turn off?
Airbag Sensor Assembly
LOCK
AB0117 H01293
YES
Replace airbag sensor assembly.
2005 CELICA (RM1131U)
DIAGNOSTICS − SUPPLEMENTAL RESTRAINT SYSTEM
PREPARATION:
(a) Turn the ignition switch to LOCK.
(b) Disconnect the negative (−) terminal cable from the bat-
tery, and wait at least for 90 seconds.
(c) Disconnect the airbag sensor assembly connector.
(d) Connect the negative (−) terminal cable to the battery.
CHECK:
Check operation of SRS warning light.
H01295
NO Check SRS warning light circuit or terminal AB
circuit of DLC3.
1229
DI−1029