Toyota Celica 2005 Repair Manual page 1333

DI−1132
Headlight Relay Circuit
CIRCUIT DESCRIPTION
Headlight relay will be "ON" by operating the headlight switch. The transistor which activates the headlight
relay has two sorts: one is activated directly by the headlight switch for fail−safe and the other is activated
by CPU. The one activated by CPU has two systems and prevents the headlight to be turned off at the time
of trouble with one system in the automatic operation circuit.
2005 CELICA (RM1131U)
DIAGNOSTICS − BODY CONTROL SYSTEM
1332
DIAJH−03