Subaru Impreza 2003 Service Manual page 2793

DIAGNOSTIC PROCEDURE FOR SENSORS
HVAC SYSTEM (AUTO A/C) (DIAGNOSTICS)
B: IN-VEHICLE SENSOR
TROUBLE SYMPTOM:
• When turning the AUTO switch to ON, blower fan speed, outlet port and inlet port is not changed.
• If the switch LED indicates that the sensor is malfunctioning, replace the A/C control module. The in-vehi-
cle sensor is built into the A/C control module and cannot be replaced as a single unit.
AC-31