Subaru IMPREZA GD 2007 Series Manual page 3876

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1. SENSOR CHECK TABLE
NOTE:
When the sunload sensor check is performed indoors or in the shade, it could be diagnosed as having an
open circuit. Always check the sunload sensor at a location exposed to direct sunlight.
Air flow control
dial position
VENT
BI-LEVEL In-vehicle sensor
HEAT Evaporator sensor
DEF/HEAT
Air mix door motor
DEF
(potentio balance resistor)
2. OPERATING MODE TABLE
Operation
VENT
Air outlet VENT
Air inlet RECIRC
Air mix door Maximum cool
Blower fan
A/C compressor
Diagnostic Chart for Self-diagnosis
Sensor
A/C switch LED and FRESH/
Ambient sensor
RECIRC switch LED illuminate
A/C switch LED and FRESH/
RECIRC switch LED illuminate
A/C switch LED and FRESH/
RECIRC switch LED illuminate
A/C switch LED and FRESH/
Sunload sensor
RECIRC switch LED illuminate
A/C switch LED and FRESH/
RECIRC switch LED illuminate
Air flow control dial position
BI-LEVEL
BI-LEVEL
RECIRC
Maximum cool
5 V 5 V
ON OFF
AC(diag)-11
HVAC SYSTEM (AUTO A/C) (DIAGNOSTICS)
No trouble Short circuit
A/C switch LED
illuminates
A/C switch LED
illuminates
A/C switch LED
illuminates
A/C switch LED
illuminates
A/C switch LED illuminates
HEAT DEF/HEAT
HEAT DEF/HEAT
RECIRC FRESH
Maximum hot Maximum hot
8 V 10 V
OFF ON
Open circuit
FRESH/RECIRC
switch LED illuminates
FRESH/RECIRC
switch LED illuminates
FRESH/RECIRC
switch LED illuminates
FRESH/RECIRC
switch LED illuminates
DEF
DEF
FRESH
Maximum cool
Power supply voltage
ON