Subaru Forester 2004 - Page 65

AC-11
HVAC SYSTEM (AUTO A/C)(DIAGNOSTIC)
Diagnostic Chart for Self-Diagnosis
1. SENSOR CHECK TABLE
NOTE:
When the sunload sensor is checked indoors or in the shade, open circuit might be indicated. Always check
the sunload sensor at a place where sun shines directly on it.
*1: Only present malfunction is indicated for open circuit of sunload sensor. (However, stored malfunction can be indicated for
short circuit of sunload sensor.)
2. OPERATING MODE TABLE
Diag-
nostic
steps
Checked sensor
Open circuit Short circuit
Present
malfunction
Stored
malfunction
DEF LED
MODE/FAN
LED
DEF LED
MODE/FAN
LED
REAR WINDOW
DEFOGGER LED
1 In-vehicle sensor
Tur n o ff
VENT
LED blinks
Illuminate
VENT
LED blinks
Turn off Illuminate
2 Ambient sensor
BI-LEVEL
LED blinks
BI-LEVEL
LED blinks
3 Evaporator sensor
HEAT
LED blinks
HEAT
LED blinks
4 Sunload sensor*1
DEF/HEAT
LED blinks
DEF/HEAT
LED blinks
5 Air mix door actuator P.B.R.
Fan speed
1st
LED blinks
Fan speed
1st
LED blinks
6
Combination meter commu-
nication (Ambient sensor)
Fan speed
2nd
LED blinks
Fan speed
2nd
LED blinks
When all parts are in good condition Turn off
Step 12345678
Illuminating LED
VENT
LED
BI-LEVEL
VENT
HEAT LED
DEF/HEAT
LED
Fan speed
1st LED
Fan speed
2nd LED
Fan speed
3rd LED
Fan speed
4th LED
Fan speed LO LO ML ML ML MH MH HI
Mode actuator VENT VENT VENT BI-LEVEL HEAT HEAT DEF/HEAT DEF
Intake actuator FRESH RECIRC RECIRC FRESH FRESH FRESH FRESH FRESH
Air mix door actuator
FULL
COOL
(0%)
FULL
COOL
(0%)
FULL
COOL
(0%)
MEDIUM
(50%)
MEDIUM
(50%)
FULL HOT
(100%)
FULL HOT
(100%)
FULL HOT
(100%)
Compressor
(magnet clutch)
OFFONONONONONONON