2004 SUBARU FORESTER diagram

AC-8
HVAC SYSTEM (AUTO A/C)(DIAGNOSTIC)
Auto A/C Control Module I/O Signal
*1: Battery voltage is indicated when motor running, 0 V or battery voltage pulse signal is output when motor stops.
*2: Battery voltage is indicated when motor running, 0 V is indicated when motor stops.
*3: Voltage can not be measured because of pulse signal.
B: WIRING DIAGRAM:

A14Combination meter (ambient temperature sig-
nal)*3 *3
A13 Mode door actuator position detection signal OutletVENT, BI-LEVEL, HEAT 5 V
DEF/HEAT, DEF 0 V
A12 Mode door actuator position detection signal OutletVENT, DEF/HEAT 5 V
BI-LEVEL, HEAT, DEF 0 V
A10 A/C cutout signalA/C: ON Battery voltage
Pressure switch operated 0 V
A9 Illumination ground When there is continuity to chassis ground 0 Ω Terminal No. Content Measuring conditionSpecified
value

AC-12
HVAC SYSTEM (AUTO A/C)(DIAGNOSTIC)
Diagnostics for A/C System Malfunction
6. Diagnostics for A/C System Malfunction
A: A/C OR SELF-DIAGNOSIS SYSTEMS DO NOT OPERATE
TROUBLE SYMPTOM:
 Switch LEDs are faulty and switches do not operate.
 Self-diagnosis system does not operate.
WIRING DIAGRAM:
AC-00149
A:
i48B:
i49B201
12345678
910 11 12 13 14 15 1612345678910
11 12 13 14 15 16 17 18 19 20
E
A:
i48B:
i49
i40
B201
SBF-1BATTERY IGNITION
SWITCH
AUTO A/C CONTROL MODULE
M/B NO.2SBF-4
F/B NO.17
B5B4B11
3
4 128910 11
12 13 14 15 16 17 18 19 20 21 22 23 2456 7
B202
3
4 128910 11
12 13 14 15 16 17 18 19 20 21 22 23 24567
LHD
14
4
10
19 2113RHD
: LHD MODEL
: RHD MODELLHD
RHD
: LHD
: LHD
B202: RHD
i41: RHD

AC-14
HVAC SYSTEM (AUTO A/C)(DIAGNOSTIC)
Diagnostics for A/C System Malfunction
B: BLOWER FAN DOES NOT ROTATE.
TROUBLE SYMPTOM:
 Blower motor does not rotate.
 Blower motor does not change.
WIRING DIAGRAM:
AC-00150
E
B50
B50B87A:
i48B:
i49 4
312
B87 5
21
SBF-1SBF-3 F/B NO.1
SBF-4
F/B NO.2
F/B NO.17
B16B15
18
B202
B202
i41
22
341212345612345678
910 11 12 13 14 15 1612345678910
11 12 13 14 15 16 17 18 19 20
34 12 8910 11
12 13 14 15 16 17 18 19 20 21 22 23 24567
A: i48B: i49BATTERY
IGNITION
SWITCH
BLOWER
MOTOR RELAY
BLOWER MOTOR
B201
34 12 8910 11
12 13 14 15 16 17 18 19 20 21 22 23 2456 7
3
RHDRHD
LHDLHD
: LHD MODEL
: RHD MODELLHD
RHD
B201i40
AUTO A/C CONTROL MODULE

AC-16
HVAC SYSTEM (AUTO A/C)(DIAGNOSTIC)
Diagnostics for A/C System Malfunction
C: COMPARTMENT TEMPERATURE DOES NOT CHANGE, OR A/C SYSTEM
DOES NOT RESPOND PROMPTLY.
TROUBLE SYMPTOM:
 Compartment temperature is not changed. (No cool air is discharged.)
 A/C system does not respond quickly.
WIRING DIAGRAM:
 LHD model
AC-00882
A: B134 :
B: B135 :
B202
D: B137 :C: B136 :
F2F27
EA:
i48
F27
F17
F79
F45
B62
B202
i41
F24
F24
F16F79
F45
F17
B:
i49A:
B134 B136
B135 B137C:
B:D:IGNITION
SWITCHBATTERY
A/C RELAY HOLDER
FAN RELAY
FAN RELAY
A/C RELAY
PRESSURE SWITCH
COMPRESSOR
MAGNET
CLUTCH FAN MODE RELAYSUB FAN FUSE
MAIN FAN FUSE
MAIN FAN MOTOR
1
M
SBF-1SBF-4F/B NO.17
F/B NO.18
1
2
3
2
1
4
3033
32 31
34
86
7 9
5
2926
27 28
25
1916
15 18
17
43
21
B15A10B17
F17
MAIN FAN MOTOR
M
F16
SUB FAN MOTOR
M
F16
SUB FAN MOTOR
M
1
2112 1314
15 16171819
20
10
1121222324
2526272829
3031323334
35
36
12
93456
7
82 314
567
82 1
94
310
24 22 23 251112131415
26 27
281617181920 21
4
1
53
2618 15 167891011
17 19
20121314
1234567891011121314151617181920212223242526272829303132333435
AUTO A/C
CONTROL MODULE ECM
2421
1234 5678910 11 12 13 14 15 16 17 18 19 20
123 4567
8910 11 12 13 14 15 16
56
78 2 1
94
310
24 22 23 251112131415
261617181920 21
34 12 8910 11
12 13 14 15 16 17 18 19 20 21 22 23 24567
D: B137 :
B: B135 :C: B136 :
A: i48
12345678
910 11 12 13 14 15 16
B: i49
12345678910
11 12 13 14 15 1617 18 19 20
: TURBO MODEL : B33
NON-TURBO MODEL : A91*
: TURBO MODEL : B24
NON-TURBO MODEL : A132*
: TURBO MODEL : B25
NON-TURBO MODEL : A143*
: TURBO MODEL : C30
NON-TURBO MODEL : B114*
: TURBO MODEL : D17
NON-TURBO MODEL : C115*
: TURBO MODEL : D13
NON-TURBO MODEL : D136*
: TURBO MODELTB
: NON-TURBO MODEL
NA
: EXCEPT NON-TURBO
AT MODEL
ET
ETNA
TB
TBNANANATB
1112
10
3
18 1
*2*3*4*5*6*
2F2
B100
ET
ETTA
TA
ET
TA
ET
: TURBO AT MODEL
TATA
TA
ET
:
ET :
F16
F17
TA :
TA :
567
82 1
94 310
24 22 23 2511 12 13 14 15
26 27
2816 17 18 19
20 21
29 30 31 32 33 34 3556
782 1
94 310
24 22 23 2511 12 13
1415
26 27
2816
17 18 19 20 21
33 34 29
32 30
31 35
567
82 1
94 310
22 23 11 12 13 14 15
24 25
2616 17
18 19 20 21
27 28 29 30 31
12
1
2
2 1
12

AC-21
HVAC SYSTEM (AUTO A/C)(DIAGNOSTIC)
Diagnostic Procedure for Actuators
7. Diagnostic Procedure for Actuators
A: INTAKE DOOR ACTUATOR
TROUBLE SYMPTOM:
FRESH/RECIRC mode is not changed.
WIRING DIAGRAM:
AC-00153
B91A:
i48B:
i49
12345678
910 11 12 13 14 15 1612345678910
11 12 13 14 15 16 17 18 19 20
B91
i41 :
B202 : IGNITION
SWITCHBATTERY
SBF-1SBF-4F/B NO.17
43
141312
B18B20B19
1234
B202
34 12 8910 11
12 13 14 15 16 17 18 19 20 21 22 23 24567
A:
i48B:
i49AUTO A/C CONTROL
MODULE
INTAKE DOOR
ACTUATOR
B201
34 12 8910 11
12 13 14 15 16 17 18 19 20 21 22 23 2456 7
: LHD MODEL
: RHD MODELLHD
RHD
: LHD MODEL : 2
: RHD MODEL : 1
: LHD MODEL : 1
: RHD MODEL : 2
1*
2*
LHD465RHD
i40 :
B201 :
LHDRHD
LHDRHD
1*2*

AC-23
HVAC SYSTEM (AUTO A/C)(DIAGNOSTIC)
Diagnostic Procedure for Actuators
B: MODE DOOR ACTUATOR
TROUBLE SYMPTOM:
Air flow outlet is not changed.
WIRING DIAGRAM:
AC-00154
B77A:
i48B:
i49B202
12345678
910 11 12 13 14 15 1612345678910
11 12 13 14 15 16 17 18 19 203
4 128910 11
12 13 14 15 16 17 18 19 20 21 22 23 24567
B77
i41
B202
471210895
6
1110867915
B8B9A5
A4A12
A13
A16
12345678910
A:
i48B:
i49AUTO A/C CONTROL
MODULE
MODE ACTUATOR : LHD MODEL
: RHD MODEL
LHD
RHD
171854789LHD RHD

AC-28
HVAC SYSTEM (AUTO A/C)(DIAGNOSTIC)
Diagnostic Procedure for Actuators
C: AIR MIX DOOR ACTUATOR
TROUBLE SYMPTOM:
Outlet air temperature does not change.
WIRING DIAGRAM:
 LHD model
AC-00106
i65A:
i48B:
i49
12345678
910 11 12 13 14 15 1612345678910
11 12 13 14 15 16 17 18 19 20
i65
43126
A7A16B1B7B6
12
3456
A:
i48B:
i49AUTO A/C CONTROL
MODULE
AIR MIX DOOR
ACTUATOR

AC-32
HVAC SYSTEM (AUTO A/C)(DIAGNOSTIC)
Diagnostic Procedure for Sensors
8. Diagnostic Procedure for Sensors
A: AMBIENT SENSOR
TROUBLE SYMPTOM:
 Fan speed is not switched when the fan speed control dial is in AUTO position.
 Malfunction related to ambient sensor is indicated in self diagnosis.
WIRING DIAGRAM:
 LHD model
AC-00107
A:
i48B:
i49B:
i10
12345678
910 11 12 13 14 15 1612345678910
11 12 13 14 15 16 17 18 19 20
3
4 128910 11
12 13 14 15 16 17 18 19 20 21 22 23 24567
i41
B202
B202B38
i3
B38
B:
i10
COMBINATION
METER
A:
i48B:
i49
19
A14
24
B30
123456789101112131415161718192021222324252627282930
219
32
1234 5610 11 12 13 14 15716
23 3019 20
22 26 27 28 29817
24 3118
25
AUTO A/C
CONTROL
MODULE
i2
B37
141521
B24
B25
12
B62F45F78AMBIENT
SENSOR
B37
3
4 12
8910 11 12 13 14 15 16567
F45
12
F78