Subaru Impreza 2004 Service Manual page 20

HVAC SYSTEM (AUTO A/C) (DIAGNOSTICS)
• FOR LHD SOHC MODEL
AIR CONDITIONING RELAY HOLDER
20A
20A
MAIN FAN
RELAY
SUB FAN
RELAY
AIR
CONDITIONING
RELAY
COMPRESSOR
MAGNET
CLUTCH
F16
F79
F17
2 1
1 2
5 6 7 15 16 17
10
1 2
8 11
3 4
9 12 13 14
Diagnostics for A/C System Malfunction
3
4
1
2
31
34
32
30
21
24
22
20
11
12
14
10
F27
PRESSURE
SWITCH
2
1
F79
F24
B:
B283
1
1 2 3 4 5 6 7 8 9 10
5
11 12 13 14 15 16 17 18 19 20
14
F27
20 25 26 27 30
35
21 31
18 28
36
22 23 24 32 33 34
19 29
IGNITION
SWITCH
F/B No.17
F/B No.18
F45
B62
A:
B134
B:
B135
ECM
C: B136
D: B137
D:
B137
2 3 4
1 2 3 4
6 7 8 9 10 11 12 13
12 13 14 15 16 17 18 19 20 21 22 23 24
15 16 17 18 19 20
B:
B135
1 2 3 4 5 6
8 9 10 11 12 13 14 15 16 17
20 21 22 23 24 25 26
AC(diag)-18
SBF-4 SBF-1
AUTO A/C
A: B282
E
CONTROL
B:
B283 MODULE
F45 C:
5 6 7 8 9 10 11 1 2 3
7 8 9 10
18 19 20
A:
B134
1 2 3 4
7
9 10 11 12 13 14 15 16
18 19
24 25 26 27 28 29
27 28
BATTERY
MAIN FAN
MOTOR
2
M
1
F17
SUB FAN
MOTOR
2
M
1
F16
: WITH OBD
WO
MODEL
: WITHOUT OBD
OO
MODEL
B136
4 5 6
11 12 13 14 15 16 17
21 22 23 24 25 26
5 6 7 8
17 18 19 20 21 22 23
30 31 32 33 34 35
AC-00985