Subaru Legacy 2004 Service Manual page 903

Diagnostic Procedure with Diagnostic Trouble Code (DTC)
ENGINE (DIAGNOSTICS)
WIRING DIAGRAM:
• EC, EK and K4 model
ELECTRONIC
THROTTLE
CONTROL RELAY
B138 : LHD
B122 : RHD
B21
E2
E
B362
3
1 2
4
5
7 8
6
B: B135
1 2 3 5 6
4 7
8 9 10 11 12 13 14 15 16 17
18 19
20 21 22 23 24 25 26 27
28 29 30 31 32 33 34 35
• KA and KS model
NOTE:
Fuel injection system for KA and KS model is the same as 2.0 L model. Refer to EN(H4SO 2.0) section.
B362
7
5
6
8
ECM
B: B135 C: B136
LHD 8
LHD 3
*
1 RHD
*
2 RHD
ELECTRONIC
THROTTLE CONTROL
E57
B122
B83
B138
1 2 3 4
5 6 7 8
C: B136
1 2 3 5
4
7 8 9 10 11 12 13 14 15 16
17 18 19 20 21 22 23 24 25 26
28 29 30 31 32 33 34 35
EN(H4SO 2.5)(diag)-144
MAIN RELAY
D: B137
B83
B83
B20
E1
E
B21
1 2 3 4 5 6 7 8 9 10 11
12 13 14 15 16 17 18 19 20 21 22
23 24 25 26 27 28 29 30 31 32 33
34 35 36 37 38 39 40 41
42 43 44 45 46 47
48 49 50 51 52 53 54
D: B137
6 1 2 3 4 5 6
8 9 10 11 12 13 14 15 16 17
18 19 20 21 22 23
27
26 27 28 29
BATTERY
SBF-8
*
: TERMINAL NO. RANDOM ARRANGEMENT
B138
8
5
RHD
LHD 5
1
B122
B21
E2
E
B20
1 2 3 4
1 2 3 4 5 6
5 6 7 8
9 10 11 12
13 14 15 16
7
24 25
30 31
E
E57
EN-02462