Subaru IMPREZA 2004 Service Manual page 65

C: CONTROL MODULE POWER SUPPLY AND GROUND LINE
CAUTION:
After repair or replacement of faulty parts, conduct Clear Memory Mode <Ref. to EN(H4SO)(diag)-47,
OPERATION, Clear Memory Mode.> and Inspection Mode <Ref. to EN(H4SO)(diag)-40, OPERATION,
Inspection Mode.>.
• WIRING DIAGRAM:
MAIN RELAY
4
6
5
3
2
1
B47
E
B72 B47
1
1 2
3
3 4
5
B136
1 2 3 4 5
7 8 14 15
9 10 11 12 13 16 17
18 19 20 21 22 23 24 25
Step
1 CHECK MAIN RELAY.
1)Turn the ignition switch to OFF.
2)Remove the main relay.
3)Connect the battery to main relay terminals
No. 1 and No. 2.
4)Measure the resistance between main relay
terminals.
Terminals
No. 3 — No. 5:
No. 4 — No. 6:
Diagnostics for Engine Starting Failure
No.11
A :
B134
B :
B135
ECM
C : B136
D : B137
MT
B22
E3
E
F44
2
1 2 3 4
4
5 6 7 8
6
B134
1 2 3 4
6
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
26
EN(H4SO)(diag)-63
LHD 2 LHD
B61 F44
IGNITION
B72
SWITCH
SBF-4
4 1
B137
B22
1 2 3 4
1 2
5 6 7 8
5 6 7 8 9 10 11
9 10 11 12 15 16 17 18
14
13 14 15 16
5 6 7 8
34 35
Check
Is the resistance less than 10
Ω?
ENGINE (DIAGNOSTICS)
SBF-5
BATTERY
SBF-1
B135
1 2 3 4 5 6 7
3 4
8 9
12 13 10 11 12 13 14 15 16 17 18 19
19 20 20 21 22 23 24 25 26
Yes
Go to step 2. Replace the main
relay.
E
27 28
EN-01444
No