Subaru 2009 IMPREZA Service Manual page 1466

Diagnostic Procedure with Diagnostic Trouble Code (DTC)
CC:DTC P0604 INTERNAL CONTROL MODULE RANDOM ACCESS MEMORY
(RAM) ERROR
DTC DETECTING CONDITION:
• Immediately at fault recognition
• GENERAL DESCRIPTION <Ref. to GD(H4DOTC)-158, DTC P0604 INTERNAL CONTROL MODULE
RANDOM ACCESS MEMORY (RAM) ERROR, Diagnostic Trouble Code (DTC) Detecting Criteria.>
TROUBLE SYMPTOM:
• Engine does not start.
• Engine stalls.
CAUTION:
After servicing or replacing faulty parts, perform Clear Memory Mode <Ref. to EN(H4DOTC)(diag)-54,
OPERATION, Clear Memory Mode.>, and Inspection Mode <Ref. to EN(H4DOTC)(diag)-43, PROCE-
DURE, Inspection Mode.>.
WIRING DIAGRAM:
MAIN RELAY
21
22
23
24
B220
B72 B21
1 2 3
1 2 3 4 5 6 7 8
4 5 6
12 13 14 15 16 17 18 19
23 24 25 26 27 28 29 30 31 32 33
34 35 36 37
42 43 44 45
48 49 50 51
No.12
A: B134
B: B135
ECM
C: B136
D: B137
B21
E2
E
9 10 11 1 2 9
20 21 22
10
3 4
11 12
5 6
38 39 40 41
7 8 25
46 47
26
52 53 54
27 28
EN(H4DOTC)(diag)-245
FUSE
B220
(RELAY BLOCK)
15A
4 3
IGNITION
B72
SWITCH
SBF-6
1 3
B220 A:
1 2 3
13 17 21
8 9 10 11 12 13 14 15
14 18 22
18 19 20 21 22 23
15 16 19 20 23 24
28 29 30 31 32
29 33 37
30 34 38
C: B136
31 32 35 36 39 40
1 2 3 4
7 8 9 10 11 12 13 14 15
17 18 19 20 21 22 23
28 29 30 31
ENGINE (DIAGNOSTICS)
SBF-7
No.13
BATTERY
MAIN SBF
B134 B: B135
4 5 6 7 1 2 3
16 17 8 9 10 11 12 13 14 15
24 25 26 27 20 21 22 23 24
33 34
28 29 30 31 32 33
D: B137
5 6
1 2 3 4 5 6
16
8 9 10 11 12 13 14 15
24 25 26 27 18 19 20 21 22 23
32 33 34 35 26 27 28 29
E
4 5 6 7
16 17 18 19
25 26 27
34 35
7
16 17
24 25
30 31
EN-06131