Subaru Legacy 2004 Service Manual page 940

Diagnostic Procedure with Diagnostic Trouble Code (DTC)
AV:DTC P0604 INTERNAL CONTROL MODULE READ ACCESS MEMORY
(RAM) ERROR
DTC DETECTING CONDITION:
Immediately at fault recognition.
TROUBLE SYMPTOM:
• Engine does not start.
• Engine stalls.
CAUTION:
After repair or replacement of faulty parts, conduct Clear Memory Mode <Ref. to EN(H4SO 2.5)(diag)-
41, Clear Memory Mode.> and Inspection Mode <Ref. to EN(H4SO 2.5)(diag)-34, Inspection Mode.>.
WIRING DIAGRAM:
• EC, EK and K4 model
MAIN RELAY
3
5
6
4
*
3
*
4
B47
B72 B47
1 2
1 2 3
1 2 3 4
3 4
4 5 6
12 13 14 15
5 6
23 24 25 26 27 28 29 30 31 32 33
34
42
48
• 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.
TO IGNITION COIL
No.12
A:
B134
B: B135
ECM
D: B137
B21
E2
E
B21
5 6 7 8 9 10 11
16 17 18 19 20 21 22
35 36 37 38 39 40 41
43 44 45 46 47
49 50 51 52 53 54
EN(H4SO 2.5)(diag)-181
IGNITION
B72
SWITCH
SBF-7
6 3
*
1
: WITH IMMOBILIZER: D16
WITHOUT IMMOBILIZER: D17
*
2 : WITH IMMOBILIZER: D14
WITHOUT IMMOBILIZER: D15
*
3
: LHD MODEL: 1
RHD MODEL: 2
*
4 : LHD MODEL: 2
RHD MODEL: 1
A: B134
1 2 3 4 5 6 7 1
8 9 10 11 12 13 14 15 16 17 8 9
18 19 20 21 22 23 24 25 26 27 20 21
28 29 30 31 32 33 34 28 29 30 31
ENGINE (DIAGNOSTICS)
SBF-8
No.13
BATTERY
SBF-1
B: B135
2 3 4 5 6 7 1 2
10 11 12 13 14 15 16 17 18 19 8 9
22 23 24 25 26 27 18 19 20 21
32 33 34 35 26 27
E
D: B137
3 4 5 6 7
10 11 12 13 14 15 16 17
22 23 24 25
28 29 30 31
EN-02456