Subaru Legacy 2004 Service Manual page 1445

Diagnostic Procedure with Diagnostic Trouble Code (DTC)
ENGINE (DIAGNOSTICS)
BE:DTC P1518 STARTER SWITCH CIRCUIT LOW INPUT
DTC DETECTING CONDITION:
Two consecutive driving cycles with fault
TROUBLE SYMPTOM:
Failure of engine to start
CAUTION:
After repair or replacement of faulty parts, conduct Clear Memory Mode <Ref. to EN(H4DOTC)(diag)-
30, OPERATION, Clear Memory Mode.> and Inspection Mode <Ref. to EN(H4DOTC)(diag)-28, PROCE-
DURE, Inspection Mode.>.
WIRING DIAGRAM:
B135
B: D:
B225
9
1 2 13
10 14
3 4
11 12 15 16
5 6
7 8
25 29
26 30
27 28 31 32
No.21
2
IGNITION
B72
SWITCH
STARTER RELAY
B225
STARTER MOTOR
B14
B137 ECM
17 21
18 22
1 2
19 20 23 24
8 9 10 11 12
20 21 22 23
28 29 30 31
33 37
34 38
35 36 39 40
EN(H4DOTC)(diag)-156
SBF-7 SBF-1
3
M
B: B135
3 1
4 5 6 7
13 14 15 16 17 18 19 8 9
24 25 26 27 18
32 33 34 35 26
BATTERY
E
B137
D:
2 3
4 5 6 7
10 11 12 13 14 15 16 17
19 20 21 22 23 24 25
27 28 29 30 31
B72
1 2 3
4 5 6
EN-02402