Subaru Impreza 2004 - Page 559

EN(H4SO)(diag)-250
ENGINE (DIAGNOSTICS)
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
CP:DTC P1560 BACK-UP VOLTAGE CIRCUIT MALFUNCTION
• DTC DETECTING CONDITION:
• Immediately at fault recognition
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:
Step Check Yes No
1 CHECK INPUT SIGNAL FOR ECM.
1)Turn the ignition switch to OFF.
2)Measure the voltage between ECM and
chassis ground.
Connector & terminal
(B135) No. 9 (+) — Chassis ground (
−
−−
−
):
Is the voltage more than 10 V? Repair poor con-
tact in ECM con-
nector.
Go to step 2.
EN-01444
B72
34
12
BATTERY
IGNITION
SWITCH
MAIN RELAY
SBF-4 SBF-1
SBF-5
B72
B2 B1
C12
C16
B21
C5
A35
A7
C26 D14
B9
C10 C23
B47
E3
B22
1
2
3
5
6
4
ECM
E
E
14
B134
B135
B136
A :
C :
D :
B137
B :
C19
8
15
16 14 13
E
34
12
56
123
4
56
7
8
9
10
11 12
13
14 15 16
B137
B135
B22B47
MT
F44
B134
123
4
5 6 7 8
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
567
8
21
9
4
3
10
2422 23 25
11 12 13 14 15
26 27
28
16
17 18 19
20 21
4
1
5
3
2
6
1815 16
7 8 9 10 11
17 19
20
12
13
14
B136
5
2
8
4
3
9
2320 21
10 11
22
16
17
24
25
12
13
6
26
19
15
14
1
7
18
No.11
B61 F44
2
LHD
RHD
RHD
LHD