Subaru 2002 IMPREZA Service Manual page 698

DIAGNOSTIC PROCEDURE WITH DIAGNOSTIC TROUBLE CODE (DTC)
ENGINE (DIAGNOSTICS)
BY: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-49, OPERATION,
Clear Memory Mode.> and Inspection Mode <Ref. to EN-42, OPERATION, Inspection Mode.> .
• WIRING DIAGRAM:
A: B134
B:
B135
C:
B136
F44
1 2 3 4
5 6 7 8
A: B134
1 2 3 4 5 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
Step
1 CHECK INPUT SIGNAL FOR ECM.
1)Turn the ignition switch to OFF.
2)Measure the voltage between ECM and
chassis ground.
Connector & terminal
(B136) No. 9 (+) — Chassis ground ( − − − − ):
LHD LHD
2
B61 F44
ECM
B22
E3
B22
1 2
1 2 3 4
8 9
5 6 7 8
20 21
9 10 11 12
13 14 15 16
7 8
34 35
BATTERY
SBF-5
1 AT MODEL : B6
MT MODEL : B25
B:
B135
3 4 5 6 7 1
10 11 12 13 14 15 16 17 18 19 8
22 23 24 25 26 27 28 21
Check
Is the voltage more than 10 V? Repair the poor
EN-266
C: B136
2 3 4 5 6 7
9 10 11 12 13 14 15 16 17 18 19 20
22 23 24 25 26 27 28 29 30
Yes
Go to step 2.
contact in ECM
connector.
EN1420
No