Subaru Legacy III (2000-2003 year). Service manual — part 367
EN(H6DO)-270
ENGINE (DIAGNOSTICS)
DIAGNOSTIC PROCEDURE WITH DIAGNOSTIC TROUBLE CODE (DTC)
BP:DTC P0565 — CRUISE CONTROL ON SIGNAL —
• DTC DETECTING CONDITION:
• Two consecutive driving cycles with fault
CAUTION:
After repair or replacement of faulty parts, conduct Clear Memory Mode <Ref. to EN(H6DO)-54, OP-
ERATION, Clear Memory Mode.> and Inspection Mode <Ref. to EN(H6DO)-47, OPERATION, Inspec-
tion Mode.>.
• WIRING DIAGRAM:
EN-01096
B94
1 2 3 4 5 6 7 8 9 10
11 12 13 14 15 16 17 18 19 20
CCM
3
22
B94
B55
TCM
B55
1 2 3 4
10 11 12
19 20 21
13
5 6
14 15
7
8
9
16
17
18
22
23
24
EN(H6DO)-271
ENGINE (DIAGNOSTICS)
DIAGNOSTIC PROCEDURE WITH DIAGNOSTIC TROUBLE CODE (DTC)
Step
Value
Yes
No
1
CHECK HARNESS BETWEEN TCM AND
CCM CONNECTOR.
1) Turn ignition switch to OFF.
2) Disconnect connectors from TCM and
CCM.
3) Measure resistance of harness between
TCM and CCM connector.
Connector & terminal
(B55) No. 22 — (B94) No. 3:
Is the measured value less than the speci-
fied value?
1
Ω
Repair open circuit
in harness
between TCM and
CCM connector.
2
CHECK HARNESS BETWEEN TCM AND
CCM CONNECTOR.
Measure resistance of harness between TCM
and chassis ground.
Connector & terminal
(B55) No. 22 — Chassis ground:
Is the measured value less than the specified
value?
10
Ω
Repair short circuit
in harness
between TCM and
CCM connector.
3
CHECK INPUT SIGNAL FOR TCM.
1) Connect connector to TCM and CCM.
2) Lift-up the vehicle or set the vehicle on free
rollers.
CAUTION:
On AWD models, raise all wheels off
ground.
3) Start the engine.
4) Cruise control main switch to ON.
5) Move selector lever to “D” and slowly
increase vehicle speed to 50 km/h (31
MPH).
6) Cruise control command switch to ON.
7) Measure voltage between TCM and chas-
sis ground.
Connector & terminal
(B55) No. 22 (+) — Chassis ground (
−−−−
):
Is the measured value less than the speci-
fied value?
1 V
Check cruise con-
trol command
switch circuit.
<Ref. to CC-8,
Cruise Control
Command
Switch.>
4
CHECK POOR CONTACT.
Check poor contact in TCM connector.
Is there poor contact in TCM connector?
There is poor contact.
Repair poor con-
tact in TCM con-
nector.
Replace TCM.
<Ref. to AT-76,
Transmission Con-
trol Module
(TCM).>
EN(H6DO)-272
ENGINE (DIAGNOSTICS)
DIAGNOSTIC PROCEDURE WITH DIAGNOSTIC TROUBLE CODE (DTC)
BQ:DTC P0604 — INTERNAL CONTROL MODULE RANDOM 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(H6DO)-54, OP-
ERATION, Clear Memory Mode.> and Inspection Mode <Ref. to EN(H6DO)-47, OPERATION, Inspec-
tion Mode.>.
• WIRING DIAGRAM:
EN-01083
D10
A14
D2
A2
D3
E49
B252
D9
C8
D8
D31
D21
5
1
3
B47
BATTERY
MAIN RELAY
1
2
3
5
6
4
F44
B61
SBF-5
6
F46
B108
2
SBF-4
SBF-1
4
1
B72
IGNITION
SWITCH
ECM
B134
A:
B136
C:
B137
D:
A22
7
B137
B136
C:
D:
A: B134
B47
3
4
1
2
5
6
B72
F44
F46
3 4
1 2
B252
C18
C17
TO FRONT OXYGEN (A/F) SENSOR
6
1 2 3 4
5 6 7 8
3 4
1 2
1
2
7
8
9
5
6
3
4
10 11 12
19 20 21
29 30 31
13 14 15 16 17
27 28
18
22 23 24 25 26
1 2
7
8 9
5
6
3
4
10 11 12
19 20 21
13 14 15 16
17 18
22 23 24
1 2 3 4
10 11 12
19 20 21
13
5
6
14 15
7
8 9
16 17
18
22
1 2 3 4
5 6 7 8
LHD
RHD
RHD
RHD
RHD
LHD
LHD
LHD
EN(H6DO)-273
ENGINE (DIAGNOSTICS)
DIAGNOSTIC PROCEDURE WITH DIAGNOSTIC TROUBLE CODE (DTC)
Step
Value
Yes
No
1
CHECK ANY OTHER DTC ON DISPLAY.
Does the Subaru Select Monitor or OBD-II
general scan tool indicate DTC P0604?
DTC P0604 is indicated.
Replace ECM.
<Ref. to
FU(H6DO)-46,
Engine Control
Module.>
It is not necessary
to inspect DTC
P0604.
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