Subaru Legacy (2005 year). Service manual — part 611
5AT(diag)-35
AUTOMATIC TRANSMISSION (DIAGNOSTICS)
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
14.Diagnostic Procedure with Diagnostic Trouble Code (DTC)
A: DTC P0705 TRANSMISSION RANGE SENSOR CIRCUIT (PRNDL INPUT)
DTC DETECTING CONDITION:
The inhibitor switch is open or short.
TROUBLE SYMPTOM:
• Shift characteristics are erroneous.
• Shift indicator light does not match with select lever.
• Shift indicator light does not illuminate.
• N-D, N-R shock occur.
5AT(diag)-36
AUTOMATIC TRANSMISSION (DIAGNOSTICS)
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
WIRING DIAGRAM:
AT-03174
3
4
21
1
22
7
P
R
N
D
i10
i77
i10
i77
i84
B280
B12
i84
A:
B280
B:
2
8
A27
A26
B20
B30
2
1
3 4
6 7 8 9 10
22
21
20
19
18
17
16
15
14
13
12
11
5
12
11
10
9
8
7
6
5
4
3
2
1
8
7
6
5
4
3
2
1
22 23
21
20
19
16
15
14
13
12
11
10
9
34 35
33
32
17
30
18
31
29
28
27
26
25
24
8
7
6
5
4
3
2
1
22
23
21
20
19
16
15
14
13
12
11
10
9
17
30
18
29
28
27
26
25
24
MAIN SBF
SBF-6
No.5
E
B
A
TTER
Y
COMBINATION
METER
JOINT
CONNECTOR
BODY INTEGRATED MODULE
TRANSMISSION
A:
B:
1 2 3 4
10 11 12
19 20 21
13
5 6
14 15
7
8
9
16
17
18
22
23
24
B54
B55
1 2
7
8
9
5 6
3 4
10 11 12
19 20 21
13
14 15
16
17
18
22
23
24
A4
A3
B3
B13
B20
B4
B14
3
1
4
2
8
TCM
B54
A:
B55
B:
B12
T3
E
A:
B:
1 2 3 4
5 6 7 8
5AT(diag)-37
AUTOMATIC TRANSMISSION (DIAGNOSTICS)
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
Step
Check
Yes
No
1
CHECK DTC OF TCM.
Is DTC of AT CAN communica-
tion circuit displayed?
Perform the diag-
nosis according to
DTC.
2
CHECK INHIBITOR SWITCH.
1) Shift the select lever to “P” range.
2) Check input signal of inhibitor SW 1 — 4
and inhibitor SW 3 monitor using Subaru
Select Monitor.
Are all indications High?
3
CHECK HARNESS CONNECTOR BETWEEN
TCM AND TRANSMISSION.
1) Turn the ignition switch to OFF.
2) Disconnect the connectors from TCM and
transmission.
3) Measure the resistance between TCM con-
nector and chassis ground about the item
which indicated Low on step 2.
Connector & terminal
(B55) No. 4 — Chassis ground:
(B55) No. 3 — Chassis ground:
(B55) No. 14 — Chassis ground:
(B55) No. 13 — Chassis ground:
(B55) No. 20 — Chassis ground:
Is the resistance more than 1
M
Ω?
Repair the short
circuit of harness
between TCM con-
nector and chassis
ground.
4
CHECK INHIBITOR SWITCH.
1) Shift the select lever to “D” range.
2) Check input signal of inhibitor SW 1 — 4
and inhibitor SW 3 monitor using Subaru
Select Monitor.
Are all indications Low?
5
CHECK HARNESS CONNECTOR BETWEEN
TCM AND TRANSMISSION.
1) Turn the ignition switch to OFF.
2) Disconnect the connectors from TCM and
transmission.
3) Measure the resistance of harness
between TCM and transmission connector
about the item which indicated High on step 4.
Connector & terminal
(B55) No. 4 — (B12) No. 4:
(B55) No. 3 — (B12) No. 3:
(B55) No. 14 — (B12) No. 2:
(B55) No. 13 — (B12) No. 1:
(B55) No. 20 — (B12) No. 8:
Is the resistance less than 1
Ω?
Repair the open
circuit of harness
between TCM con-
nector and trans-
mission connector.
6
CHECK INPUT SIGNAL FOR TCM USING
CIRCUIT TESTER.
1) Turn the ignition switch to OFF.
2) Disconnect the transmission connector
(B12).
3) Connect the TCM connector.
4) Turn the ignition switch to ON.
5) Measure the voltage between TCM termi-
nals.
Connector & terminal
(B55) No. 4 — (B54) No. 19:
(B55) No. 3 — (B54) No. 19:
(B55) No. 14 — (B54) No. 19:
(B55) No. 13 — (B54) No. 19:
(B55) No. 20 — (B54) No. 19:
Is the voltage 4 — 6 V for the
inhibitor SW 1 — 4? / Is the
voltage 3.5 — 5.5 V for the
inhibitor SW 3 monitor?
5AT(diag)-38
AUTOMATIC TRANSMISSION (DIAGNOSTICS)
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
7
CHECK TCM I/O SIGNAL.
Check I/O signal of power supply, ground and
PVIGN power supply relay.
<Ref. to 5AT(diag)-13, ELECTRICAL SPECIFI-
CATION, Transmission Control Module (TCM)
I/O Signal.>
Is TCM I/O signal OK?
Replace the TCM.
<Ref. to 5AT-61,
Transmission Con-
trol Module
(TCM).>
Repair the open or
short circuit for
power supply and
ground. Perform
the diagnosis
according to DTC
for PVIGN power
supply relay.
8
CHECK HARNESS CONNECTOR BETWEEN
TRANSMISSION AND CONTROL VALVE
BODY.
1) Turn the ignition switch to OFF.
2) Disconnect the connector from transmis-
sion.
3) Remove the transmission connector from
bracket.
4) Jack-up the vehicle and place it on rigid
racks.
NOTE:
Raise all wheels off floor.
5) Drain the ATF.
CAUTION:
Do not drain the ATF until it cools down.
6) Remove the oil pan, and disconnect the
connector from control valve body connector.
7) Measure the resistance between transmis-
sion connector and control valve body connec-
tor.
Connector & terminal
(T3) No. 4 — (T10) No. 6:
(T3) No. 3 — (T10) No. 5:
(T3) No. 2 — (T10) No. 4:
(T3) No. 1 — (T10) No. 3:
(T3) No. 8 — (T10) No. 2:
Is the resistance less than 1
Ω?
Repair the open
circuit of harness
between control
valve body con-
nector and trans-
mission connector.
9
CHECK HARNESS CONNECTOR BETWEEN
TRANSMISSION AND CONTROL VALVE
BODY.
Measure the resistance between transmission
ground and control valve body connector.
Connector & terminal
(T10) No. 6 — Transmission ground:
(T10) No. 5 — Transmission ground:
(T10) No. 4 — Transmission ground:
(T10) No. 3 — Transmission ground:
(T10) No. 2 — Transmission ground:
Is the resistance more than 1
M
Ω?
Repair the short
circuit of harness
between control
valve body con-
nector and trans-
mission connector.
10
CHECK POOR CONTACT.
Is there any poor contact in
inhibitor SW 1 — 4 or inhibitor
SW 3 monitor circuit?
Repair the poor
contact.
Replace the con-
trol valve body.
<Ref. to 5AT-58,
Control Valve
Body.>
Step
Check
Yes
No
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст