Subaru LEGACY 2006 Manual page 3561

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Diagnostic Procedure with Diagnostic Trouble Code (DTC)
AUTOMATIC TRANSMISSION (DIAGNOSTICS)
U: DTC P0758 SHIFT SOLENOID "B" ELECTRICAL
DTC DETECTING CONDITION:
Output signal circuit of input clutch solenoid is open or shorted.
TROUBLE SYMPTOM:
Locked to 4th gear.
WIRING DIAGRAM:
Step
1 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.
Connector & terminal
(B54) No. 18 — (B11) No. 18:
(B54) No. 5 — Chassis ground:
(B54) No. 14 — Chassis ground:
TCM
B54
E
B11
T4
T16
TRANSMISSION
Is the resistance less than 1
Ω?
5AT(diag)-68
1 2 3 4
10 11 12 13 14 15 16 17 18
19 20 21
1 2
5
9 10
13
17 18
1 2
5 6
Check Yes
Go to step 2.
B54
5 6 7 8 9
22 23 24
B11
3 4
6 7 8
11 12
14 15 16
19 20
T16
3 4
7 8 9 10 11 12
AT-03451
No
Repair the open
circuit of harness
between TCM and
transmission con-
nector.