Subaru LEGACY 2006 Manual page 3451

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Diagnostic Procedure with Diagnostic Trouble Code (DTC)
S: DTC P0763 SHIFT SOLENOID "C" ELECTRICAL
DTC DETECTING CONDITION:
Output signal circuit of high clutch duty solenoid is open or shorted.
TROUBLE SYMPTOM:
Excessive shift shock
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 the harness
between TCM connector and transmission
connector.
Connector & terminal
(B55) No. 8 — (B11) No. 7:
2 CHECK HARNESS CONNECTOR BETWEEN
TCM AND TRANSMISSION.
Measure the resistance of the harness con-
nector between TCM connector and chassis
ground.
Connector & terminal
(B55) No. 8 — Chassis ground:
3 CHECK HIGH CLUTCH DUTY SOLENOID.
Measure the resistance between transmission
connector receptacle's terminals.
Connector & terminal
(T4) No. 7 — No. 20:
AUTOMATIC TRANSMISSION (DIAGNOSTICS)
B55 TCM
B11
T4
AT12
HIGHT
CLUTCH
DUTY
SOLENOID
TRANSMISSION
Check
Is the resistance less than 1
Ω?
Is the resistance more than 1
MΩ?
Is the resistance between 2.0
— 6.0 Ω?
4AT(diag)-65
B11
3 4
1 2
5 6 7 8
9 10 11 12
14 15
13 16
17 18 20
19
B55
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
AT12
1 2 3
4 5 6
AT-03415
Yes No
Go to step 2.
Repair the open
circuit of harness
between TCM and
transmission con-
nector.
Go to step 3. Repair the short
circuit of harness
between TCM and
transmission con-
nector.
Go to step 4. Go to step 7.