Subaru LEGACY 2006 Manual page 3448

asieps_tobira.book 62 ページ ２００９年１０月２６日 月曜日 午前９時１６分
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
AUTOMATIC TRANSMISSION (DIAGNOSTICS)
R: DTC P0758 SHIFT SOLENOID "B" ELECTRICAL
DTC DETECTING CONDITION:
Output signal circuit of 2-4 brake 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. 6 — (B11) No. 3:
2 CHECK HARNESS CONNECTOR BETWEEN
TCM AND CHASSIS GROUND.
Measure the resistance of the harness
between TCM connector and chassis ground.
Connector & terminal
(B55) No. 6 — Chassis ground:
3 CHECK 2-4 BRAKE DUTY SOLENOID.
Measure the resistance between transmission
connector terminals.
Connector & terminal
(T4) No. 3 — No. 20:
B55 TCM
B11
T4
AT12
2-4 BRAKE
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)-62
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-03414
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.