Subaru 2009 IMPREZA Service Manual page 2057

Diagnostic Procedure with Diagnostic Trouble Code (DTC)
AUTOMATIC TRANSMISSION (DIAGNOSTICS)
V: DTC P1707 AT AWD SOLENOID VALVE CIRCUIT MALFUNCTION
DTC DETECTING CONDITION:
Output signal circuit of transfer duty solenoid is open or shorted.
TROUBLE SYMPTOM:
• Tight corner braking phenomenon occurs.
• Front wheel slips on the slippery road.
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 connector and transmission connector.
Connector & terminal
(B55) No. 5 — (B11) No. 8:
2 CHECK HARNESS CONNECTOR BETWEEN
TCM AND TRANSMISSION.
Measure the resistance of harness connector
between TCM and chassis ground.
Connector & terminal
(B55) No. 5 — Chassis ground:
3 CHECK TRANSFER DUTY SOLENOID.
Measure the resistance between transmission
connector and transmission terminals.
Connector & terminal
(T4) No. 8 — No. 20:
TCM
B55
B11
T4
AT 2
TRANSFER
DUTY
SOLENOID
CONTROL VALVE BODY
4AT(diag)-72
Check
Is the resistance less than 1 ? Go to step 2.
Is the resistance 1 M or
more?
Is the resistance 2.0 — 6.0 ? Go to step 4.
AT2
1 2 3 4 5
6
7 8 9 10
B11
3 4
1 2
6 7 8
5
9 11 12
10
14 15
13 16
17 18 19 20
B55
1 2 3 4 5
7 8 9 10 11 12 13 14 15
17 18 19 20 21 22 23 24 25
28 29 30 31 32 33 34
Yes No
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 7.
6
16
26 27
35
AT-04761