Subaru LEGACY 2006 Manual page 3592

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Diagnostic Procedure with Diagnostic Trouble Code (DTC)
AH:DTC P1706 AT VEHICLE SPEED SENSOR CIRCUIT MALFUNCTION (REAR
WHEEL)
DTC DETECTING CONDITION:
Input signal circuit of TCM is open or shorted.
TROUBLE SYMPTOM:
• Shifting quality malfunction
• Tight corner braking phenomenon occurs.
WIRING DIAGRAM:
E
Step
1 CHECK TCM I/O SIGNAL.
Check I/O signal of power supply, ground and
PVIGN power supply relay. <Ref. to 5AT(diag)-
12, ELECTRICAL SPECIFICATION, Transmis-
sion Control Module (TCM) I/O Signal.>
TCM
A: B54 B: B55
A: B11
B: B12
REAR VEHICLE SPEED SENSOR
Is TCM I/O signal OK?
5AT(diag)-99
AUTOMATIC TRANSMISSION (DIAGNOSTICS)
A:
1 2 3 4
10 11 12 13 14 15 16 17 18
19 20 21
B:
1 2 3 4
10 11 12 13
19 20 21
A:
1 2
5
9 10
13
17 18
B:
Check Yes
Go to step 2.
B54
5 6 7 8 9
22 23 24
B55
5 6 7 8 9
14 15 16 17 18
22 23 24
B11
3 4
6 7 8
11 12
14 15 16
19 20
B12
1 2 3 4
5 6 7 8
AT-03298
No
Repair the open or
short circuit for
power supply and
ground. Perform
the diagnosis
according to DTC
P0882 for PVIGN
power supply
relay.