Subaru 2009 IMPREZA, Service Manual

Page: 1904 / 3619

4AT-48
Inhibitor Switch
AUTOMATIC TRANSMISSION
13.Inhibitor Switch
A: INSPECTION
When the driving condition or starter motor opera-
tion is improper, first check the shift linkage for im-
proper operation. If the shift linkage is functioning
properly, check the inhibitor switch.
1) Disconnect the inhibitor switch connector.
2) Check continuity in inhibitor switch circuits with
the select lever moved to each position.
NOTE:
• Also check that there is no continuity in the igni-
tion circuit when the select lever is in the “R” and
“D” ranges.
• If the inhibitor switch does not operate, check for
poor contact of the connector on transmission side.
3) Check that there is continuity at equal points
when the select lever is moved 1.5° in both direc-
tions from the “N” range.
If there is continuity in only one direction or in other
points, adjust the inhibitor switch. <Ref. to 4AT-48,
ADJUSTMENT, Inhibitor Switch.>
4) Repeat the above inspection in other gear rang-
es. If there are abnormalities, adjust the select ca-
ble. <Ref. to CS-27, ADJUSTMENT, Select
Cable.>
B: ADJUSTMENT
1) Set the select lever to “N” range.
2) Loosen the two bolts holding the inhibitor switch.
3) Insert the ST as vertical as possible into the
holes of the shifter arm and switch body.
ST
499267300 STOPPER PIN
4) Tighten the two bolts holding the inhibitor switch.
Tightening torque:
5 N·m (0.5 kgf-m, 3.7 ft-lb)
5) Repeat the inspection of the inhibitor switch. If
the inhibitor switch is determined to be “faulty”, re-
place it.
Signal sent to TCM
Range Pin No.
P 4 — 3
R 4 — 2
N 4 — 1
D 4 — 8
Ignition circuit P/N 12 — 11
Back-up light circuit R 10 — 9
(A) Inhibitor switch connector
AT-00030
( 4 ) ( 3 ) ( 2 ) ( 1 )
( 5 ) ( 6 ) ( 7 ) ( 8 )
( 9 ) (10)
(11) (12)
(A)
(A) Continuity does not exist.
(B) Continuity exists.
(C) 1.5°
AT-04578
(A)
(A)
(C)
(B)
AT-04866
S T