Subaru LEGACY 2006 Manual page 3482

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Diagnostic Procedure without Diagnostic Trouble Code (DTC)
AUTOMATIC TRANSMISSION (DIAGNOSTICS)
Step
16 CHECK SPORT SHIFT SWITCH.
1) Shift and hold the select lever to down side.
2) Measure the resistance between SPORT
shift switch terminals.
Connector & terminal
(B116) No. 10 — No. 11:
17 CHECK HARNESS CONNECTOR BETWEEN
BODY INTEGRATED UNIT AND SPORT
SHIFT SWITCH.
1) Disconnect the connector from body inte-
grated unit.
2) Measure the resistance of harness
between body integrated unit connector and
SPORT shift switch connector.
Connector & terminal
(B116) No. 11 — (B281) No. 25:
18 CHECK HARNESS CONNECTOR BETWEEN
BODY INTEGRATED UNIT AND SPORT
SHIFT SWITCH.
Measure the resistance of harness between
SPORT shift switch connector and chassis
ground.
Connector & terminal
(B116) No. 11 — Chassis ground:
19 CHECK INPUT SIGNAL TO BODY INTE-
GRATED UNIT.
1) Connect all connectors.
2) Turn the ignition switch to ON (engine
OFF).
3) Check the signal voltage for body inte-
grated unit.
Connector & terminal
(B281) No. 25 (+) — Chassis ground (–):
20 CHECK INPUT SIGNAL TO BODY INTE-
GRATED UNIT.
1) Shift and hold the select lever to down side.
2) Check the signal voltage for body inte-
grated unit.
Connector & terminal
(B281) No. 25 (+) — Chassis ground (–):
21 CHECK POOR CONTACT.
Check
Is the resistance less than 1
Ω?
Is the resistance less than 1
Ω?
Is the resistance more than 1
MΩ?
Is the voltage 1.5 — 8 V?
Is the voltage less than 1 V?
Is there poor contact in the
SPORT shift switch circuit?
4AT(diag)-96
Yes No
Go to step 17. Replace the guide
plate assembly.
Go to step 18. Repair the open
circuit of harness
between SPORT
shift switch con-
nector and TCM
connector, or poor
contact in connec-
tor.
Go to step 19. Repair the short
circuit of harness
between SPORT
shift switch con-
nector and TCM
connector.
Go to step 20. Go to step 21.
Go to step 21. Replace the body
integrated unit.
<Ref. to 4AT-62,
Transmission Con-
trol Module
(TCM).>
Repair the poor A temporary poor
contact. contact of the
SPORT shift
switch circuit con-
nector or harness.