Subaru LEGACY 2006 Manual page 3644

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Diagnostic Procedure without Diagnostic Trouble Code (DTC)
AUTOMATIC TRANSMISSION (DIAGNOSTICS)
Step
18 CHECK HARNESS BETWEEN BODY INTE-
GRATED UNIT AND MANUAL MODE
SWITCH.
1) Disconnect the steering roll switch connec-
tor.
2) Measure the resistance of harness
between manual mode 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 up side.
2) Check the signal voltage for body inte-
grated unit.
Connector & terminal
(B281) No. 25 (+) — Chassis ground (–):
21 CHECK GROUND CIRCUIT OF STEERING
SHIFT SWITCH.
1) Turn the ignition switch to OFF.
2) Disconnect the connector from the steering
roll connector.
3) Measure the resistance of harness
between steering roll connector and chassis
ground.
Connector & terminal
(ST4) No. 3 — Chassis ground:
22 CHECK STEERING SHIFT SWITCH.
Measure the resistance between the ssteering
roll connector terminals.
Connector & terminal
(ST4) No. 2 — No. 3:
23 CHECK STEERING SHIFT SWITCH.
1) Shift and hold the steering shift switch to
the + side.
2) Measure the resistance between steering
shift switch terminals.
Connector & terminal
(ST4) No. 2 — No. 3:
24 CHECK HARNESS CONNECTOR BETWEEN
BODY INTEGRATED UNIT AND STEERING
ROLL CONNECTOR.
1) Disconnect the connector from body inte-
grated unit.
2) Measure the resistance of the harness
between body integrated unit connector and
steering roll connector.
Connector & terminal
(B281) No. 15 — (B68) No. 2:
Check
Is the resistance more than 1
MΩ?
Is the voltage more than 9 V?
Is the voltage less than 1 V?
Is the resistance less than 1
Ω?
Is the resistance more than 1
MΩ?
Is the resistance less than 1
Ω?
Is the resistance less than 1
Ω?
5AT(diag)-128
Yes No
Go to step 19. Repair the short
circuit of harness
between manual
mode switch con-
nector and body
integrated unit
connector.
Go to step 20. Replace the body
integrated unit.
<Ref. to SL-55,
Body Integrated
Unit.>
Go to step 21. Replace the body
integrated unit.
<Ref. to SL-55,
Body Integrated
Unit.>
Go to step 22.
Repair the open
circuit of harness
between steering
roll connector and
chassis ground.
Go to step 23. Replace the steer-
ing roll connector
or the steering
shift switch. Repair
the poor contact of
connector.
Go to step 24. Replace the steer-
ing roll connector
or the steering
shift switch. Repair
the poor contact of
connector.
Go to step 25. Repair the open
circuit of harness
between the body
integrated unit
connector and
steering roll con-
nector, or poor
contact of connec-
tor.