Subaru LEGACY 2006 Manual page 3481

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Diagnostic Procedure without Diagnostic Trouble Code (DTC)
Step
8 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. 7 — (B281) No. 15:
9 CHECK HARNESS CONNECTOR BETWEEN
TCM AND SPORT SHIFT SWITCH.
Measure the resistance of harness between
SPORT shift switch connector and chassis
ground.
Connector & terminal
(B116) No. 7 — Chassis ground:
10 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. 15 (+) — Chassis ground (–):
11 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. 15 (+) — Chassis ground (–):
12 CHECK THE BODY INTEGRATED UNIT.
1) Turn the ignition switch to ON.
2) Shift and hold the select lever to down side.
3) Read the "TIP DOWN SW" data of body
integrated unit using Subaru Select Monitor.
<Ref. to LAN(diag)-12, OPERATION, Subaru
Select Monitor.>
13 CHECK THE BODY INTEGRATED UNIT.
Check DTC of body integrated unit.
14 CHECK SPORT SHIFT SWITCH GROUND
CIRCUIT.
1) Turn the ignition switch to OFF.
2) Disconnect the connector from SPORT
shift switch.
3) Measure the resistance of harness
between SPORT shift switch connector and
chassis ground.
Connector & terminal
(B116) No. 10 (+) — Chassis ground:
15 CHECK SPORT SHIFT SWITCH.
Measure the resistance between SPORT shift
switch terminals.
Connector & terminal
(B116) No. 10 — No. 11:
AUTOMATIC TRANSMISSION (DIAGNOSTICS)
Check
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 ON displayed?
Is DTC of CAN communication
displayed?
Is the resistance less than 1
Ω?
Is the resistance more than 1
MΩ?
4AT(diag)-95
Yes No
Go to step 9. Repair the open
circuit of harness
between SPORT
shift switch con-
nector and TCM
connector, or poor
contact in connec-
tor.
Go to step 10. Repair the short
circuit of harness
between SPORT
shift switch con-
nector and TCM
connector.
Go to step 11.
Replace the body
integrated unit.
Go to step 21.
Replace the body
integrated unit.
Go to step 13. Go to step 14.
Perform the diag- Check the TCM.
nosis according to
DTC.
Go to step 15. Repair the open
circuit of harness
between SPORT
shift switch and
chassis ground.
Go to step 16. Replace the guide
plate assembly.