Subaru LEGACY 2006 Manual page 3621

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AUTOMATIC TRANSMISSION (DIAGNOSTICS)
1. Basic Diagnostic Procedure
A: PROCEDURE
Step
1 CHECK PRE-INSPECTION.
1) Ask the customer when and how the trou-
ble occurred using the interview checklist.
<Ref. to 5AT(diag)-4, Check List for Interview.>
2) Before performing diagnosis, inspect the
following items which may influence AT prob-
lems.
• General Inspection <Ref. to 5AT(diag)-5,
INSPECTION, General Description.>
• Oil leakage
• Stall speed test <Ref. to 5AT-30, Stall Test.>
• Line pressure test <Ref. to 5AT-32, Line
Pressure Test.>
• Transfer Clutch Pressure Test <Ref. to 5AT-
33, Transfer Clutch Pressure Test.>
• Time Lag Test <Ref. to 5AT-31, Time Lag
Test.>
• Road Test <Ref. to 5AT-29, Road Test.>
• Inhibitor Switch <Ref. to 5AT-46, Inhibitor
Switch.>
2 CHECK SPORT INDICATOR LIGHT.
After the ignition switch is turned to ON, wait
for at least 2 seconds.
3 CHECK SPORT INDICATOR LIGHT.
1) Turn the ignition switch to OFF.
2) Check the SPORT indicator light. <Ref. to
5AT(diag)-24, INSPECTION, SPORT Indicator
Light Display.>
3) After the ignition switch is turned to ON,
wait for at least 2 seconds.
4 CHECK DTC.
Read the DTC. <Ref. to 5AT(diag)-19, OPERA-
TION, Read Diagnostic Trouble Code (DTC).>
NOTE:
If the communication function of Subaru Select
Monitor cannot be executed normally, check
the communication circuit. <Ref. to 5AT(diag)-
26, COMMUNICATION FOR INITIALIZING IM-
POSSIBLE, Diagnostic Procedure for Subaru
Select Monitor Communication.>
5 PERFORM GENERAL DIAGNOSTICS.
1) Inspect using "Diagnostic Procedure with-
out Diagnostic Trouble Code (DTC)". <Ref. to
5AT(diag)-125, Diagnostic Procedure without
Diagnostic Trouble Code (DTC).>
2) Perform the Clear Memory Mode.
3) Perform the Inspection Mode. <Ref. to
5AT(diag)-20, Inspection Mode.>
4) Display the DTC.
Basic Diagnostic Procedure
Check
Is the unit that is thought to
influence the AT problem work-
ing properly?
Does the SPORT indicator
light illuminate?
Does the SPORT indicator
light blink?
Is DTC displayed?
Is DTC displayed?
5AT(diag)-2
Yes No
Go to step 2. Repair or replace
each item.
Go to step 4. Go to step 3.
Go to step 4. Go to step 5.
Go to step 6. Go to step 5.
NOTE:
Record all DTC.
Go to step 6. Inspect using
"General Diagnos-
tic Table". <Ref. to
5AT(diag)-134,
General Diagnos-
tic Table.>