Subaru Legacy (2005 year). Service manual — part 603
5AT(diag)-3
AUTOMATIC TRANSMISSION (DIAGNOSTICS)
Basic Diagnostic Procedure
6
PERFORM DIAGNOSIS.
1) Inspect using the “Diagnostic Procedure
with Diagnostic Trouble Code (DTC)”. <Ref. to
5AT(diag)-35, Diagnostic Procedure with Diag-
nostic Trouble Code (DTC).>
NOTE:
For DTC table, refer to “List of Diagnostic Trou-
ble Code (DTC)”. <Ref. to 5AT(diag)-31, List of
Diagnostic Trouble Code (DTC).>
2) Repair the trouble cause.
3) Perform the clear memory mode.
4) Perform the inspection mode. <Ref. to
5AT(diag)-21, Inspection Mode.>
5) Display DTC.
Is DTC displayed on the Sub-
aru Select Monitor?
Inspect using the
“Diagnostic Proce-
dure with Diagnos-
tic Trouble Code
(DTC)”. <Ref. to
5AT(diag)-35,
Diagnostic Proce-
dure with Diagnos-
tic Trouble Code
(DTC).>
Inspect using
“General Diagnos-
tic Table”. <Ref. to
5AT(diag)-137,
General Diagnos-
tic Table.>
Step
Check
Yes
No
5AT(diag)-4
AUTOMATIC TRANSMISSION (DIAGNOSTICS)
Check List for Interview
2. Check List for Interview
A: CHECK
Check the following items when problem has occurred.
NOTE:
Use copies of this page for interviewing customers.
Customer’s name
Date of sale
Date of repair
Trans. model
TRANSMISSION
V.I.N.
Odometer reading
km (miles)
Symptom
❏ No up-shift
❏ No down-shift
❏ No kick down
❏ Vehicle does not move (❏ Any position ❏ Particular position)
❏ Lock-up malfunction
❏ Noise or vibration
❏ Shift shock or slip
❏ Select lever does not move
❏ Others
(
)
Frequency
❏ Continuous ❏ Intermittent (
times a day)
Weather
❏ Fine ❏ Cloudy ❏ Rainy ❏ Snowy
❏ Others
(
)
Place
❏ Highland ❏ Suburbs ❏ Inner city ❏ Uphill ❏ Rough road
❏ Others
(
)
Ambient air temperature
❏ Hot ❏ Warm ❏ Cool ❏ Cold
Vehicle speed
km/h (MPH)
AT warning light (SPORT indicator
light)
❏ Blinks continuously
❏ Not blink
Select lever position
❏ P ❏ R ❏ N ❏ D ❏ Manual mode
Driving condition
❏ Not affected
❏ At racing
❏ When decelerating
❏ At starting
❏ When accelerating
❏ While turning (❏ RH/❏
LH)
❏ While idling
❏ While cruising
Manual mode
❏ ON ❏ OFF
5AT(diag)-5
AUTOMATIC TRANSMISSION (DIAGNOSTICS)
General Description
3. General Description
A: CAUTION
• Supplemental Restraint System “Airbag”
The airbag system wiring harness is routed near
the TCM.
CAUTION:
• All the airbag system wiring harnesses and
connectors are colored yellow. Do not use an
electric test equipment on these circuits.
• Be careful not to damage the airbag system
wiring harness when performing diagnostics or
servicing the TCM.
• Measurement
When measuring the voltage and resistance of the
ECM, TCM or each sensor, use a tapered pin with
a diameter of less than 0.64 mm (0.025 in) in order
to avoid poor contact. Do not insert a pin of more
than 0.65 mm (0.026 in) diameter.
B: INSPECTION
1. BATTERY
Measure the battery voltage and specific gravity of
electrolyte.
Standard voltage: 12 V or more
Specific gravity: 1.260 or more
2. TRANSMISSION GROUND
Make sure that the ground terminal bolt is tightened
securely.
• Chassis side
Tightening torque:
13 N
⋅
m (1.3 kgf-m, 9.4 ft-lb)
3. ATF LEVEL
Make sure that ATF level is the specified amount.
<Ref. to 5AT-28, INSPECTION, Automatic Trans-
mission Fluid.>
4. FRONT DIFFERENTIAL OIL LEVEL
Make sure the front differential oil level is the spec-
ified amount. <Ref. to 5AT-30, INSPECTION, Dif-
ferential Gear Oil.>
AT-01464
(A) Level gauge
(B) Check position when “HOT”
(C) Upper level
(D) Lower level
(E) Check position when “COLD”
(A) Upper level
(B) Lower level
AT-01450
COLD
LF
HOT
LF
(C)
(D)
(C)
(D)
(E)
(B)
(A)
AT-00317
(A)
(B)
L
F
5AT(diag)-6
AUTOMATIC TRANSMISSION (DIAGNOSTICS)
General Description
5. OPERATION OF SHIFT SELECT LEVER
Make sure there is no noise, dragging or contact
pattern in each select lever range.
WARNING:
Stop the engine while checking operation of the
select lever.
• LHD model
• RHD model
C: PREPARATION TOOL
1. SPECIAL TOOL
2. GENERAL TOOL
AT-02048
AT-01465
ILLUSTRATION
TOOL NUMBER
DESCRIPTION
REMARKS
18482AA000
(Newly adopted tool)
CARTRIDGE
Troubleshooting for electrical system.
22771AA030
SUBARU SELECT
MONITOR KIT
Troubleshooting for electrical system.
• English: 22771AA030 (Without printer)
• German: 22771AA070 (Without printer)
• French: 22771AA080 (Without printer)
• Spanish: 22771AA090 (Without printer)
TOOL NAME
REMARKS
Circuit tester
Used for measuring resistance, voltage and current.
Oscilloscope
Used for measuring sensor.
ST18482AA000
ST22771AA030
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