4AT(diag)-2
Basic Diagnostic Procedure
AUTOMATIC TRANSMISSION (DIAGNOSTICS)
1. Basic Diagnostic Procedure
A: PROCEDURE
Step
Check
Yes
No
1
CHECK PRE-INSPECTION.
1) Ask the customer when and how the trouble
occurred using the interview check list. <Ref. to
4AT(diag)-4, Check List for Interview.>
2) Check the following items which may be
affecting the AT trouble.
• General inspection <Ref. to 4AT(diag)-5,
INSPECTION, General Description.>
• Disconnection of harness connector
• Visual check for harness damage
• Oil leakage
• Stall speed test <Ref. to 4AT-31, Stall Test.>
• Line pressure test <Ref. to 4AT-34, Line Pres-
sure Test.>
• Transfer clutch pressure test <Ref. to 4AT-35,
Transfer Clutch Pressure Test.>
• Time lag test <Ref. to 4AT-33, Time Lag
Test.>
• Road test <Ref. to 4AT-30, Road Test.>
• Inhibitor switch <Ref. to 4AT-48, Inhibitor
Switch.>
Is the item that might influence
the AT problem normal?
Go to step
3
.
Repair or replace
items which might
affect the AT prob-
lem.
2
CHECK ATF TEMPERATURE WARNING
LIGHT.
Turn the ignition switch to ON and wait for at
least 2 seconds.
Does the ATF temperature
warning light illuminate?
Go to step
3
.
Check the ATF
temperature warn-
ing light.
3
CHECK ATF TEMPERATURE WARNING
LIGHT.
Start the engine and wait for 2 seconds or more.
Is the ATF temperature warning
light blinking?
Go to step
4
.
Go to step
5
.
4
CHECK DTC.
Read the DTC.
NOTE:
If the communication function of Subaru Select
Monitor cannot be executed normally, check
communication circuit. <Ref. to 4AT(diag)-25,
COMMUNICATION FOR INITIALIZING IM-
POSSIBLE, Diagnostic Procedure for Subaru
Select Monitor Communication.>
Is DTC displayed on the Subaru
Select Monitor?
Go to step
6
.
NOTE:
Record all DTC.
Go to step
5
.
5
PERFORM GENERAL DIAGNOSTICS.
1) Inspect using “Diagnostic Procedure with-
out Diagnostic Trouble Code (DTC)”. <Ref. to
4AT(diag)-76, Diagnostic Procedure without
Diagnostic Trouble Code (DTC).>
2) Inspect using “Diagnostics with Phenome-
non”. <Ref. to 4AT(diag)-84, Diagnostics with
Phenomenon.>
3) Perform the Inspection Mode. <Ref. to
4AT(diag)-20, Inspection Mode.>
4) Read the DTC.
Is DTC displayed on the Subaru
Select Monitor?
Go to step
6
.
Finish the diagno-
sis.
Summary of Contents for 2009 IMPREZA
Page 18: ...PC 4 Precaution PRECAUTION...
Page 21: ...NT 4 Note NOTE Lift Rigid rack A Attachment NT 00241 A A Attachment NT 00242 A...
Page 23: ...NT 6 Note NOTE A Front B Rear 1 Front crossmember 2 Rear differential 1 2 A B NT 00210...
Page 66: ...PI 22 Pre delivery Inspection PRE DELIVERY INSPECTION...
Page 112: ...PM 48 A C Filter PERIODIC MAINTENANCE SERVICES...
Page 219: ...IN H4SO 10 Resonator Chamber INTAKE INDUCTION...
Page 324: ...ME H4SO 106 Engine Noise MECHANICAL...
Page 388: ...SP H4SO 6 Accelerator Pedal SPEED CONTROL SYSTEMS...
Page 395: ...IG H4SO 8 Spark Plug Cord IGNITION...
Page 418: ...SC H4SO 24 Battery STARTING CHARGING SYSTEMS...
Page 725: ...EN H4SO diag 308 General Diagnostic Table ENGINE DIAGNOSTICS...
Page 926: ...GD H4SO 202 Diagnostic Trouble Code DTC Detecting Criteria GENERAL DESCRIPTION...
Page 1181: ...EX H4DOTC 16 Muffler EXHAUST...
Page 1212: ...CO H4DOTC 32 Engine Cooling System Trouble in General COOLING...
Page 1221: ...IG H4DOTC 8 Ignition Coil IGNITION...
Page 1818: ...GD H4DOTC 230 Diagnostic Trouble Code DTC Detecting Criteria GENERAL DESCRIPTION...
Page 2154: ...5MT 82 General Diagnostic Table MANUAL TRANSMISSION AND DIFFERENTIAL...
Page 2227: ...RS 20 General Diagnostic Table REAR SUSPENSION...
Page 2364: ...DS 36 General Diagnostic Table DRIVE SHAFT SYSTEM...
Page 2615: ...BR 48 General Diagnostic Table BRAKE...
Page 2624: ...PB 10 General Diagnostic Table PARKING BRAKE...
Page 2681: ...PS 58 General Diagnostic Table POWER ASSISTED SYSTEM POWER STEERING...
Page 2730: ...AC 50 General Diagnostic Table HVAC SYSTEM HEATER VENTILATOR AND A C...
Page 2961: ...SB 22 Rear Seat Belt SEAT BELT SYSTEM...
Page 3035: ...COM 6 Horn Switch COMMUNICATION SYSTEM...
Page 3070: ...GW 36 Wiper Deicer System GLASS WINDOWS MIRRORS...
Page 3092: ...IDI 22 Clock INSTRUMENTATION DRIVER INFO...
Page 3158: ...SL 54 Immobilizer Antenna SECURITY AND LOCKS...
Page 3167: ...SR 10 Sunshade SUNROOF T TOP CONVERTIBLE TOP SUNROOF...
Page 3240: ...EI 74 Ornament EXTERIOR INTERIOR TRIM...
Page 3286: ...CC 12 Neutral Position Switch CRUISE CONTROL SYSTEM...
Page 3311: ...CC diag 26 Diagnostic Procedure with Cancel Code CRUISE CONTROL SYSTEM DIAGNOSTICS...
Page 3421: ...LAN diag 88 General Diagnostic Table LAN SYSTEM DIAGNOSTICS...
Page 3486: ...WI 67 Remote Engine Start System WIRING SYSTEM...