4AT(diag)-86
Diagnostics with Phenomenon
AUTOMATIC TRANSMISSION (DIAGNOSTICS)
No shift occurs from 3rd to 4th gear.
• TCM
• ATF temperature sensor
• Control valve
• 2-4 brake
Engine brake is not effected when select lever is shifted from 4th
gear to 3rd gear.
• Inhibitor switch
• TCM
• Accelerator pedal position sensor
• Control valve
Engine brake is not effected when select lever is shifted from 3rd
gear to 2nd gear.
Control valve
Engine brake is not effected when select lever is shifted from 2nd
gear to 1st gear.
• Control valve
• Low & reverse brake
Shift characteristics are erroneous.
• Inhibitor switch
• TCM
• Front vehicle speed sensor
• Rear vehicle speed sensor
• Accelerator pedal position sensor
• Control valve
• Ground
No lock-up occurs.
• TCM
• Accelerator pedal position sensor
• ATF temperature sensor
• Control valve
• Lock-up facing
• Engine speed signal
Parking brake does not function.
• Select cable
• AT select lever
• Parking mechanism
Shift lever cannot be moved or is hard to move from “P” range.
ATF spurts out.
ATF level too high
Differential oil spurts out.
Differential gear oil level too high
Differential oil level changes excessively.
• Seal pipe
• Double oil seal
Odor is produced from ATF supply pipe.
• High clutch
• 2-4 brake
• Low & reverse clutch
• Reverse clutch
• Lock-up facing
• ATF deterioration
Shock occurs when shifting from 1st to 2nd gear.
• TCM
• Torque converter turbine speed sensor
• Accelerator pedal position sensor
• 2-4 brake duty solenoid
• ATF temperature sensor
• Line pressure linear solenoid
• Control valve
• 2-4 brake
• ATF deterioration
• Engine performance
• Low & reverse duty solenoid
Slippage occurs when shifting from 1st to 2nd gear.
• TCM
• Acceleration pedal position sensor
• 2-4 brake duty solenoid
• ATF temperature sensor
• Line pressure linear solenoid
• Control valve
• 2-4 brake
Symptom
Problem parts
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...