Diagnostics with Phenomenon: Inspection

WARNING: This page is about a different variant/trim than selected.

AUTOMATIC TRANSMISSION SYSTEM PROBLEM SYMPTOMS

Symptom	Problem parts
Starter does not operate when select lever is in "P" or "N" range. Starter operates when select lever is in "R" or "D" range.	Inhibitor switch Select cable Select lever Starter motor and harness
Abnormal noise when select lever is in "P" or "N".	Strainer Transfer duty solenoid Oil pump Drive plate ATF level too high or too low
Hissing noise occurs during standing start.	Strainer ATF level too high or too low
Noise occurs while driving in "D1".	Final gear Planetary gear Reduction gear Differential gear oil level too high or too low
Noise occurs while driving in "D2".
Noise occurs while driving in "D3".	Final gear Low & reverse brake Reduction gear Differential gear oil level too high or too low
Noise occurs while driving in "D4".	Final gear Low & reverse brake Planetary gear Reduction gear Differential gear oil level too high or too low
Vehicle moves when select lever is in "N".	Select cable Inhibitor switch TCM Low clutch
Shock occurs when select lever is shifted from "N" to "D" range.	Accelerator pedal position sensor ATF temperature sensor Line pressure linear solenoid Low clutch duty solenoid Low clutch TCM Harness Control valve ATF deterioration
Excessive time lag occurs when select lever is shifted from "N" to "D" range.	Control valve Low clutch Line pressure linear solenoid Seal ring Front gasket of transmission case
Shock occurs when select lever is shifted from "N" to "R" range.	Accelerator pedal position sensor ATF temperature sensor Line pressure linear solenoid TCM Harness Control valve ATF deterioration
Excessive time lag occurs when select lever is shifted from "N" to "R" range.	Control valve Low & reverse clutch Reverse clutch Line pressure linear solenoid Seal ring Front gasket of transmission case
Vehicle does not start in any shift range. (Engine stalls)	Parking brake mechanism Planetary gear
Vehicle does not start in any shift range. (Engine operates)	Strainer Line pressure linear solenoid Control valve Drive pinion Hypoid gear Axle shaft Differential gear Oil pump Input shaft Output shaft Planetary gear Drive plate ATF level too low. Front gasket of transmission case
Vehicle does not start in "R" range only. (Engine operates)	Select cable Select lever Line pressure linear solenoid Control valve Low & reverse clutch Reverse clutch
Vehicle does not start in "R" range only. (Engine stalls)	Low clutch 2-4 brake Planetary gear Parking brake mechanism
Vehicle does not start in "D" range. (Engine operates)	Low clutch One-way clutch
Vehicle does not start in "D" range. (Engine stalls)	Reverse clutch
Vehicle does not start in "R" range only. (Engine operates)	Control valve
Acceleration during standing start is poor. (High rpm stall)	Control valve Low clutch Reverse clutch ATF level too low. ATF deterioration Front gasket of transmission case Differential gear oil level too high or too low
Acceleration during standing start is poor. (Low rpm stall)	Oil pump Torque converter one-way clutch Engine performance
Acceleration is poor when select lever is in "D" range. (Normal rpm stall)	TCM Control valve High clutch 2-4 brake Planetary gear
Acceleration is poor when select lever is in "R" range. (Normal rpm stall)	Control valve High clutch 2-4 brake Planetary gear
No shift occurs from 1st to 2nd gear.	TCM Rear vehicle speed sensor Front vehicle speed sensor Accelerator pedal position sensor Control valve 2-4 brake
No shift occurs from 2nd to 3rd gear.	TCM Control valve High clutch
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 is not effected.	Select cable Select lever Parking mechanism
Shift lever cannot be moved or is hard to move from "P" range.	Select cable Select lever Parking mechanism
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 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 from 1st to 2nd gear.	TCM Accelerator pedal position sensor 2-4 brake duty solenoid ATF temperature sensor Line pressure linear solenoid Control valve 2-4 brake
Shock occurs from 2nd to 3rd gear.	TCM Torque converter turbine speed sensor Accelerator pedal position sensor 2-4 brake duty solenoid ATF temperature sensor Line pressure linear solenoid Low & reverse duty solenoid Control valve High clutch 2-4 brake ATF deterioration Engine performance High clutch duty solenoid
Slippage occurs from 2nd to 3rd gear.	TCM Accelerator pedal position sensor 2-4 brake duty solenoid ATF temperature sensor Line pressure linear solenoid Control valve High clutch 2-4 brake Low & reverse duty solenoid
Shock occurs from 3rd to 4th 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 Low clutch duty solenoid 2-4 brake ATF deterioration Engine performance
Slippage occurs from 3rd to 4th gear.	TCM Accelerator pedal position sensor 2-4 brake duty solenoid ATF temperature sensor Line pressure linear solenoid Control valve 2-4 brake
Shock occurs when select lever is shifted from 3rd gear to 2nd gear.	TCM Torque converter turbine speed sensor Accelerator pedal position sensor ATF temperature sensor Line pressure linear solenoid Control valve 2-4 brake duty solenoid 2-4 brake ATF deterioration High clutch duty solenoid
Shock occurs when select lever is shifted from 2nd gear to 1st gear.	TCM Torque converter turbine speed sensor Accelerator pedal position sensor ATF temperature sensor Line pressure linear solenoid Control valve Low & reverse clutch ATF deterioration 2-4 brake duty solenoid Low & reverse brake duty solenoid
Shock occurs when accelerator pedal is released at medium speeds.	TCM Accelerator pedal position sensor ATF temperature sensor Line pressure linear solenoid Control valve Lock-up damper Engine performance
Vibration occurs during straight-forward operation.	TCM Lock-up duty solenoid Lock-up facing Lock-up damper
Vibration occurs during turns, (tight corner braking phenomenon)	TCM Front vehicle speed sensor Rear vehicle speed sensor Accelerator pedal position sensor ATF temperature sensor Transfer clutch Transfer valve Transfer duty solenoid ATF deterioration Harness
Front wheel slippage occurs during standing starts.	TCM Front vehicle speed sensor Accelerator pedal position sensor ATF temperature sensor Control valve Transfer clutch Transfer valve Transfer pipe Transfer duty solenoid
Vehicle is not set in FWD mode.	TCM Transfer clutch Transfer valve Transfer duty solenoid
Select lever is hard to move.	Select cable Select lever Detent spring Manual plate
Select lever is excessively hard to move. (Unreasonable resistance)	Detent spring Manual plate
Select lever slips out of operation during acceleration or while driving on rough terrain.	Select cable Select lever Detent spring Manual plate
Manual mode is not engaged.	SPORT shift switch TCM Body integrated unit
Gear does not change though the select lever is operated in manual mode.	Up shift switch Down shift switch TCM Body integrated unit