Trouble Selection

TROUBLE SELECTION REFERENCE

	Select lever positions		Expected problem location
	D, M	R	Expected problem location
Stall speed	H	O	Forward brake Forward one-way clutch 1st one-way clutch 3rd one-way clutch
	O	H	Front brake High & Low reverse clutch 1st one-way clutch
	L	L	Engine & torque converter one-way clutch
	H	H	Line pressure is low
	O	O	Check one-way clutch in the torque converter for stucking or check with another item tests
O: Stall speed is within the specified level. H: Stall speed is higher than the specified level. L: Stall speed is lower than the specified level.

TROUBLE SELECTION

Result		Possible cause
Idle speed	Low in all range (P, R, N, D, M)	The probable causes are faulty pressure delivery system, low output of oil pump, etc. For example: Wear of oil pump Sticking of pressure regulator valve or plug, spring fatigue Fluid pressure leakage from oil strainer-->oil pump-->pressure regulator valve passage Engine idling is too low
	Low in a specific range	The probable cause is fluid pressure leakage of range related device or passage after the pressure is distributed by the manual valve.
	High	The probable cause are faulty sensors or poor pressure regulation. For example: Faulty accelerator sensor Faulty fluid temperature sensor Line pressure solenoid malfunction (sticking, clogging of filter, short during OFF) Sticking of pressure regulator valve or plug
Stall speed	Fluid pressure does not rise higher than during idle	The probable cause are faulty sensors or poor pressure regulation. For example: Faulty accelerator sensor TCM malfunction Line pressure solenoid malfunction (sticking and/or short during ON) Sticking of pressure regulator valve and plug Sticking of the pilot valve and clogging of pilot filter
	Fluid pressure increases but not within the specified level	The probable causes are faulty pressure delivery system or sensors, and poor pressure regulation. For example: Faulty accelerator sensor Line pressure solenoid malfunction (sticking and/or clogging of filter) Sticking of pressure regulator valve and plug Sticking of the pilot valve and clogging of pilot filter
	Low in a specific range	The probable cause is fluid pressure leakage of range related device or passage after the pressure is distributed by the manual valve.