Specifications

AUTOMATIC TRANSMISSION -
On-vehicle Service
23-58
HYDRAULIC PRESSURE TEST DIAGNOSIS TABLE
Trouble symptom Probable cause
All hydraulic pressures are high.
Incorrect transmission control cable adjustment
Malfunction of the regulator valve
All hydraulic pressures are low .
Incorrect transmission control cable adjustment
Malfunction of the oil pump
Clogged internal oil filter
Clogged external oil filter
Clogged oil cooler
Malfunction of the regulator valve
Malfunction of the relief valve
Incorrect valve body installation
Hydraulic pressure is abnormal
Malfunction of the regulator valve
in “R” range only.
Clogged orifice
Incorrect valve body installation
Hydraulic pressure is abnormal
Malfunction of the overdrive solenoid valve
in “3” or “4” range only.
Malfunction of the overdrive pressure control valve
Malfunction of the regulator valve
Malfunction of the switch valve
Clogged orifice
Incorrect valve body installation
Only underdrive hydraulic
Malfunction of the oil seal K
pressure is abnormal.
Malfunction of the oil seal L
Malfunction of the oil seal M
Malfunction of the underdrive solenoid valve
Malfunction of the underdrive pressure control valve
Malfunction of check ball
Clogged orifice
Incorrect valve body installation
Only reverse clutch hydraulic
Malfunction of the oil seal A
pressure is abnormal.
Malfunction of the oil seal B
Malfunction of the oil seal C
Clogged orifice
Incorrect valve body installation