5A-42 Automatic Transmission/Transaxle:
Trouble Diagnosis 3
Off-vehicle repair
Incorrect shift point Engine abnormal condition Inspect and repair engine
Malfunction of output shaft speed
sensor
Inspect. If NG, replace.
Malfunction of accelerator pedal position
sensor
Inspect referring to “DTC P0122: Throttle
Position Sensor (Main) Circuit Low: in Section
1A”, “DTC P0123: Throttle Position Sensor
(Main) Circuit High: in Section 1A”, “DTC
P0222: Throttle Position Sensor (Sub) Circuit
Low: in Section 1A” and “DTC P0223: Throttle
Position Sensor (Sub) Circuit High: in Section
1A”.
Non operate TCC / lock-up
system
Malfunction of lock-up solenoid valve Inspect. If NG, replace.
Malfunction of shaft solenoid valve No.1
and/or No.2
Inspect. If NG, replace.
Malfunction of output shaft speed
sensor
Inspect. If NG, replace.
Malfunction of input shaft speed sensor Inspect. If NG, replace.
Malfunction of transmission range
sensor
Inspect. If NG, replace.
Malfunction of transmission fluid
temperature sensor
Inspect. If NG, replace.
Malfunction of pressure control solenoid
valve
Inspect. If NG, replace valve body assembly.
Malfunction of brake light switch Inspect referring to “Stop (Brake) Lamp Switch
Inspection: in Section 9B”. If NG, replace.
Malfunction of accelerator pedal position
sensor
Inspect referring to “DTC P0122: Throttle
Position Sensor (Main) Circuit Low: in Section
1A”, “DTC P0123: Throttle Position Sensor
(Main) Circuit High: in Section 1A”, “DTC
P0222: Throttle Position Sensor (Sub) Circuit
Low: in Section 1A” and “DTC P0223: Throttle
Position Sensor (Sub) Circuit High: in Section
1A”.
Faulty valve body component Replace valve body assembly.
Excessive “N”
→
“D” or
“N”
→
“R” time lag
Pressure control solenoid valve circuit
faulty
Inspect. If NG, replace valve body assembly.
Clogged oil strainer Replace.
Faulty valve body component Replace valve body assembly.
Condition Possible cause Correction / Reference Item
Condition Possible cause Correction / Reference Item
Unable to run in all range Faulty oil pump Inspect. If NG, replace.
Seized or broken planetary gear Inspect. If NG, replace.
Fluid pressure leakage to overdrive
clutch due to wear of oil pump bushing
Inspect. If NG, replace.
Damaged drive plate Inspect. If NG, replace.
Faulty torque converter Replace.
Excessive “N”
→
“D” shift
shock
Faulty forward clutch Inspect. If NG, replace.
Excessive “N”
→
“R” shift
shock
Faulty reverse brake Inspect. If NG, replace.
Faulty direct clutch Inspect. If NG, replace.
Poor 1
→
2 shift, excessive
shock or slippage
Faulty second brake Inspect. If NG, replace.
Faulty one-way clutch No.1 Inspect. If NG, replace.
Faulty one-way clutch No.2 Inspect. If NG, replace.
Poor 2
→
3 shift, excessive
shock or slippage
Faulty direct clutch Inspect. If NG, replace.
Faulty one-way clutch No.1 Inspect. If NG, replace.