5A
Road Test
This test is to check if upshift, downshift and lock-up take place at specified speeds while actually driving vehicle on a level road.
WARNING:
• Carry out test in very little traffic area to prevent an accident.
• Test requires 2 persons, a driver and a tester.
1) Warm up engine.
2) With engine running at idle, shift selector lever to “D” range.
3) Accelerate vehicle speed by depressing accelerator pedal gradually.
4) While driving in “D” range, check if gear shift and lock-up occur properly as specified in Automatic Gear Shift Table .
Troubleshooting
Condition Possible Cause Action
Unable to run in all range
Faulty valve body component
Replace valve body assembly.
Faulty oil pump
Inspect. If NG, replace.
Seized or broken planetary gear
Inspect. If NG, replace.
Faulty one-way No.2 clutch
Inspect. If NG, replace.
Faulty forward clutch
Inspect. If NG, replace.
Faulty reverse clutch
Inspect. If NG, replace.
Faulty 1st and reverse brake
Inspect. If NG, replace.
Damaged drive plate
Inspect. If NG, replace.
Faulty torque converter
Replace.
No gear shift as 3rd gear
Malfunction of shift solenoid valve-A and/or- B
Inspect. If NG, replace.
Malfunction of timing solenoid valve
Inspect. If NG, replace.
Malfunction of pressure control solenoid valve
Inspect. If NG, replace valve body assembly.
1 → 2 upshift fails to occur
Malfunction of shift solenoid valve-B
Inspect. If NG, replace.
Malfunction of output shaft speed sensor
Inspect. If NG, replace.
Malfunction of throttle position sensor
Inspect. If NG, replace.
Malfunction of transmission range sensor
Inspect. If NG, replace.
Faulty valve body component
Replace valve body assembly
Faulty 2nd brake
Inspect. If NG, replace.
Faulty one-way No.1 clutch
Inspect. If NG, replace.
2 → 3 upshift fails to occur
Malfunction of shift solenoid valve-A
Inspect. If NG, replace.
Malfunction of output shaft speed sensor
Inspect. If NG, replace.
Malfunction of throttle position sensor
Inspect. If NG, replace.
Malfunction of transmission range sensor
Inspect. If NG, replace.
Faulty valve body component
Replace valve body assembly.
Faulty direct clutch
Inspect. If NG, replace.
3 → 4 upshift fails to occur
Malfunction of shift solenoid valve-B
Inspect. If NG, replace.
Malfunction of “3” position switch
Inspect. If NG, replace.
Malfunction of engine coolant temperature sensor
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 throttle position sensor
Inspect. If NG, replace.
Malfunction of transmission range sensor
Inspect. If NG, replace.
Malfunction of crankshaft position sensor
Inspect. If NG, replace.
Malfunction of timing solenoid valve
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.
Faulty valve body component
Replace valve body assembly.
Faulty O/D and 2nd coast brake
Inspect. If NG, replace.
4 → 3 downshift fails to occur
Malfunction of shift solenoid valve-A
Inspect. If NG, replace.
Malfunction of “3” position switch
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 throttle position sensor
Inspect. If NG, replace.
Malfunction of timing solenoid valve
Inspect. If NG, replace.
Malfunction of pressure control solenoid valve
Inspect. If NG, replace valve body assembly.
Faulty valve body component
Replace valve body assembly.
Faulty forward clutch
Inspect. If NG, replace.
3 → 2 downshift fails to occur
Malfunction of shift solenoid valve-A
Inspect. If NG, replace.
Malfunction of output shaft speed sensor
Inspect. If NG, replace.
Malfunction of throttle position sensor
Inspect. If NG, replace.
Faulty valve body component
Replace valve body assembly.
Faulty one-way No.1 clutch
Inspect. If NG, replace.
2 → 1 downshift fails to occur
Malfunction of shift solenoid valve-B
Inspect. If NG, replace.
Malfunction of output shaft speed sensor
Inspect. If NG, replace.
Malfunction of throttle position sensor
Inspect. If NG, replace.
Faulty valve body component
Replace valve body assembly.
Faulty one-way No.2 clutch
Inspect. If NG, replace.
Gear shift point is incorrect
Abnormal engine condition
Inspect and repair engine.
Malfunction of output shaft speed sensor
Inspect. If NG, replace.
Malfunction of throttle position sensor
Inspect. If NG, replace.
Malfunction of pressure control solenoid valve
Inspect. If NG, replace valve body assembly.
TCC (lock-up) function does not operate
Malfunction of TCC solenoid valve
Inspect. If NG, replace.
Malfunction of shift solenoid valve-A and/or- B
Inspect. If NG, replace.
Malfunction of brake light switch
Inspect. If NG, replace.
Malfunction of engine coolant temperature sensor
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 throttle position 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.
Faulty valve body component
Replace valve body assembly.
Faulty torque converter
Replace.