4.
Accelerate the Engine speed until about 2000 rpm in the 5th gear.
Specification : INPUT SPEED - (OUTPUT SPEED × GEAR RATIO) ≤ 200 RPM
The value of the input shaft speed should be equal to the value of the output shaft speed, when multiplied by the 5th gear ratio, while the transaxle is engaged in the 5th gear. For example, if the output speed is 1,000 rpm and the 5th gear ratio is 0.868, then the input speed is 868 rpm.
This code is set if the value of input shaft speed is not equal to the value of the output shaft, when multiplied by the 5th gear ratio, while the transaxle is engaged in 5th gear. This malfunction is mainly caused by mechanical troubles such as control valve sticking or solenoid valve malfunctioning rather than an electrical issue.
Item | Detecting Condition | Possible cause |
DTC Strategy | ● 5th gear incorrect ratio | ● Faulty Input speed sensor ● Faulty output speed sensor ● Faulty OD, DIR clutch or 2nd brake |
Enable Conditions | ● Engine speed ＞450rpm ● Output speed ＞300rpm ● Shift stage 5th. gear ● Input speed ＞0rpm ● A/T oil temp output ≥ -23°C(-9.4°F) ● 11V ≤ Battery Voltage ≤16V ● TRANSAXLE RANGE SWITCH is normal | |
Threshold value | ● ㅣinput speed/5th gear ratio - output speedㅣ≥200rpm | |
Diagnostic Time | ● More than 1sec | |
Fail Safe | ● Locked into 3rd gear.(If diagnosis code P0734 is output four times, the transaxle is locked into 3rd gear) |
※ Go to "Signal circuit Inspection" procedure
GEAR POSITION | ELEMENT | ||||||||
L/R BRAKE | 2ND BRAKE | U/D CLUTCH | O/D CLUTCH | RED BRAKE | DIR CLUTCH | REV CLUTCH | OWC1 | OWC2 | |
1st | ● | ● | ● | ● | ● | ||||
2nd | ● | ● | ● | ● | |||||
3rd | ● | ● | ● | ● | |||||
4th | ● | ● | ● | ● | |||||
5th | ● | ● | ● | ||||||
REV | ● | ● | ● | ||||||
N,P | ● | ● | |||||||
Low ＆ Reverse Brake is released When the vehicle speed over the 5MPH(7km/h)
Connect Scan tool.
Engine "ON".
Monitor the "INPUT ＆OUTPUT SPEED SENSOR" parameter on the scan tool.
Accelerate the Engine speed until about 2000 rpm in the 5th gear.
Specification : INPUT SPEED - (OUTPUT SPEED × GEAR RATIO) ≤ 200 RPM
Does "INPUT ＆ OUTPUT SPEED SENSOR" follow the reference data?
▶ Go to "Component Inspection" procedure.
▶ Check for electrical noise of circuit in INPUT ＆ OUTPUT SPEED SENSOR or Replace INPUT ＆ OUTPUT SPEED SENSOR. Repair as necessary and Go to "Verification of Vehicle Repair" procedure.
Connect oil pressure gauge to "OD" and "2nd" and "DIR" port.
Engine "ON".
Drive a car with gear position "5".
Compare it with reference data as below.
Specification : refer to Standard Oil Pressure Table as below
Is oil pressure value within specification?
▶ Repair AUTO TRANSAXLE(Clutch or Brake) as necessary and Go to "Verification of Vehicle Repair" procedure.
▶ Replace AUTO TRANSAXLE (BODY CONTROL VALVE faulty) as necessary and Go to "Verification of Vehicle Repair" procedure.
After a repair, it is essential to verify that the fault has been corrected.
Connect scantool and select "Diagnostic Trouble Codes(DTCs)" mode.
Using a scantool, Clear DTC.
Operate the vehicle within DTC Enable conditions in General information.
Are any DTCs present ?
▶ Go to the applicable troubleshooting procedure.
▶ System performing to specification at this time.
