4.
Perform the "STALL TEST" with gear position "R"
Specification : 2000~2700 engine rpm
OPERATING ELEMENT OF EACH SHIFTING RANGE
Refer to DTC P0731
Refer to DTC P0731
The value of the input shaft speed should be equal to the value of the output shaft speed, when multiplied by the reverse gear ratio, while the transaxle is engaged in the reverse gear.
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 reverse gear ratio, while the transaxle is engaged in reverse gear. This malfunction is mainly caused by mechanical troubles.
Item | Detecting Condition & Fail Safe | Possible cause |
DTC Strategy | ● Reverse gear incorrect ratio | ● Faulty Input speed sensor ● Faulty output speed sensor ● Faulty RVS clutch or L/R brake |
Enable Conditions | ● Engine speed ＞450rpm ● Output speed ＞900rpm ● Shift stage Rev. gear ● Input speed ＞0rpm ● A/T oil temp sensor voltage ＜4.5V ● Voltage of Battery ＞10V ● TRANSAXLE RANGE SWITCH is normal | |
Threshold value | ●ㅣinput speed/Rev. gear ratio - output speed ㅣ≥200rpm /rev. gear ratio | |
Diagnostic Time | ● more than 1sec | |
Fail Safe | ● Locked into 3 rd gear.(If diagnosis code P0736 is output four times, the transaxle is locked into 3rd gear) |
Connect scantool to data link connector(DLC)
Engine "ON".
Monitor the "ENGINE SPEED, INPUT SPEED SENSOR, OUTPUT SPEED SENSOR, GEAR POSITION" parameter on the scantool
Perform the "STALL TEST" with gear position "R"
Specification : 2000~2700 engine rpm
Refer to DTC P0731
Connect Scantool
Engine "ON" .
Monitor signal waveform of the "INPUT & OUTPUT SPEED SENSOR" after shifting to R range
Does "INPUT & OUTPUT SPEED SENSOR" follow the referance data?
▶ Go to "Component Inspection" procedure
▶ Check for electrical niose of circuit in INPUT & OUTPUT SPEED SENSOR or Replace INPUT & OUTPUT SPEED SENSOR. Repair as necessary and Go to "Verification Vehicle Repair" procedure
Connect Oil pressure guage to "RV" and "LR" port.
Engine "ON".
Drive a car with gear position R
Compare it with referance data as below
Specification : Refer to DTC P0731
Is oil pressure value within specification?
▶ Repair AUTO TRANSAXLE(Clutch or Brake) and Go to "Verification Vehicle Repair" procedure.
▶ Replace AUTO TRANSAXLE (BODY CONTROL VALVE faulty) and Go to "Verification Vehicle Repair " procedure.
Refer to DTC P0731
