DTC NO | DIAGNOSTIC ITEM | |
P0731 | FIRST GEAR INCORRECT RATIO | - MALFUNCTION - |
If the value resulting from driving the PG-A output (input shaft rotation speed) by the 1st gear ratio does not match the PG-B output (output shaft rotation speed) after 1st gear is engaged, DTC P0731 is output.
Detection condition | Possible cause | Check item |
● Engine speed＞400rpm ● Transfer shaft speed＞900rpm ● Fluid temperature＞60°C ● PCM senses a signal that does not fall into the preprogrammed parameters | Malfunction ● PG-A or PG-B ● Transfer driven gear ● Rear clutch ● One-way clutch | ● Malfunction of pulse generator circuit ● Rear clutch slippage ● One-way clutch slippage |
SYMPTOM ● Automatic transaxle will hold 3rd gear (D) or 2nd gear (2,L) ● Code P0717 or P0722 may also be set (pulse generator codes) |
