P0730

P0730 INCORRECT GEAR RATIO

Description

TCM selects the gear ratio using the engine load (throttle position), the primary pulley revolution speed, and the secondary pulley revolution speed as input signal. Then it changes the operating pressure of the primary pulley and the secondary pulley and changes the groove width of the pulley.


CONSULT Reference Value in Data Monitor Mode

Remarks: Specification data are reference values.







On Board Diagnosis Logic

- This is not an OBD-II self-diagnostic item.
- TCM calculates the actual gear ratio with primary speed sensor and secondary speed sensor.
- Diagnostic trouble code "P0730" with CONSULT is detected, when TCM receives an unexpected gear ratio signal.


Possible Cause

Transaxle assembly


DTC Confirmation Procedure


CAUTION:
Always drive vehicle at a safe speed.
NOTE:
If "DTC Confirmation Procedure" has been previously performed, always turn ignition switch OFF and wait at least 10 seconds before performing the next test.
After the repair, perform the following procedure to confirm the malfunction is eliminated.

WITH CONSULT

1.Turn ignition switch ON and select "DATA MONITOR" mode for "TRANSMISSION" with CONSULT.
2.Make sure that output voltage of CVT fluid temperature sensor is within the range below.





3.Select "DATA MONITOR" mode for "TRANSMISSION" with CONSULT.
4.Start engine and maintain the following conditions for at least 30 consecutive seconds.





5.If DTC is detected, go to .


Diagnosis Procedure


1. CHECK DTC

Perform .
Are any DTC displayed?
YES - 1- DTC except for "P0730" is displayed: Go to Check the DTC detected item. Trouble Diagnosis.
YES - 2- DTC for "P0730" is displayed: Replace the transaxle assembly. Transaxle Assembly.
NO-INSPECTION END