DTC P0734:00 [CW6A-EL]


id050233818100

DTC P0734:00

4GR incorrect ratio

DETECTION CONDITION
•  In D position, 4GR, the following phenomenon occurs:
―  There is difference between turbine/input shaft speed and output shaft speed sensor speed for 230 to 1,980 ms (varies with ATF temperature and ECT) during shift-up.
―  There is difference between turbine/input shaft speed and output shaft speed sensor speed for 1,500 to 3,900 ms (varies with ATF temperature) while driving without shifting.
FAIL-SAFE FUNCTION
•  Inhibits malfunctioning gear.
•  Limits engine torque.
•  Inhibits learning control.
•  Inhibits manual mode.
•  Inhibits i-stop control.
•  Inhibits AAS.
POSSIBLE CAUSE
•  ATF is less than specified value
•  Clutch burnt
•  Shift solenoid malfunction
•  ATF leakage from clutch circuit
•  Control valve body malfunction
SYSTEM WIRING DIAGRAM
Not applicable

Diagnostic procedure

STEP

INSPECTION

ACTION

1
VERIFY DTC OUTPUT STATUS
•  Are any the following DTCs displayed?
―  P0746:00, P0751:00, P0752:00, P0756:00, P0757:00, P0761:00, P0762:00, P0766:00, P0767:00, P0771:00, P0772:00, P0842:00, P0843:00, P0847:00, P0848:00, P0872:00, P0873:00, P0877:00, P0878:00, P1784:00
Yes
Go to the applicable DTC inspection.
No
Go to the next step.
2
INSPECT ATF LEVEL
•  Inspect the ATF level.
•  Is there any malfunction?
Yes
Adjust the ATF level to the specification, then go to the next step.
No
Go to the next step.
3
PERFORM ON-BOARD DIAGNOSTIC TEST TO SPECIFY MALFUNCTIONING PART
•  Perform the on-board diagnostic test.
•  Are any DTCs present?
Yes
Go to the applicable DTC inspection.
No
ATF amount in Step 2 is correct:
•  Replace the automatic transaxle.
ATF amount adjusted in Step 2:
•  Drive the vehicle to check it, and if there is no problem then the DTC troubleshooting is complete.