Code No. P0746: Abnormality in Hydraulic Control System Function


DIAGNOSTIC FUNCTION


CVT-ECU determines that the malfunction is present when gear ratio becomes higher (gear ratio range: 2.349 to 0.394).

JUDGMENT CRITERIA


The status with the gear ratio of 3.5 or more continues for 0.1 seconds or with the gear ratio of 2.7 or more continues for 0.2 seconds.

PROBABLE CAUSES



DIAGNOSTIC PROCEDURE

STEP 1. Check other diagnosis codes.

Q. Are other diagnosis codes set?
Carry out the appropriate troubleshooting.
Go to Step 2.

STEP 2. M.U.T.-III data list
Item 33: Line pressure solenoid output current (Refer to Service Data Table .)

Q. Is the check result normal?
Intermittent malfunction
Go to Step 3.

STEP 3. Line Pressure Check
Carry out "hydraulic test"(Refer to ).

Q. Is the check result normal?
Go to Step 4.
Repair according to the hydraulic pressure diagnosis table.

STEP 4. Symptom recheck after erasing diagnosis code

Q. Is the check result normal?
Intermittent malfunction
Replace CVT-ECU.