Code No. P2719: Abnormality in Select Pressure Solenoid Valve Function




DIAGNOSTIC FUNCTION


CVT-ECU determines that the system is defective by monitoring the select pressure solenoid valve.

JUDGEMENT CRITERIA





PROBABLE CAUSES




DIAGNOSIS PROCEDURE


STEP 1. M.U.T.-III diagnosis code


Q. Are diagnosis codes P2720 or P2721 set?

Carry out the appropriate troubleshooting.
Go to Step 2.

STEP 2. Measure the output wave pattern of the select pressure solenoid valve at CVT-ECU connector (LBLS terminal).


(1)Connect the CVT assembly connector.
(2)Engine: Idling
(3)When the vehicle is stationary
(4)Selector lever position: N
(5)Connect an oscilloscope, and measure the voltage between CVT-ECU connector LBLS terminal and body earth.
OK: A wave pattern such as the one shown on (Check Procedure Using an Oscilloscope) should be output. There should be no noise in the output wave pattern.

Q. Is the check result normal?

Go to Step 3.
Refer to diagnosis code No.P2720: Malfunction of Select Pressure Solenoid Valve (short) , or diagnosis code No.P2721: Malfunction of Select Pressure Solenoid Valve (open) .

STEP 3. Symptom recheck after erasing diagnosis code


Turn the ignition switch to the "LOCK" (OFF) position, and wait for one minute. Then, drive the vehicle for a while and check again.

Q. Is the diagnosis code set?

Replace the CVT assembly.
Intermittent malfunction.