AUTOMATIC TRANSAXLE DIAGNOSIS
STEP 1. Using scan tool MB991502, check actuator test
To prevent damage to scan tool MB991502, always turn the
Underdrive Solenoid Valve.
An operation sound should be heard from solenoid
(4) Turn the ignition switch to "LOCK" (OFF) position.
Q: Is the solenoid valve operating properly?
YES : Go to Step 2.
Refer to GROUP 23B, Valve Body
confirm that the symptom is eliminated.
STEP 2. Check the hydraulic pressure.
Hydraulic Pressure Test.
Q: Is the hydraulic pressure within the standard value?
STEP 3. Check the underdrive clutch system.
, Transaxle Assembly and GROUP 23B,
(2) Blow compressed air into the underdrive clutch oil orifice of
the transaxle case, and check if the underdrive clutch piston
Q: Is the air pressure maintained?