Inspection Procedure 6: Engine Stalls During Shifting
COMMENTS ON TROUBLE SYMPTOM
If the engine stalls when the selector lever is shifted from N to D or R range while the engine is idling, the cause is probably a malfunction of the engine system, damper clutch solenoid valve, valve body or torque converter (damper clutch).
PROBABLE CAUSES
- Malfunction of engine system
- Malfunction of damper clutch solenoid valve
- Malfunction of valve body
- Malfunction of torque converter (damper clutch)
- Malfunction of the A/T-ECU <4M4>
- Malfunction of the engine-A/T-ECU <6G7>
|
|
STEP 1. M.U.T.-III actuator test
|
|
|
Item 6: Damper clutch solenoid valve
|
|
|
OK: Operating sound can be heard.
|
|
|
Q.
Is the check result normal?
|
|
|
 Go to Step 2.
|
|
|
|
|
|
 Replace the damper clutch solenoid valve.
|
|
|
|
|
|
STEP 2. Valve body disassembly clean and assembly
|
|
|
(1)Check the bolts for looseness and the O-ring, solenoid valve and valve body for damage.
Replace the valve body assembly if the damages are thought to be irreparable.
|
|
|
(2)Test drive the vehicle.
|
|
|
(3)Verify that the condition described by the customer exists.
|
|
|
Q.
Does a malfunction take place again?
|
|
|
Go to Step 3.
|
|
|
|
|
|
The inspection is complete.
|
|
|
|
|
|
STEP 3. Torque converter check
|
|
|
Check for damaged drive plate, incorrect installation in the input shaft (inserted at an angle), damaged splines or damper clutch sealing.
|
|
|
Q.
Is the check result normal?
|
|
|
Go to Step 4.
|
|
|
|
|
|
If repair is possible, repair the damaged part. If repair is not possible because the splines on the drive plate or torque converter are damaged, replace it.
|
|
|
|
|
|
STEP 4. Engine system check
|
|
|
Q.
Is the check result normal?
|
|
|
Replace the A/T-ECU <4M4> or engine-A/T-ECU <6G7>.
|
|
|
|
|
|
Repair the engine system.
|
|
|
|