Inspection Procedure 9: The engine brake is not applied.




PROBABLE CAUSES



  • Poor adjustment of transmission control cable
  • Inadequate A/T fluid level
  • Malfunction of the A/T-ECU
  • A/T failure: Hydraulic system (valve body assembly), driving force transmission system (clutch/brake)

DIAGNOSIS PROCEDURE


STEP 1. Check the transmission control cable.


Check the installation status of transmission control cable and inhibitor switch.

Q. Is the check result normal?

Go to Step 2.
Adjust the installation status of transmission control cable and inhibitor switch. .

STEP 2. Check the A/T fluid.


Check the A/T fluid for burning, fouling, and foreign material.

Q. Is the check result normal?

Go to Step 3.
Go to Step 7.

STEP 3. Check the A/T fluid level.


Check if the A/T fluid level is adequate.

Q. Is the check result normal?

Go to Step 4.
Check and repair the leakage point of the A/T fluid, add the A/T fluid, and then go to Step 4.

STEP 4. Perform a hydraulic test.


Refer to .

Q. Is the check result normal?

Go to Step 5.
Go to Step 7.

STEP 5. Replace the A/T-ECU.


Q. Is the failure resolved?

Go to Step 6.
Go to Step 7.

STEP 6. Compare with another same model vehicle.


Q. Is there a difference from the same model vehicle?

Go to Step 7.
The procedure is complete.

STEP 7. Remove the transmission assembly from the vehicle.


Disassemble and check the transmission assembly to check if there is a foreign material inside.

Q. Is the check result satisfactory?

Replace the transmission assembly.
Replace the failure part.