Inspection Procedure 11: Does not Shift Properly (all Points)


COMMENTS ON TROUBLE SYMPTOM


If all shift points are early or late while driving, the cause is probably a malfunction of the output shaft speed sensor, accelerator pedal position sensor, or ECU.

PROBABLE CAUSES



DIAGNOSIS PROCEDURE

STEP 1. M.U.T.-III data list
Item 6: Output shaft speed sensor (Refer to data list reference table ).

Q. Is the check result normal?
Go to Step 2.
Refer to diagnosis code P1767 (P0720): Output shaft speed sensor system .

STEP 2. M.U.T.-III data list
Item 2: Accelerator pedal position sensor (Refer to data list reference table ).

Q. Is the check result normal?
Go to Step 3.
Check the accelerator pedal position sensor system (Refer to GROUP 13A - Troubleshooting, Inspection Chart For Diagnosis Code <6G72> or GROUP 13B - Troubleshooting, Inspection Chart For Diagnosis Code <6G75> or GROUP 13D - Troubleshooting, Inspection Chart For Diagnosis Code <4M41>).

STEP 3. M.U.T.-III actuator test
(1)Test drive the vehicle (Refer to Road Test, Inspection procedure 8 ).
(2)Check that the gear shifting corresponds to the standard shift line of the shift pattern diagram.

Q. Is the check result normal?
The inspection is complete.
Replace the A/T-ECU <4M4> or engine-A/T-ECU <6G7>.