TROUBLE JUDGMENT
COMMENT ON TROUBLE SYMPTOM


PROBABLE CAUSES
DIAGNOSIS PROCEDURE
STEP 1. M.U.T.-III CAN bus diagnostics
Q.
Is the check result normal?



STEP 2. Check the diagnosis code of the engine-A-M/T-ECU
Q.
Is the diagnosis code set?


STEP 3. M.U.T.-III other system diagnosis code
U1121: Failure information on engine-ECU <M/T> or engine-A-M/T-ECU <Automated manual transmission> (related to engine)
Q.
Is the diagnosis code set?


STEP 4. Check whether the diagnosis code is reset.
Q.
Is the diagnosis code set?



STEP 5. Check whether the diagnosis code is reset.
Q.
Is the diagnosis code set?



STEP 6. Check whether the diagnosis code is reset.
Q.
Is the diagnosis code set?
