Diagnosis Procedure

1. Turn ignition switch ON.
2. Erase DTC.
3. Perform DTC confirmation procedure. Refer to "DTC LOGIC ".
4. Check 1st trip DTC.

   Is the 1st trip DTC P1423 or P1424 displayed again? 

   YES: GO TO 2.

   NO: INSPECTION END

Replace ECM. Refer to "REMOVAL AND INSTALLATION ".

: INSPECTION END