Sentra L4-1.8L (QG18DE) SULEV (2003)
NOTE: If "NG" is displayed on "CAN COMM" for the diagnosed control unit, replace the control unit.
INSPECTION
Proceed to trouble diagnosis according to the check sheet results (example).
Case 1:
Replace ECM.
See: Engine Control Module
Case 2:
Check CAN communication Circuit.
See: Non-Trouble Code Procedures/CAN Communication Circuit Check