DTC Diagnosis Procedure
WARNING: This page is about a different car, the 2019 Nissan NV3500 HD and 2019 Nissan NV2500 HD. However, it is still accessible from the selected car via links, so may be relevant.
- CHECK ECM POWER SUPPLY AND GROUND CIRCUIT
Perform trouble diagnosis for ECM power supply and ground circuit. Refer to DTC Diagnosis Procedure .
Is the inspection result normal?
YES
GO TO 2.
NO
Repair or replace error-detected parts.
- PERFORM DTC CONFIRMATION PROCEDURE
- Turn ignition switch ON.
- Erase DTC.
- Perform DTC confirmation procedure. Refer to DTC Description .
Is the 1st trip DTC P0603 displayed again?
YES
Replace ECM. Refer to Removal and Installation .
NO
INSPECTION END