DTC Diagnosis Procedure
WARNING: This page is about a different car, the 2019 Nissan NV3500 HD, 2019 Nissan NV2500 HD, and 2019 Nissan NV1500. However, it is still accessible from the selected car via links, so may be relevant.
- CHECK DTC OF COMBINATION METER
With CONSULT
Perform "Self Diagnostic Results" in "METER/M&A".
Is any DTC detected?
YES
Check DTC detected item. Refer to DTC Index .
NO
GO TO 2.
- CHECK DTC OF TCM
Perform "Self Diagnostic Results" in "TRANSMISSION".
Is any DTC other than "P1721" detected?
YES
- Check DTC detected item.
Refer to DTC Index .
NO
GO TO 3.
- Check DTC detected item.
- CHECK TCM POWER SUPPLY AND GROUND CIRCUIT
Check TCM power supply and ground circuit. Refer to Diagnosis Procedure .
Is the inspection result normal?
YES
Replace the control valve with TCM. Refer to Exploded View .
NO
Repair or replace damaged parts.