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 CONNECTOR
- Turn the ignition switch OFF.
- Disconnect the battery cable from the negative terminal.
- Check the following terminals and connectors for damage, bend and loose connection (unit side and connector side).
- A/T assembly
- Harness connector F14
- Harness connector E5
Is the inspection result normal?
YES
GO TO 2.
NO
Repair the terminal and connector.
- CHECK HARNESS FOR OPEN CIRCUIT
- Disconnect the connector of A/T assembly.
- Check the resistance between the A/T assembly harness connector terminals.
Is the measurement value within the specification?
YES
With VQ40DE: GO TO 3.
YES
With VK56VD: GO TO 4.
NO
Repair the TCM branch line.
- CHECK HARNESS FOR OPEN CIRCUIT
- Remove the control valve with TCM. Refer to Removal and Installation .
- Disconnect the connector of TCM.
- Check the continuity between the A/T assembly harness connector and TCM harness connector.
A/T assembly harness connector
TCM harness connector
Continuity
Terminal No.
Connector No.
Terminal No.
3
F502
1
Existed
8
2
Existed
Is the inspection result normal?
YES
GO TO 4.
NO
Repair the harness between the A/T assembly harness connector and the TCM harness connector.
- CHECK POWER SUPPLY AND GROUND CIRCUIT
Check the power supply and the ground circuit of the TCM. Refer to the following.
- 5AT RE5R05A: Diagnosis Procedure
- 7AT RE7R01B: Diagnosis Procedure
Is the inspection result normal?
YES
Replace the TCM. Refer to the following.
- 5AT RE5R05A: Removal and Installation
- 7AT RE7R01B: Removal and Installation
YES
Error was detected in the TCM branch line.
NO
Repair the power supply and the ground circuit.