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 STARTER RELAY
- Turn ignition switch ON. (Never start engine.)
- Check voltage between the IPDM E/R connector terminal and ground.
IPDM E/R
Ground
Condition
Voltage
Connector
Terminal
E122
48
Ground
Selector lever: "N" and "P"
Battery voltage
Selector lever: "R" and "D"
Approx. 0 V
Is the inspection results normal?
YES
- Check starter relay circuit.
Refer to Wiring Diagram - With VQ40DE .
NO
GO TO 2.
- CHECK HARNESS BETWEEN A/T ASSEMBLY AND IPDM E/R
- Turn ignition switch OFF.
- Disconnect A/T assembly connector and IPDM E/R connector.
- Check continuity between A/T assembly harness connector terminal and IPDM E/R harness connector terminal.
A/T assembly
IPDM E/R
Continuity
Connector
Terminal
Connector
Terminal
F9
9
E122
48
Existed
- If OK, check harness for short to ground and short to power.
Is the inspection results normal?
YES
GO TO 3.
NO
Repair or replace damaged parts.
- CHECK TERMINAL CORD ASSEMBLY
- Remove control valve with TCM. Refer to Exploded View .
- Disconnect A/T assembly connector and TCM connector.
- Check continuity between A/T assembly harness connector terminal and TCM connector terminal.
A/T assembly
TCM
Continuity
Connector
Terminal
Connector
Terminal
F9
9
F502
8
Existed
- If OK, check harness for short to ground and short to power.
- Reinstall any part removed.
Is the inspection results normal?
YES
GO TO 4.
NO
Repair or replace damaged parts.
- DETECT MALFUNCTIONING ITEM
Check the following items:
- Starter relay, Refer to System Description .
- IPDM E/R, Refer to Physical Values .
Is the inspection results normal?
YES
Replace the control valve with TCM. Refer to Exploded View .
NO
Repair or replace damaged parts.