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 FUEL INJECTOR POWER SUPPLY CIRCUIT
- Turn ignition switch OFF.
- Disconnect fuel injector harness connector.
- Turn ignition switch ON.
- Check the voltage between fuel injector harness connector and ground.
+
-
Voltage
Fuel injector
Cylinder
Connector
Terminal
1
F212
1
Ground
Battery voltage
2
F18
1
3
F211
1
4
F20
1
5
F210
1
6
F22
1
Is the inspection result normal?
YES
GO TO 2.
NO
Repair or replace error-detected parts.
- CHECK FUEL INJECTOR OUTPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
- Turn ignition switch OFF.
- Disconnect ECM harness connector.
- Check the continuity between fuel injector harness connector and ECM harness connector.
+
-
Continuity
Fuel injector
ECM
Cylinder
Connector
Terminal
Connector
Terminal
1
F212
2
F54
17
Existed
2
F18
2
16
3
F211
2
22
4
F20
2
12
5
F210
2
11
6
F22
2
21
- Also check harness for short to ground and short to power.
Is the inspection result normal?
YES
GO TO 3.
NO
Repair or replace error-detected parts.
- CHECK FUEL INJECTOR
Refer to Component Inspection .
Is the inspection result normal?
YES
GO TO 4.
NO
Replace malfunctioning fuel injector. Refer to Removal and Installation .
- CHECK INTERMITTENT INCIDENT
Check intermittent incident. Refer to Intermittent Incident .
Is the inspection result normal?
YES
Perform trouble diagnosis for power supply circuit.
NO
Repair or replace error-detected parts.