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 ENGINE COOLANT TEMPERATURE SENSOR 2 POWER SUPPLY
- Turn ignition switch OFF.
- Disconnect engine coolant temperature (ECT) sensor 2 harness connector.
- Turn ignition switch ON.
- Check the voltage between ECT sensor 2 harness connector and ground.
+
-
Voltage
(Approx.)
ECT sensor 2
Connector
Terminal
F93
1
Ground
5 V
Is the inspection result normal?
YES
GO TO 2.
NO
GO TO 4.
- CHECK ENGINE COOLANT TEMPERATURE SENSOR 2 GROUND CIRCUIT
- Turn ignition switch OFF.
- Disconnect ECM harness connector.
- Check the continuity between ECT sensor 2 harness connector and ECM harness connector.
+
-
Continuity
ECT sensor 2
ECM
Connector
Terminal
Connector
Terminal
F93
2
F78
43
Existed
- Also check harness for short to ground to power.
Is the inspection result normal?
YES
GO TO 3.
NO
Repair or replace error-detected parts.
- CHECK ENGINE COOLANT TEMPERATURE SENSOR 2
Check the engine coolant temperature sensor 2. Refer to Component Inspection (Engine Coolant Temperature Sensor 2) .
Is the inspection result normal?
YES
INSPECTION END
NO
Replace engine coolant temperature sensor 2. Refer to Exploded View .
- CHECK ENGINE COOLANT TEMPERATURE SENSOR 2 POWER SUPPLY CIRCUIT
- Turn ignition switch OFF.
- Disconnect ECM harness connector.
- Check the continuity between ECT sensor 2 harness connector and ECM harness connector.
+
-
Continuity
ECT sensor 2
ECM
Connector
Terminal
Connector
Terminal
F93
1
F79
65
Existed
- Also check harness for short to ground.
Is the inspection result normal?
YES
Perform the trouble diagnosis for power supply circuit.
NO
Repair or replace error-detected parts.