Diagnosis Procedure
WARNING: This page is about a different car, the 2018 Nissan Titan XD and 2018 Nissan Titan. However, it is still accessible from the selected car via links, so may be relevant.
- CHECK INTAKE AIR TEMPERATURE SENSOR POWER SUPPLY CIRCUIT
- Disconnect mass air flow (MAF) sensor (intake air temperature sensor is built-in) harness connector.
- Turn ignition switch ON.
- Check the voltage between MAF sensor harness connector and ground.
MAF sensor
Ground
Voltage (V)
Connector
Terminal
F73
2
Ground
Approx. 5
Is the inspection result normal?
YES
GO TO 2 .
NO
Repair open circuit, short to ground or short to power in harness or connectors.
- CHECK INTAKE AIR TEMPERATURE SENSOR GROUND CIRCUIT FOR OPEN AND SHORT
- Turn ignition switch OFF.
- Disconnect ECM harness connector.
- Check the continuity between MAF sensor harness connector and ECM harness connector.
MAF sensor
ECM
Continuity
Connector
Terminal
Connector
Terminal
F73
1
F78
42
Existed
- Also check harness for short to ground and short to power.
Is the inspection result normal?
YES
GO TO 3 .
NO
Repair open circuit, short to ground or short to power in harness or connectors.
- CHECK INTAKE AIR TEMPERATURE SENSOR
Refer to Component Inspection (Intake Air Temperature Sensor) .
Is the inspection result normal?
YES
INSPECTION END
NO
Replace mass air flow sensor (with intake air temperature sensor).