nissan Workshop Repair Guides

Nissan and Datsun Workshop Service and Repair Manuals

Auxiliary Air Valve (Idle Speed) > < Diagram Information and Instructions|Page 7487
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Mass Air Flow Sensor: Testing and Inspection

MASS AIR FLOW SENSOR 

1. Reconnect harness connectors disconnected.
2. Start engine and warm it up to normal operating temperature.
3. Check voltage between ECM terminal 54 (Mass air flow sensor signal) and ground.
4. If the voltage is out of specification, disconnect mass air flow sensor harness connector and connect it again.

Then repeat above check.

5. If NG, remove mass air flow sensor from air duct. Check hot wire for damage or dust.

Auxiliary Air Valve (Idle Speed) > < Diagram Information and Instructions|Page 7487