DTC 12: Mass Airflow (MAF) Sensor
- Check Power Supply
Turn ignition off and disconnect MAF sensor harness connector. Turn ignition on. Measure voltage between MAF sensor harness connector terminal "b" (Black/White wire) and ground. See Fig 1
and Fig 2
. If battery voltage is present, go to next step. If battery voltage is not present, verify harness continuity between MAF sensor and ECM, and MAF sensor and ECCS relay. Repair harness or connectors as necessary.
- Check Input Signal Circuit
Turn ignition off and disconnect ECM harness connector. Check continuity between MAF sensor connector terminal "e" (White wire) and ECM terminal No. 27. If continuity is present, go to next step. If continuity is not present, repair harness or connectors as necessary. See Figure
, Figure
and Fig 2
.
- Check Component
Inspect MAF sensor. See SYSTEM/COMPONENT TESTS
article. Replace MAF sensor if necessary and perform FINAL CHECK
.
Courtesy of NISSAN MOTOR CO., U.S.A.
Courtesy of NISSAN MOTOR CO., U.S.A.
Courtesy of NISSAN MOTOR CO., U.S.A.