Mike's Workshop Manuals: Service manuals for every vehicle
Home >> Infiniti >> 2003 >> G35 4D Sedan, Standard >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Self-Diagnostics >> Diagnostic Tests >> DTC P0101: Mass Airflow Sensor Circuit Range/Performance Problem >> DTC Confirmation Test "B" (Using Generic Scan Tool)

DTC Confirmation Test "B" (Using Generic Scan Tool)

NOTE: Use the following test to check overall function of MAF sensor circuit. During this test, 1st trip DTC may not be confirmed.
NOTE: If a DTC confirmation test has been previously performed, turn ignition off and wait at least 10 seconds before performing next DTC confirmation test.
  1. Start engine and warm to normal operating temperature.
  2. Select MODE 1 with scan tool.
  3. Observe MAF reading on scan tool.
  4. Check for MAF sensor signal value rise in response to increase to about 4000 RPM in engine speed.
  5. If voltage does not increase as engine speed increases, go to DIAGNOSTIC PROCEDURE  . If voltage increases as engine speed increases, system is okay at this time.
scientia non olet · About Mike's Workshop Manuals