On-Vehicle Inspection

2AZ-FE ENGINE CONTROL SYSTEM: MASS AIR FLOW METER: ON-VEHICLE INSPECTION

ON-VEHICLE INSPECTION
NOTICE:
- Perform the mass air flow meter inspection in accordance with the procedures below.
- Only replace the mass air flow meter when any foreign matter is adhering to the sensor and both MAF values in the Data List (with the engine stopped) are not within the normal operating range.

1. INSPECT MASS AIR FLOW METER
(a) Read the values using an intelligent tester or Techstream (MAF).
NOTICE:
- Perform the inspection with the vehicle indoors and on a level surface.
- Perform the inspection of the mass air flow meter while it is installed into the air cleaner case (installed on the vehicle).
- During the test, do not use the exhaust air duct to perform suction on the exhaust pipe.
(1) Connect an intelligent tester or Techstream to the DLC3.
(2) Turn the ignition switch ON (do not run the engine).
(3) Turn the tester ON.
(4) Select the following menu items:
1. Intelligent tester - Select: DIAGNOSIS / ENHANCED OBD II / DATA LIST / MAF.
2. Techstream - Select: Powertrain / Engine and ECT / Data List / MAF.
(5) Wait 30 seconds, and read the values on the intelligent tester.
Standard condition:






- If the result is not as specified, replace the mass air flow meter.
- If the result is within the specified range, inspect the mass air flow meter Inspection.