On-Vehicle Inspection

NOTE:

Perform the MAF meter inspection according to the procedures below.
Only replace the MAF meter when the MAF value in the DATA LIST (with the engine stopped) is not within the normal operating range or there is foreign matter on the MAF meter platinum hot wire (heater).

INSPECT MASS AIR FLOW METER SUB-ASSEMBLY

Read the value using the Techstream (MAF).

NOTE:

Perform the inspection with the vehicle indoors and on a level surface.
Perform the inspection of the MAF meter while it is installed to the air cleaner case (installed to the vehicle).
During the test, do not use the exhaust air duct to perform suction on the exhaust pipe.

Turn the engine switch on (IG) (do not run the engine).
Turn the tester on.
Enter the following menus: Powertrain/Engine/Data List/All Data/MAF #1 or MAF #2.

Wait 30 seconds, and read the values on the intelligent tester or Techstream.

Standard

CONDITION CHART

Item	Condition	Specified Condition
MAF#1	Engine not running 30 seconds after engine switch is turned on (IG)	Below 0.30 g/sec.
MAF #2	Engine not running 30 seconds after engine switch is turned on (IG)	Below 0.34 g/sec.

If the result is not as specified, replace the mass air flow meter sub-assembly.

If the result is within the specified range, inspect the mass air flow meter sub-assembly (See INSPECTION ).