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Mass Air Flow Meter: Inspection: Inspection

INSPECT MASS AIR FLOW METER SUB-ASSEMBLY

Perform a visual check for any foreign matter on the platinum hot wire (heater) of the mass air flow meter shown.

Fig 1: Inspecting Mass Air Flow Meter Sub-Assembly
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

OK

There is no foreign material.

Check the intake air temperature sensor (Built into the MAF meter).

Measure the resistance according to the value(s) in the table below.

Fig 2: Identifying Mass Air Flow Meter Connector

GTY263347

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Standard resistance

Tester Connection	Condition	Specified Condition
5 (THA) - 4 (E2)	-20°C (-4°F)	13.6 to 18.4 kΩ
	20°C (68°F)	2.21 to 2.69 kΩ
	60°C (140°F)	0.49 to 0.67 kΩ

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