Mass Air Flow Meter: Inspection: Inspection

INSPECT MASS AIR FLOW METER

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

Fig 1: Identifying Platinum Hot Wire (Heater)
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

OK

There is no foreign matter.
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*1 Platinum Hot Wire (Heater)

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

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

Fig 2: Platinum Hot Wire (Heater)

GTY350551

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Standard Resistance

Tester Connection	Condition	Specified Condition
1 (THA) - 2 (E2)	-20°C (-4°F)	13.6 to 18.4 kΩ
1 (THA) - 2 (E2)	20°C (68°F)	2.21 to 2.69 kΩ
1 (THA) - 2 (E2)	60°C (140°F)	0.49 to 0.67 kΩ

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*a	Mass Air Flow Meter

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