Mass Air Flow (MAF) Meter: Inspection

Remove the 2 screws and MAF meter.

Fig 1: Identifying MAF Meter

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. Using an ohmmeter, measure the resistance between terminals THA and E2.
   Fig 2: Measuring Resistance Between Terminals THA & E2 Using Ohmmeter

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   Fig 3: MAF Meter Resistance Table

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   If the resistance is not as specified, replace the MAF meter.

2. Inspect for operation.
   1. Connect the MAF meter connector.
   2. Connect the negative (-) terminal cable to the battery.
   3. Turn the ignition switch ON.
   4. Using a voltmeter, connect the positive (+) tester probe to terminal VG and negative (-) tester probe to terminal E2G.
   5. Blow air into the MAF meter, and check that the voltage fluctuates.

      If operation is not as specified, replace the MAF meter.

   Fig 4: Checking Voltage Fluctuation
   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   6. Turn the ignition switch OFF.
   7. Disconnect the negative (-) terminal cable from the battery.
   8. Disconnect the MAF meter connector.

Install the MAF meter with the 2 screws.

1. Torque: 1.68 N.m (17 kgf.cm, 15 in.lbf)