Mass Air Flow (Maf) Meter Inspection - Lexus 2005 IS300 User Manual

THA
E2
VG
2005 LEXUS IS300 (RM1140U)
SFI
INSPECTION
1. REMOVE MAF METER
(a) Disconnect the MAF meter connector.
(b) Remove the 2 screws, MAF meter and gasket.
B11910
2. INSPECT MAF METER RESISTANCE
Using an ohmmeter, measure the resistance between terminals
THA and E2.
If the resistance is not as specified, replace the MAF meter.
B11911
3. INSPECT MAF METER OPERATION
E2G
(a) Connect the MAF meter connector.
(b) Connect the negative (-) terminal cable to the battery.
(c) Turn the ignition switch ON.
(d) Using a voltmeter, connect the positive (+) tester probe to
terminal VG, and negative (-) tester probe to terminal
E2G.
(e) Blow air into the MAF meter, and check that the voltage
fluctuates.
B11912
If operation is not as specified, replace the MAF meter.
(f) Turn the ignition switch OFF.
(g) Disconnect the negative (-) terminal cable from the bat-
tery.
(h) Disconnect the MAF meter connector.
4. REINSTALL MAF METER
(a) Install the gasket to the MAF meter.
(b) Install the MAF meter with the 2 screws.
Torque: 10.7 N·m (109 kgf·cm 8 ft·lbf)
(c) Connect the MAF meter connector.
- MASS AIR FLOW (MAF) METER
Resistance
13.6 - 18.4 kΩ
2.21 - 2.69 kΩ
0.493 - 0.667 kΩ
Author :
SF-31
SF0NK-07
Temperature
-20 °C (-4°F)
20°C (68°F)
60°C (140°F)
Date :
1412