Toyota 2GR-FE Manual page 292

ES–136
Result
Mass Air Flow Rate (gm/s)
Between 1.0 and 270.0 (*1)
A
ES
2
INSPECT MASS AIR FLOW METER (POWER SOURCE VOLTAGE)
Wire Harness Side Front View:
+B (+)
C2 MAF Meter Connector
OK
3
INSPECT MASS AIR FLOW METER (VG VOLTAGE)
MAF Meter
OK
2GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEM
0.0
271.0 or more
(a) Disconnect the C2 mass air flow (MAF) meter connector.
(b) Turn the ignition switch on (IG).
(c) Measure the voltage according to the value(s) in the
(d) Reconnect the MAF meter connector.
A127724E07
(a) Inspect the output voltage.
VG E2G +B
Tester Connection
5 4 3 2 1
5 (VG) - 4 (E2G)
A127786E02
*1: The value must be changed when the throttle valve is
open or closed.
B
Go to step 8
C
CHECK FOR INTERMITTENT PROBLEMS
(See page ES-33)
table below.
Standard voltage
Tester Connection
+B (C2-3) - Body ground
NG
Go to step 5
(1) Apply battery voltage across terminals +B and E2G.
(2) Connect the positive (+) tester probe to terminal VG,
and negative (-) tester probe to terminal E2G.
(3) Measure the voltage between the terminals.
Standard voltage
NG
REPLACE MASS AIR FLOW METER
Proceed to
A
B
C
Specified Condition
9 to 14 V
Specified Condition
0.2 to 4.9 V