A84676
Vo l t m e t e r
Component Side:
Mass Air Flow Meter
A54396
Wire Harness Side:
Mass Air Flow Meter Connector
E2G
A8
Front View
G34806
E23
ECM C onnector
VG
EVG
05 -- 60
--
DIAGNOSTICS
ECD SYSTEM (1ND -- TV)
COROLLA Supplement (RM1129E)
9 I NSPECT M ASS AIR FLOW M ETER
(a) Remove the mass air flow meter.
(b) Apply battery voltage across terminals 1 (+B) and 2
(E2G).
(c) Using a v oltmeter, c onnect the positive (+) tester probe to
terminal 3 (VG), and negative ( -- ) tester probe to terminal
2 (E2G).
(d) Blow air into the mass air flow meter.
OK: The voltage fluctuates.
(e)
Reinstall the mass air flow meter.
NG
REPLACE MASS AIR FLOW METER
OK
10
CHECK HARNESS AND CONNECTOR(MASS AIR FLOW METER -- ECM)
(a)
Disconnect the A8 mass air flow meter connector.
(b)
Disconnect the E23 ECM connector.
(c)
Check the resistance.
Standard (Check for open):
Tester Connection
Specified Condition
E2G (A8--2) -- EVG (E23--15)
Below 1
Ω
(d)
Reconnect the mass air flow meter connector.
(e)
Reconnect the ECM connector.
NG
REPAIR
OR
REPLACE
HARNESS
OR
CONNECTOR
OK
REPLACE MASS AIR FLOW METER
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TOYOTA COROLLA REPAIR MANUAL SUPP 1129E