A84869
ECM
THAF
ETHAF
A8
Mass Air Flow Meter
Connector
A84870
ECM
THAF
ETHAF
A8
Mass Air Flow Meter
Connector
G34806
E23
ECM C onnector
THAF
--
DIAGNOSTICS
ECD SYSTEM (1ND -- TV)
05 -- 67
COROLLA Supplement (RM1129E)
4 READ VALUE USING I NTELLIGENT TESTER II(CHECK FOR SHORT IN WIRE
HARNESS)
(a) Disconnect the A8 mass air flow meter connector.
(b) Connect the intelligent tester ll to the DLC3.
(c) Turn the ignition switch to ON and turn the intelligent tes -
ter l l ON.
(d) Select the following menu items: Powertrain / Engine and
ECT / Data List / Intake Air.
(e) Read the v alue.
Standard:
Temperature value: Less than -- 40
°
C (--40
°
F)
(f) Reconnect the mass air flow meter connector.
OK REPLACE MASS AIR FLOW METER
NG
5 READ VALUE USING I NTELLIGENT TESTER II(CHECK FOR SHORT IN ECM)
(a) Disconnect the E23 ECM connector.
(b) Disconnect the A8 mass air flow meter connector.
(c) Turn the ignition switch to ON and turn the intelligent tes -
ter l l ON.
(d) Select the following menu items: Powertrain / Engine and
ECT / Data List / Intake Air.
(e) Read the v alue.
Standard:
Temperature value: Less than -- 40
°
C (--40
°
F)
(f)
Reconnect the ECM sensor connector.
(g)
Reconnect the mass air flow meter connector.
OK
REPAIR
OR
REPLACE
HARNESS
OR
CONNECTOR
NG
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TOYOTA COROLLA REPAIR MANUAL SUPP 1129E