Ecu - Toyota 3S-GE Repair Manual

ENGINE — EFI SYSTEM EG'289
Lock
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27'
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H2944
ECU
ECU INSPECTION
HINT: The EFI circuit can be checked by measuring
the resistance and voltage at the wiring connectors of
the ECU.
IO4IO—0I
PREPARATION
Disconnect the 3 connectors from the ECU.
Remove the locks as shown in the illustration so that
the tester probe(s) can easily come in.
NOTICE: Pay attention to sections A and B in the illustra-
tion which can easily broken.
Reconnect the 3 connectors to the ECU.
1.
(8)
(b)
(C)
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4
000
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P13663
INSPECT VOLTAGE OF ECU
Turn the ignition switch ON.
2.
(a)
IIQI
Voltmeter "1 ' I'
ECU
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FITVT V +8
T P178133
(b) Measure the voltage between each terminal of the
wiring connectors.
HINT:
0 Perform all voltage measurements with the con-
nectors connected.
O Verify that the battery voltage is 11 V or more
when the ignition switch is ON.