Injectors - Toyota Supra 1990 Manual

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Injection
~
Ohmmeter
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EFI SYSTEM - Fuel System
FI-83
FI1635
Injectors
Connector Terminal
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Fuel
Coil
GSOO75
ON-VEHICLE INSPECTION
1. CHECK INJECTOR OPERATION
2.
Check the operating sound from each injector.
(a) With the engine running or cranking, use a sound
scope to check that there is normal operating noise
in proportion to engine rpm.
(b) If you have no sound scope, you can check the injec-
tor transmission operation with your finger.
If no sound or an unusual sound is heard, check the wiring
connector, injector, resistor (7M-GTE) or injection signal
from the ECU.
INSPECT RESISTANCE OF INJECTOR
(a) Disconnect the injector connector.
(b) Using an ohmmeter, check the resistance of both ter-
minals.
Resistance:
7M-GE Approx. 13.8 0
7M-GTE 2.0 - 3.8 0
If the resistance is not as specified, replace the injector.
(c) Reconnect the injector connector.