3-40 ENGINE CONTROL SYSTEM
ECM
Starter
motor
relay
COMPONENT INSPECTIONS
FUEL INJECTOR OPERATING SOUND (CRANKING)
1. Touch a sound scope or long blade screw driver to the fuel
injector body as shown.
2. Crank the engine and check for injector operating sound.
Injector operating sound: “Click”
FUEL INJECTOR OPERATING SOUND (INDIVIDUAL)
1. Disconnect the fuel injector wire, and connect the test cord.
# 09930-89260: Injector test cord A
2. Connect the Gray wire to the body ground.
3. Momentarily touch the Black/Yellow wire to the starter motor
relay right terminal (connected to the battery positive + ter-
minal), and check for injector operating sound.
Injector operating sound: “Click”
"
Connecting the fuel injector to the battery positive for
more than a few seconds may cause injector overheat-
ing and possible injector solenoid failure.
NOTE 1:
Disconnect the remote control wire harness, and connect the
tester probe to the terminal
A
(Gray wire).
NOTE 2:
Measure resistance with the shift in the NEUTRAL position.
FUEL INJECTOR OPERATING SIGNAL
# 09930-89950: 44-pin test cord
' Peak voltmeter Stevens CD-77
Tester range: NEG50
1. Connect the test cord as shown, then turn the ignition switch
ON.
2. Connect the tester probe - (Black) to the starter motor relay
right terminal (connected to the battery positive + terminal)
as shown.
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