15
Actuator Tests
Throt. Body Inj TBI
Connect the COM probe to the engine block, or negative
battery post. Connect the CH1 probe to the injector control
signal from the PCM (the pulsing side of the fuel injector).
Operate the engine as needed to make the driveability or
emissions problem occur. Make sure the critical
dimensions of amplitude, frequency, shape, and pulse
width are correct, repeatable, and consistent for the type
of fuel injector driver being tested and for the engine
condition present (RPM, load, O2 voltage, etc.)
PNP Fuel Injectors
Connect the COM probe to the engine block, or negative
battery post. Connect the CH1 probe to the injector control
signal from the PCM (the pulsing side of the fuel injector).
Operate the engine as needed to make the driveability or
emissions problem occur. Make sure the critical
dimensions of amplitude, frequency, shape, and pulse
width are correct, repeatable, and consistent for the type
of fuel injector driver being tested and for the engine
condition present (RPM, load, O2 voltage, etc.)
Carb Mix Sol. MC
Connect COM probe to the sensor’s ground circuit, engine
block, or negative battery post. Connect CH1 probe to
the mixture control signal from the PCM (pulsing side of
the mixture control solenoid/valve. Operate the engine
as needed to make the driveability or emissions problem
occur. Make sure the critical dimensions of amplitude,
frequency, shape, and pulse width are correct, repeatable,
and consistent for the type of fuel injector driver being
tested and for the engine condition present (RPM, load,
O2 voltage, etc.)
Bosch CIS Freq Valv
Connect COM probe to the sensor’s ground circuit, engine
block, or negative battery post. Connect CH1 probe to
the mixture control signal from the PCM (pulsing side of
the mixture control solenoid/valve. Operate the engine
as needed to make the driveability or emissions problem
occur. Make sure the critical dimensions of amplitude,
frequency, shape, and pulse width are correct, repeatable,
and consistent for the type of fuel injector driver being
tested and for the engine condition present (RPM, load,
O2 voltage, etc.)
(24 pages)
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