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Checking the electrical component
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Checking the electrical
component
Using the YDIS
When checking the TPS, ISC valve, high-
pressure fuel pump, fuel injector, or each
sensor, use the YDIS.
TIP:
• When deleting the diagnosis record in the
YDIS, make sure to check the time that the
trouble codes were detected.
• When checking the input voltage of a part,
the coupler or connector must be discon-
nected. As a result, the engine ECM deter-
mines that the part is disconnected and a
trouble code is detected. Therefore, make
sure to delete the diagnosis record after
checking the input voltage.
• To connect and operate the YDIS, see the
YDIS (Ver. 2.00 or later) instruction manual.
Measuring the peak voltage
When measuring the peak voltage, do not
touch any of the connections of the digital
tester probes.
When measuring the peak voltage
between the terminals of an electrical
component using the digital tester, make
sure that the leads do not contact any
metal parts. Otherwise, the electrical com-
ponent may short-circuit and be dam-
aged.
To check the electrical components or mea-
sure the peak voltage, use the special ser-
vice tools. A malfunctioning electrical
component can be checked easily by mea-
suring the peak voltage. The specified engine
speed when measuring the peak voltage is
affected by many factors such as fouled
spark plugs or a weak battery. If one of these
factors is present, the peak voltage cannot be
measured properly.
TIP:
• Before measuring the peak voltage, check
all of the wiring harnesses for corrosion.
Also, make sure that the wiring harnesses
are connected properly and that the battery
is fully charged.
• Use peak voltage adapter B with the rec-
ommended digital circuit tester.
• Connect the positive pin of peak voltage
adapter B to the positive terminal of the dig-
ital tester, and connect the negative pin to
the negative terminal.
• When measuring the peak voltage, set the
digital circuit tester to the DC voltage mode.
To check the electrical components or mea-
sure the peak voltage, use the special ser-
vice tools. A faulty electrical component can
be easily checked by measuring the peak
voltage. The specified engine speed when
measuring the peak voltage is affected by
many factors such as fouled spark plugs or a
weak battery. If one of these factors is
present, the peak voltage cannot be mea-
sured properly.
Digital circuit tester: 90890-03189
Peak voltage adapter B: 90890-03172
DC V
Summary of Contents for F150A
Page 1: ...SERVICE MANUAL 63P 28197 3P 12 F150A FL150A F150B FL150B ...
Page 4: ......
Page 48: ...2 3 Electronic control system Engine ECM component 2 3 4 6 5 1 8 7 10 9 11 12 14 15 16 13 17 ...
Page 110: ...3 41 Propeller selection MEMO ...
Page 129: ...4 18 Outboard motor troubleshooting MEMO ...
Page 175: ...5 44 PTT system 0 1 2 3 4 5 6 7 8 9 10 A MEMO ...
Page 247: ...7 22 Starter motor Terminal nut 3 9 N m 0 9 kgf m 6 6 ft lb ...
Page 385: ...8 78 Shimming counter rotation model 0 1 2 3 4 5 6 7 8 9 10 A MEMO ...
Page 449: ...9 62 PTT gear pump 0 1 2 3 4 5 6 7 8 9 10 A MEMO ...
Page 474: ...i 8 Index 0 1 2 3 5 6 7 8 9 10 10 A MEMO ...
Page 475: ......
Page 476: ...Oct 2011 2 ABE E ...