Surtek MUL04 Manual De Usuario Y Garantía página 39

a. Move the connectors of the ignition system from the engine. Refer to the
ignition system movement procedure in various kinds of automotive manuals
for the details..
WARNING
• Some of Chrysler's products use a spark plug high voltage damper with "positive
lock" end electrodes, which can only be moved out of the distributor board. If it
is moved out of anywhere else, some damage will result. Refer to various kinds
of automotive manuals for the details.
b. Set the rotary switch of the meter to the 200 kΩ. As prompted at the LCD
connect terminal, insert the red test lead into the W terminal and the black
one into the COM terminal..
c. Connect the red and black test lead probes in parallel to the two ends of
the high-voltage damper and observe the reading. The normal resistance is
generally in a range of 3 kΩ to 50 kΩ. In bending the lead, the reading should
remain unchanged..
3. Hall Switch/Sensor Testing (see Fig. 10)
Fig. 10
When the tach and dwell are tested in the computer of the automobile, a Hall
sensor is used. The Hall sensor is normally used in the ignition system to detect
the position of the camshaft so that the computer of the automobile can set the
optimal time for the ignition and the opening of the fuel injector.
a. Move the Hall sensor out of the automobile and see the details of the
operation in various kinds of automotive manuals.
b. Connect the positive pole of the 9 V battery to the source end of the sensor
and the negative pole to the ground end of the sensor by referring the details
to the positions of the source and ground ends of the sensor in various kinds
of automotive manuals.
c. Set the rotary switch of the meter to 200 Ω . As prompted at the LCD connect
terminal, insert the red test lead into the W terminal and the black one into
the COM terminal.
d. Connect the red and black test lead probes in parallel to the signal connect
terminal and ground end of the sensor and the Meter should display a small
ohm value..
e. When a metal plate (blade, steel tape, etc.) is inserted into a concave magnetic
pole of the sensor, the display of the meter will be enlarged or overloaded; if
the metal plate is moved away, the display will become smaller, which proves
that the sensor is satisfactory.
4. Magnetic Resistance Sensor (see Fig. 11)
The functions of a magnetic resistance sensor is similar to those of a Hall sensor
and the testing methods of both sensors are also similar. Their normal resistance is
generally in a range of 150W to 1 kW. Refer to the ranges of resistance in various
kinds of automotive manuals for the details.
E N G L I S H •
Use r's M a nual
39