940 L4-2.3L SOHC VIN 88 B230F (1992)
A clip-on ammeter may be used instead of a shunt. However, this type may not be used to measure a.c. current in uninsulated leads or in the vicinity of
equipment generating a strong magnetic field.
Resistance measurement
Disconnect other leads connected to the test component to ensure that other current sources cannot affect the reading. If the connections are good, the
instrument will indicate 0 ohm. For an open-circuit, the reading will be infinity. Since the instrument has a built-in battery, it must be calibrated to
compensate for battery condition. (See instrument / ohm meter instructions.)
Maintenance
Use known resistances to check the instrument readings at least once per month, or if the instrument is suspected to be reading incorrectly. Ensure that
the instrument is stored away from strong heat, shocks, impact and high humidity.
Instrument housings are often made of plastic for durability and toughness.
However, this means that the housing may acquire a static charge if cleaned with a dry cloth, causing inaccurate readings. To prevent this, always clean
the instrument with a slightly moistened cloth. Never replace instrument fuses with car fuses. See the instrument manufacturer's instructions for other
information on specifications, operation, maintenance etc.
