Urrea UD226 Manual De Usuario Y Garantía página 46

E N G L I S H
Battery Ground
Voltage Drop Test
This test checks for engine ground
efficiency.
To check voltage drop:
• Set the rotary switch to voltage ( ).
• Touch the Black test probe to the
negative (–) battery post and the Red test
probe to the positive (+) battery post; this
reading will be the base voltage to reading
against.
Move and connect:
• Red test probe to a clean spot on the
engine block.
Disable the ignition so the engine doesn't
start and crank the engine for 4 ~ 5
seconds.
This connection has 2 connectors, 1 wire,
1 ground and 1 cable terminal to battery
post so a voltage drop of more than 500mV
would indicate a poor ground circuit.
Test again after cleaning and inspecting
the battery cable connections and the
ground.
46
to Engine Block
ENGINE
BLOCK
RED (+)
BLACK (+)
NOTE: Repeat this test when the engine is
thoroughly warmed up. Heat expansion of
metal may cause voltage drop to increase.
Battery Ground to Complete Starter Circuit
(+) Voltage Drop Test
This test checks for battery power efficiency
to the starter motor system including the
starter solenoid. Check the resistance in
the starter circuit. Even very resistance in
the starter circuit can cause the starter turn
slowly, because of low voltage.
To check voltage drop:
• Set the rotary switch to voltage ( ).
• Touch the Black test probe to the negative
(–) battery post and the Red test probe to
the positive (+) battery post to establish
the base voltage that you will compare test
voltage against.
Connect:
• Black test probe direct to the positive (+)
terminal on the starter motor.
• Red test probe to the positive (+) battery
post.
Disable the ignition so the engine doesn't
start and crank the engine for 4 ~ 5
seconds.
This connection has 4 connectors, 2 wires
and 2 solenoid connections so a voltage
drop of more than 800mV would indicate
a poor circuit.
Test again after cleaning and inspecting
the battery, starter cables, solenoid and
cable connections.
A defective starter solenoid cause an
excessive voltage drop. Check the cables