Service Manual

ELECTRICAL SYSTEM 9-9
Precautions
There are a number of important precautions that you
must follow when servicing electrical systems. Learn and
observe all the rules below.
○
Do not reverse the battery cable connections. This will
burn out the diodes in the electrical parts.
○
Always check the battery condition before judging other
parts of the electrical system. A fully charged battery is
necessary for conducting accurate electrical system tests.
○
Do not hit the electric parts with a hammer or do not drop
the electric parts. These may result in the electric parts
damage or breakage.
○
To prevent damage to electrical parts, do not disconnect
the battery cables or any other electrical connections
when the engine switch is on, or while the engine is
running.
○
Because of the large amount of current, never keep the
engine switch turned to the start position when the starter
motor will not start, or the current may burn out the starter
motor windings.
○
Take care not to short the leads that are directly con-
nected to the battery positive (+) terminal to the chassis
ground.
○
Troubles may involve one or all items in some cases.
Never replace a defective part without determining what
CAUSED the failure. If the failure was occurred by an-
other item or some other items, repair and/or replace the
item(s). Or the failure may happen again.
○
Make sure all connectors in the circuit are clean and tight,
and examine the leads for signs of burning, fraying, etc.
Poor leads and bad connections will affect electrical sys-
tem operation.
○
Measure the coil and the winding resistance when the
parts are cold (at room temperature).
○
Electrical connectors:
Connectors [A]
Connectors [B]