Battery; Electrical Circuit Inspection Procedure; Open Circuit Check - Suzuki GSX-R1000 Service Manual

Manuals by Motomatrix / The Solution For Lost Motorcycle Coded Keys
• When disconnecting and connecting the coupler,
make sure to turn OFF the ignition switch, or
electronic parts may get damaged.
1. Ignition switch

Battery

• Battery connection in reverse polarity is strictly
prohibited. Such a wrong connection will damage the
components of the FI system instantly when reverse
power is applied.
• Removing any battery terminal of a running engine is
strictly prohibited. The moment such removal is made,
damaging counter electromotive force will be applied
to the electronic unit which may result in serious
damage.
email: info@motomatrix.co.uk / www.motomatrix.co.uk
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• Before measuring voltage at each terminal, check to
make sure that battery voltage is 11 V or higher.
Terminal voltage check with a low battery voltage will
lead to erroneous diagnosis.
• Never connect any tester (voltmeter, ohmmeter, or
whatever) to the electronic unit when its coupler is
disconnected. Otherwise, damage to electronic unit
may result.
• Never connect an ohmmeter to the electronic unit with
its coupler connected. If attempted, damage to ECM
or sensors may result.
• Be sure to use a specified voltmeter/ohmmeter.
Otherwise, accurate measurements may not be
obtained and personal injury may result.

Electrical Circuit Inspection Procedure

While there are various methods for electrical circuit
inspection, described here is a general method to check
for open and short circuit using an ohmmeter and a
voltmeter.

Open circuit check

Possible causes for the open circuit are as follows. As
the cause can exist in the connector/coupler or terminal,
they need to be checked carefully.
• Loose connection of connector/coupler.
• Poor contact of terminal (due to dirt, corrosion or rust,
poor contact tension, entry of foreign object etc.).
• Wire harness being open.
• Poor terminal-to-wire connection.
When checking system circuits including an electronic
control unit such as ECM, etc., it is important to perform
careful check, starting with items which are easier to
check.
1) Disconnect the negative (–) cable from the battery.
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