Suzuki GSX1300BK B-King Service Manual page 12

Battery
• Battery connection in reverse polarity is strictly
prohibited. Such a wrong connection will damage the
components of the FI and ABS systems 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.
• 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.
I718H1000004-01
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, ABS control unit/HU, etc., it is
important to perform careful check, starting with items
which are easier to check.
1) Disconnect the negative (–) cable from the battery.
2) Check each connector/coupler at both ends of the
circuit being checked for loose connection. Also
I310G1000011-01
check for condition of the coupler lock if equipped.
1. Sensor
I310G1000012-02
"A"
"A"
1
"A": Check for loose connection
Precautions: 00-4
ECM
I718H1000005-02