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Body Electrical Control System
Precautions in Diagnosing Trouble
• Diagnostic information stored in BCM memory can be
cleared as well as checked by using SUZUKI scan
tool. Before using scan tool, read its Operator's
(Instruction) Manual carefully to have good
understanding as to what functions are available and
how to use it.
• Be sure to read "Precautions for Electrical Circuit
Service: in Section 00 in related manual" before
inspection and observe what is written there.
BCM General Description
The BCM incorporates relays and controllers which are
used for the following systems and controls them.
• Power door lock (if equipped)
• Keyless entry (if equipped)
• Door lock function of keyless start system (if
equipped)
• Rear wiper
• Combination meter
• Interior light / luggage room light
• Warning buzzer
• Rear end door window defogger and door mirror
heater (if equipped)
• DRL (if equipped)
• Auto-on headlight (if equipped)
• Front fog light (if equipped)
• Theft deterrent light
Precautions
• Communication of ECM, TCM (if equipped), BCM,
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ABS or ESP® control module (if equipped), 4WD
control module (if equipped), keyless start control
module (if equipped), steering angle sensor (if
equipped) and combination meter is established by
CAN (Controller Area Network).
Therefore, be sure to read "Precaution for CAN
Communication System: in Section 00 in related
manual" before inspection and handle CAN
communication line.
General Description
Also, the BCM has a function to cause the interior light
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and open door warning lamp in the combination meter to
turn off when any door is left open for longer than 15
minutes to reduce wasteful battery consumption.
In addition, it is possible to check operation of actuator
which is controlled by BCM by using the output test
function of SUZUKI scan tool to operate actuator
simulatively.
Body Electrical Control System:
10B-1
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Troubleshooting
