Suzuki SWIFT RS415 2017, Service Manual

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Body Electrical Control System: 10B-1
Body Electrical Control System
Precautions
Precautions in Diagnosing Trouble
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• 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” before inspection and observe what is
written there.
• Communication of ECM, TCM (if equipped), combination meter and BCM, is established by CAN (Controller Area
Network). Therefore, handle CAN communication line with care referring to “Precaution for CAN Communication
System: in Section 00”.
General Description
BCM General Description
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The Body electrical Control Module (BCM) is incorporated in junction block assembly. Do not attempt removal of BCM
from junction block assembly as it may cause contact failure.
The BCM incorporates relays and controllers which are used for the following systems and controls them.
• Power door lock
• Keyless entry
• Rear wiper
• Combination meter
• Interior light
• Warning buzzer
• Rear end door window defogger
• Rear end door opener
• Alarm indicator lamp
Also, the BCM has a function to cause the interior light 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.