BCM General Description

The Body electrical Control Module (BCM) incorporates relays and controllers which used for the following systems and controls them.

• Power door lock
• Keyless entry
• Lighting
• Rear wiper and washer and Combination meter
• Interior light
• Warning buzzer

For the each system diagnosis, refer to POWER DOOR LOCK SYSTEM CHECK , KEYLESS ENTRY SYSTEM CHECK , HEADLIGHTS SYMPTOM DIAGNOSIS , FRONT FOG LIGHTS SYMPTOM DIAGNOSIS , REAR WIPER AND WASHER SYMPTOM DIAGNOSIS , TCM-BCM CAN COMMUNICATION CIRCUIT INSPECTION and INTERIOR LIGHTS SYMPTOM DIAGNOSIS .

Using the SUZUKI SCAN TOOL (TECH2), BCM monitors the input signal from each switch and perform the operation check of each system. This helps to determine the trouble points easily.