Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSSUZUKI2013SX4 LE, STANDARD TRANSREPAIR AND DIAGNOSISELECTRICALBODY ELECTRICALBODY ELECTRICAL CONTROL SYSTEM
2013 Suzuki SX4 LE, Standard Trans
Body Electrical Control System
2013 Suzuki SX4 LE, Standard TransSECTION Body Electrical Control System
- Precautions
- General Description
- Schematic and Routing Diagram
- Component Location
- Diagnostic Information and Procedures
- BCM Self-Diagnosis Function
- Body Electrical Control System Check
- Scan Tool Data
- BCM
- Scan Tool Data Definitions
- Notes
- Battery Voltage (V)
- ECT (Engine Coolant Temperature) (°C, °F)
- Fuel Consumption (km/l)
- Vehicle Speed (km/h, mph)
- Engine Speed (RPM)
- Driv Door SW (Driver side door switch) (Open/Close)
- Pass Door SW (Other than driver side door switch) (Open/Close)
- Rear End Door Opener (Rear end door opener switch) (ON/OFF)
- Trunk SW (Trunk lid switch) (ON/OFF)
- Rear Defogger SW (Rear end door window/back window defogger switch) (ON/OFF)
- Front Fog Light SW (Front fog light switch) (ON/OFF)
- Door Key SW (Lock) (Door key cylinder switch (lock side)) (ON/OFF)
- Door Key SW (Unlock) (Door key cylinder switch (unlock side)) (ON/OFF)
- Manual SW (Manual door lock switch (lock side)) (ON/OFF)
- Manual SW (Manual door lock switch (unlock side)) (ON/OFF)
- Key Reminder SW (Key reminder switch) (Pulled/Key in)
- Headlight SW (Headlight switch) (ON/OFF)
- Tail Light SW (Lighting switch) (ON/OFF)
- Driv Seatbelt SW (Driver seat belt switch) (Fasten/Unfasten)
- A/B Signal Error (detected/Not dete)
- Brake Fluid Level (Low/Normal)
- Parking Brake SW (Parking brake switch) (ON/OFF)
- Charge Light (ON/OFF)
- Oil Pressure SW (ON/OFF)
- A/C SW (On/Off)
- Ignition 1 Switch (Ignition switch ON position) (ON/OFF)
- ACC Switch (Ignition switch ACC position) (ON/OFF)
- Rear Wiper ON SW (Rear wiper ON switch) (ON/OFF)
- Rear Wiper INT SW (Rear wiper INT switch) (ON/OFF)
- Rear Washer SW (Rear washer switch) (ON/OFF)
- Security Alarm (Active/Passive)
- Diagnosis Using Output Test Function of SUZUKI Scan Tool
- DTC Table
- DTC Check
- DTC Clearance
- BCM Power Circuit and Ground Circuit Check
- DTC B1133 (No. 1133): Battery Voltage Too High
- DTC B1141/B1142 (No. 1141/1142): Outside Air Temperature (Ambient Temp.) Sensor Circuit Malfunction
- DTC B1150 (No. 1150): Air Bag Communication Circuit Malfunction
- DTC B1157 (No. 1157): Air Bag Deployment Signal Input
- DTC B1170 (No. 1170): EEPROM Access Error
- DTC U0073 (No. 0073): Control Module Communication Bus Off
- DTC U0100 (No. 0100): Lost Communication with ECM
- DTC U0101 (No. 0101): Lost Communication with TCM
- DTC U0144 (No. 0144): Lost Communication with Keyless Start Control Module
- DTC U0151 (No. 0151): Lost Communication with Restraints Control Module
- DTC U0155 (No. 0155): Lost Communication with Instrument Panel Cluster (IPC) Control Module
- Inspection of BCM and Its Circuits
- Notes
- Voltage Check
- Notes
- BCM connector "G04"
- BCM connector "G05"
- BCM connector "G06"
- Reference Waveform
- Reference waveform No. 1
- Reference waveform No. 2
- Reference waveform No. 3
- Reference waveform No. 4
- Reference waveform No. 5
- Reference waveform No. 6
- Reference waveform No. 7
- Reference waveform No. 8
- Reference waveform No. 9
- Reference waveform No. 10
- Repair Instructions
- Special Tools and Equipment
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.