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.
2007 Suzuki SX4 Base, AutomaticFACTORY OEM SERVICE PROCEDURE
Body Electrical Control System
- Precautions
- General Description
- Schematic and Routing Diagram
- Component Location
- Diagnostic Information and Procedure
- BCM Self-Diagnosis Function
- Body Electrical Control System Check
- Scan Tool Data
- Notes
- Scan Tool Data Definitions
- Vehicle Speed (km/h, mph)
- Outside air Temp (°C, °F)
- Battery Voltage (V)
- Coolant Temp (Engine Coolant Temperature) (°C, °F)
- Engine Speed (RPM)
- Fuel Consumption (km/l)
- Key Reminder Sw (Key reminder switch) (Pulled / Key in)
- Rear Wiper Sw (Rear wiper switch) (ON / INT / OFF)
- Door key Sw (Door key cylinder switch) (Lock / Neutral / Unlock)
- Door Lock Sw (Manual door lock switch) (Lock / Neutral / Unlock)
- Driver Door Sw (Driver side door switch) (Open / Close)
- Pass Door Sw (Other than driver side door switch) (Open / Close)
- Brake Fluid Level (Low / Normal)
- Parking Brake Sw (Parking brake switch) (ON / OFF)
- Rear Defogger Sw (Rear end door window defogger switch) (ON / OFF)
- Headlight Sw (Headlight switch) (ON / OFF)
- Tail Light Sw (Lighting switch) (ON / OFF)
- Front Fog Light Sw (Front fog light switch) (ON / OFF)
- Driver Seatbelt Sw (Driver seat belt switch) (Fasten / Unfasten)
- Pass Seatbelt Sw (Passenger seat belt switch) (Fasten / Unfasten)
- Rear end door opener (Rear end door opener switch) (ON / OFF)
- Charge light (ON / OFF)
- Oil pressure switch (ON / OFF)
- A/C Switch (ON / OFF)
- LED Illumi contrast (Illumination control of LED) (%)
- Bulb Illumi contrast (Illumination control of bulb) (%)
- 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/No. 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 U0155 (No. 0155): Lost Communication with Instrument Panel Cluster (IPC) Control Module
- DTC U1144 (No. 1144): Lost Communication with Keyless Start Control Module
- Inspection of BCM and Its Circuits
- Notes
- Voltage Check
- Notes
- BCM connector "G04"
- BCM connector "G05"
- BCM connector "G06"
- 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
- Reference Waveform No. 11
- Reference Waveform No. 12
- Repair Instruction
- Special Tools Axel Equipment
Factory Service Tools
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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.
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