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.
2009 Suzuki SX4 LE, AutomaticFACTORY OEM SERVICE PROCEDURE
Body Electrical Control System DTCS
BODY ELECTRICAL CONTROL SYSTEM DIAGNOSTIC TROUBLE CODE (DTC) LIST
| DTC | Detected item | Detecting Condition |
|---|---|---|
| B1170 | EEPROM access error | Light up after blinks for 75 seconds |
| U0073 | Control module communication bus off | Transmitting and receiving error of BCM for specified time continuously |
| U0100 | Lost communication with ECM | Receiving error of BCM from ECM for specified time continuously |
| U0101 | Lost communication with TCM | Receiving error of BCM from TCM for specified time continuously |
| U0155 | Lost communication with instrument panel cluster (IPC) control module | Receiving error of BCM from combination meter for specified time continuously |
| U1144 | Lost communication with keyless start control module | Receiving error of BCM from keyless start control module for specified time continuously |
Factory Service Tools
Use the Manual With the Right Hardware
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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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