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
Keyless Start System DTCS
KEYLESS START SYSTEM DIAGNOSTIC TROUBLE CODE (DTC) LIST
| DTC | Detected parts item | Detecting condition |
|---|---|---|
| DTC NO. 11: COMMUNICATION ERROR WITH STEERING LOCK UNIT | Communication Error with Steering Lock Unit | No communication is available between keyless start control module and steering lock unit |
| 12 | - | Normal (No malfunction DTC is detected) |
| DTC NO. 13 / NO. 14: RELEASE SIGNAL ERROR FROM STEERING LOCK UNIT / STEERING LOCK UNIT MALFUNCTION | Release Signal Error from Steering Lock Unit | Although lock release signal is output to steering lock unit, it is not inputted from steering lock unit |
| DTC NO. 13 / NO. 14: RELEASE SIGNAL ERROR FROM STEERING LOCK UNIT / STEERING LOCK UNIT MALFUNCTION | Steering Lock Unit Malfunction | Steering lock unit cannot be unlocked due to its temperature rise |
| DTC NO. 21 / NO. 22: INTERNAL ERROR OF KEYLESS START CONTROL MODULE (EEPROM READING ERROR) / (EEPROM WRITING ERROR) | Internal Error in Keyless Start Control Module (EEPROM Reading Error) | Data cannot be read from memory in keyless start control module |
| DTC NO. 21 / NO. 22: INTERNAL ERROR OF KEYLESS START CONTROL MODULE (EEPROM READING ERROR) / (EEPROM WRITING ERROR) | Internal Error in Keyless Start Control Module (EEPROM Writing Error) | Data cannot be written into memory in keyless start control module |
| DTC NO. 31: LOST COMMUNICATION WITH BCM | Lost Communication with BCM | Keyless start control module cannot receive data sent by CAN from BCM |
| DTC NO. 33: CONTROL MODULE COMMUNICATION BUS OFF | Control Module Communication Bus Off | No communication is available with all control modules connected by CAN |
| DTC NO. 51 / NO. 52 / NO. 53: DRIVER SIDE / PASSENGER SIDE / REAR END DOOR REQUEST SWITCH FAILURE | Driver Side Door Request Switch Malfunction | Input signal from driver side door request switch remains ON, unchanged |
| DTC NO. 51 / NO. 52 / NO. 53: DRIVER SIDE / PASSENGER SIDE / REAR END DOOR REQUEST SWITCH FAILURE | Passenger Side Door Request Switch Malfunction | Input signal from passenger side door request switch remains ON, unchanged |
| DTC NO. 51 / NO. 52 / NO. 53: DRIVER SIDE / PASSENGER SIDE / REAR END DOOR REQUEST SWITCH FAILURE | Rear End Door Request Switch Malfunction | Input signal from rear end door request switch remains ON, unchanged |
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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