Suzuki Vitara (LY) 2016-2017 · Service Manual Diagnostic Information and Procedures

DTC B1120 / B1170

Precautions: Precautions for Diagnosing Trouble · Precautions for Replacing Ignition Key (Ignition Switch Model) · Precautions for Transmitter Disposal (Ignition Switch Model) · Precautions for Replacing Keyless Entry Control Module (Ignition Switch Model) · Precautions for Body, Cab and Accessories · General safety (00)

DTC Detecting Condition and Trouble Area
DTC detecting condition Trouble area
B1120: Keyless Start Control Module Internal Defect
Keyless entry control module internal failure.
Keyless entry control module
B1170: EEPROM Access Error
Keyless entry control module internal failure. (EEPROM error)
DTC Confirmation Procedure
1)Set ignition “ON”.
DTC Troubleshooting
Step Action Yes No
1
DTC recheck
1)Clear DTC. icon 
2)Set ignition “OFF”.
3)Perform DTC Confirmation Procedure and then recheck DTC.
Is DTC B1120 or B1170 still detected?
Replace keyless entry control module and recheck DTC. icon 
End.