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

DTC B1670

Precautions: Precautions for Diagnosing Trouble · Precautions for Control Systems · General safety (00)

DTC Detecting Condition and Trouble Area
DTC detecting condition Trouble area
B1670: Rain / Light Sensor Malfunction
BCM detected malfunction related to rain / light sensor.
•Rain / light sensor
•Lighting switch
•Wiper and washer switch
•BCM
DTC Confirmation Procedure
1)Set ignition “ON”.
DTC Troubleshooting
Step Action Yes No
1
Parameter check
1)Connect SUZUKI scan tool to DLC when ignition is “OFF”.
2)Set ignition “ON” and select “Data List” mode.
3)Check the displayed of SUZUKI scan tool related to “wiper switch”, “lighting switch” and “rain / light sensor”. icon 
Are data list parameters related to “wiper switch”, “lighting switch” and “rain / light sensor” normal?
Replace rain / light sensor and recheck DTC. If DTC B1670 is still detected, replace BCM and recheck DTC.
•Rain / light sensor: icon 
•BCM: icon 
Diagnose the defective parameter.
•Lighting system: icon 
•Wiper and washer system: icon