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

DTC B1855

Precautions: Precautions for Body, Cab and Accessories · General safety (00)

DTC Detecting Condition and Trouble Area
DTC detecting condition Trouble area
B1855: Lost Communication With Parking Sensor
Combination meter detected fault in LIN communication with parking sensor system.
•Parking sensor system control module
•Combination meter
•LIN communication circuit
Circuit Diagram
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[A]: Parking sensor system control module connector (View: [a]) 1. Parking sensor system control module 3. LIN driver
[B]: Combination meter connector (View: [a]) 2. CPU 4. Combination meter
DTC Troubleshooting
Step Action Yes No
1
DTC check
1)Clear DTC.
2)Check that ignition is “OFF”.
3)Set ignition “ON”.
4)Check DTC.
Is DTC B1855 still detected?
Go to Step 2.
Check for intermittent trouble. icon 
2
LIN communication circuit check
1)Check that ignition is “OFF”.
2)Disconnect combination meter and parking sensor system control module connectors.
3)Check for proper connection to combination meter and parking sensor system control module terminals.
4)If connections are OK, check circuits between combination meter connector and parking sensor system control module connector for open circuit, short to ground or short to power supply.
Is check result OK?
Replace parking sensor system control module and recheck DTC. icon 
Replace combination meter if DTC B1855 is still detected. icon  
Repair LIN communication circuit.