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

DTC B1180 / B1181 / B1182

Precautions: Precautions for Diagnosing Trouble · Precautions for Replacing Remote Controller · Precautions for Remote Controller Disposal · Precautions for Replacing Keyless Start Control Module · Precautions for Control Systems · General safety (00)

DTC Detecting Condition and Trouble Area
DTC detecting condition Trouble area
B1180: Driver Side Door Request Switch Malfunction
Driver door request switch signal voltage is lower than specified value for specified time.
•Request switch circuit / connector
•Request switch
•Keyless start control module
B1181: Passenger Side Door Request Switch Malfunction
Passenger door request switch signal voltage is lower than specified value for specified time.
B1182: Rear End Door / Trunk Lid Request Switch Malfunction
Rear end door request switch signal voltage is lower than specified value for specified time.
Circuit Diagram
img
[A]: Keyless start control module connector (View: [a]) A3: Rear end door request switch signal circuit 3. Rear end door request switch
A1: Driver door request switch signal circuit 1. Driver door request switch 4. Keyless start control module
A2: Passenger door request switch signal circuit 2. Passenger door request switch    
DTC Confirmation Procedure
1)Set ignition “ON”.
2)Push request switch related to DTC.
3)Release request switch.
4)Keep ignition “ON” for 10 minutes or more.
DTC Troubleshooting
Step Action Yes No
1
Request switch signal circuit check
1)Check that ignition is “OFF”.
2)Disconnect request switch and “L21” connectors.
3)Check for proper terminal connection to request switch and “L21” connectors.
4)If connections are OK, check that resistance between each of “A1”, “A2” and “A3” circuits and ground is infinity.
Is check result OK?
Go to Step 2.
Repair or replace defective wire harness.
2
Request switch check
1)Check request switch. icon 
Is check result OK?
Replace keyless start control module and recheck DTC. icon 
Replace request switch.
•Driver door request switch / passenger door request switch: icon 
•Rear end door request switch: icon