Diesel Data: Automotive Repair

Keyless Start System




DTC B1120 / B1170 / B1901 / B1902

DTC Detecting Condition and Trouble Area






DTC Confirmation Procedure

1) Push engine switch to change ignition mode to "ON".

DTC Troubleshooting

1. DTC recheck

Clear DTC. DTC Clearance
Push engine switch to change ignition mode to "OFF".
Perform DTC Confirmation Procedure
and then recheck DTC.

Is DTC B1120, B1170, B1901 or B1902 still detected?
YES -
Replace keyless start control module and recheck DTC. Service and Repair
NO -
End.