Body Electrical Control System

DTC B1120 / 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
Disconnect negative (-) cable at battery.
Connect negative (-) cable at battery.
Perform DTC Confirmation Procedure
and then recheck DTC.
Is DTC B1120, B1901 or B1902 still detected?
YES
Substitute a known-good BCM and recheck DTC.
NO
End.