DTC Troubleshooting: B1281, B1282, B1283, B1284
Check for continuity between driver's under-dash fuse/relay box connector R (24P) No. 4 terminal and No. 15, No. 16, and No. 17 terminals individually.
Is there continuity?
YES
-
Repair a short between the wires.■
NO
-
Faulty driver's MICU;
replace the driver's under-dash fuse/relay box.
■