B1291

DTC B1291 LIGHT SYSTEM COMMUNICATION BUS MALFUNCTION (+B SHORT)

DTC Detecting Condition Part 1:

DTC Detecting Condition Part 2:

B1214, B1215,B1214, B1215, B1266, B1267, B1291 and B1292 will be output when +B and body ground is short-circuited on the door, I/P and lighting system communication bus. Detecting this condition will make all the BEAN communication unable and output some diagnosis codes.

Wiring Diagram - I/P Bus:

Wiring Diagram - Lighting Bus:

Wiring Diagram - Door Bus:

Step 1:

Step 2:

Step 3:

Step 4:

Step 5:

Step 6:

INSPECTION PROCEDURE