B1292

DTC B1291 LIGHT SYSTEM COMMUNICATION BUS MALFUNCTION (+B SHORT)
DTC B1292 LIGHT SYSTEM COMMUNICATION BUS MALFUNCTION (GND SHORT)

CIRCUIT DESCRIPTION

DTC Detection Condition:

B1291 and B1292 are detected when +B and body ground is short circuited on the light system (column bus) communication bus. Detecting this condition will disable the light system communication bus (BEAN) and output some diagnosis codes.

Wiring Diagram:

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INSPECTION PROCEDURE