B1214

DTC B1214 DOOR SYSTEM COMMUNICATION BUS MALFUNCTION (+B SHORT)

CIRCUIT DESCRIPTION

DTC Detecting Condition:

B1214 and B1215 will be output when +B and body ground is short-circuited on the communication bus.

Detecting this condition will make all the BEAN communication unable and output some DTC.

HINT: Security ECU has a single communication line. Therefore, if the line becomes short (bus-down), the BEAN communication will not be impossible and DTCs will not be output multiply, either.

Wiring Diagram:

Step 1:

Step 2:

Step 3:

Step 4:

INSPECTION PROCEDURE