Back-Up Communication Bus Malfunction (Between Combination Switch ECU and Driver Side J/B ECU)

DTC B1268 BACK-UP COMMUNICATION BUS MALFUNCTION (BETWEEN COMBINATION SWITCH ECU AND DRIVER SIDE J/B ECU)

CIRCUIT DESCRIPTION

DTC Detecting Condition:

This DTC is output when (+)B or GND short occurs between Driver side J/B ECU and combination switch ECU back-up communication bus.

Wiring Diagram:

Step 1:

INSPECTION PROCEDURE