DTC B1275: Accessory Bus Buffer Communication Stop: Procedure

1. Disconnect the D16, D7 and IR connectors.
2. Measure the resistance according to the value(s) in the table below.

   Resistance

   Tester Connection	Condition	Specified Condition
   D16-1 (MPX+) - IR-9	Always	Below 1 Ω
   D16-2 (GBSI) - D7-14 (GBS)		Below 1 Ω

   Result

   Result	Proceed to
   Both are OK	A
   One is OK	B
   Both are NG	C

B → REPLACE OPTION CONNECTOR AND REPAIR OR REPLACE HARNESS OR CONNECTOR 

C → REPAIR OR REPLACE HARNESS OR CONNECTOR 

A → REPLACE OPTION CONNECTOR