Inspection Procedure

1. Disconnect the P21 connector.
2. Measure the voltage and resistance according to the value(s) in the table below.

   Standard voltage 

   MULTIPLEX NETWORK SWITCH - BATTERY AND BODY GROUND - VOLTAGE
   
   

   Tester Connection	Condition	Specified Condition
   P21-12 (BDR) - Body ground	Always	10 to 14 V

   Standard resistance 

   MULTIPLEX NETWORK SWITCH - BATTERY AND BODY GROUND - RESISTANCE
   
   

   Tester Connection	Condition	Specified Condition
   P21-7 (GND) - Body ground	Always	Below 1 Ω

   Fig 1: Checking Wire Harness (Multiplex Network Switch - Battery And Body Ground)

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG : REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK : PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE