Inspection Procedure

1. Disconnect the P22 connector.
2. Measure the voltage and resistance according to the value(s) in the table below.

   Standard voltage 

   MULTIPLEX NETWORK MASTER SWITCH - BATTERY AND BODY GROUND - VOLTAGE
   
   

   Tester Connection	Condition	Specified Condition
   P22-9 (CPUB) - Body ground	Always	10 to 14 V
   P22-10 (BDR) - Body ground	Always	10 to 14 V
   P22-20 (SIG) - Body ground	Ignition switch ON	10 to 14 V

   Standard resistance 

   MULTIPLEX NETWORK MASTER SWITCH - BATTERY AND BODY GROUND - RESISTANCE
   
   

   Tester Connection	Condition	Specified Condition
   P22-2 (GND) - Body ground	Always	Below 1 Ω

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

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG : REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK : PROCEED TO NEXT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE