Inspection Procedure

1. Remove the multiplex network master switch with connector still connected.
2. Measure the voltage of the wire harness side connector.

   Standard voltage 

   VOLTAGE SPECIFICATION
   
   

   Switch Condition	Tester Connection	Specified Condition
   H6-15 (PCT) - Body ground	Window lock switch is OFF → ON	0 V → 2 V or less
   H6-13 (TX) - Body ground	Ignition switch ON	10 to 14 V

   Fig 1: Identifying Multiplex Network Master Switch Assembly Connectors Terminals

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPLACE MULTIPLEX NETWORK MASTER SWITCH ASSEMBLY 

OK: Go to next step 

1. Disconnect the H6 and G6 connectors.
2. Measure the resistance of the wire harness side connector.

   Standard resistance 

   RESISTANCE SPECIFICATION
   
   

   Switch Condition	Tester Connection	Specified Condition
   H6-15 (PCT) - G6-11 (PCT)	Always	Below 1 Ω
   H6-15 (PCT) - Body ground	Always	10 kΩ or higher
   H6-13 (TX) - G6-2 (RX)	Always	Below 1 Ω
   H6-13 (TX) - Body ground	Always	10 kΩ or higher

NG: REPAIR OR REPLACE HARNESS AND CONNECTOR 

Fig 2: Identifying H6 And G6 Connectors Terminals

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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