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Inspection Procedure

  1. CHECK WIRE HARNESS (MULTIPLEX NETWORK MASTER SWITCH - BATTERY AND BODY GROUND) 
    1. Disconnect the P22 connector.
    2. Measure the voltage and resistance according to the value (s) in the table below.

      Standard voltage 

      TESTER CONNECTION SPECIFIED CONDITION

      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 

      TESTER CONNECTION SPECIFIED CONDITION

      Tester Connection Condition Specified Condition
      P22-2 (GND) - Body ground Always Below 1 Ω
    Fig 1: Identifying Multiplex Network Master Switch Connector Terminals
    G05281072Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: PROCEED TO NEXT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE