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Inspection Procedure

  1. CHECK WIRE HARNESS (MULTIPLEX NETWORK MASTER SWITCH - BATTERY AND BODY GROUND) 
    1. Disconnect the P5 connector.
      Fig 1: Identifying P5 Connector Terminals
      G05205075Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the voltage and resistance according to the value(s) in the table below.

      Standard voltage 

      VOLTAGE SPECIFICATION

      Tester Connection Condition Specified Condition
      P5-9 (CPUB) - Body ground Always 10 to 14 V
      P5-10 (BDR) - Body ground Always 10 to 14 V
      P5-20 (SIG) - Body ground Ignition switch ON 10 to 14 V

      Standard resistance 

      RESISTANCE SPECIFICATION

      Tester Connection Condition Specified Condition
      P5-2 (GND) - Body ground Always Below 1 Ω

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

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

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