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Navigation Receiver Assembly Communication Stop Mode [08/2014 - ]: Procedure

  1. DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL 
    1. Disconnect the cable from the negative (-) battery terminal before measuring the resistances of the main wire and branch wire.
      WARNING:

      Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system.

      NOTE:

      When disconnecting the cable, some systems need to be initialized after the cable is reconnected. Refer to INITIALIZATION [08/2014 - ] .

    NEXT: Go to next step 

  2. CHECK FOR OPEN IN CAN BUS WIRE (NAVIGATION RECEIVER ASSEMBLY BRANCH WIRE) 
    1. Disconnect the G37 navigation receiver assembly connector.
      GTY429332Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Switch Condition Specified Condition
      G37-9 (CANH) - G37-10 (CANL) Ignition switch off 54 to 69 Ω
      TEXT IN ILLUSTRATION

      *a Front view of wire harness connector
      (to Navigation Receiver Assembly)

    NG → REPAIR OR REPLACE NAVIGATION RECEIVER ASSEMBLY BRANCH WIRE OR CONNECTOR (CANH, CANL) 

    OK: Go to next step 

  3. CHECK HARNESS AND CONNECTOR (NAVIGATION RECEIVER ASSEMBLY - BATTERY AND BODY GROUND) 
    1. Connect the cable to the negative (-) battery terminal.
      NOTE:

      When disconnecting the cable, some systems need to be initialized after the cable is reconnected. Refer to INITIALIZATION [08/2014 - ] .

      GTY425657Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Disconnect the G6 and G37 navigation receiver assembly connectors.
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      G6-7 (GND) - Body ground Always Below 1 Ω
    4. Measure the voltage according to the value(s) in the table below.

      Standard Voltage

      Tester Connection Condition Specified Condition
      G37-1 (IG) - Body ground Ignition switch ON 11 to 14 V
      G6-4 (B) - Body ground Always 11 to 14 V
      TEXT IN ILLUSTRATION

      *a Front view of wire harness connector
      (to Navigation Receiver Assembly)

    NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK → See step   4 

  4. REPLACE NAVIGATION RECEIVER ASSEMBLY. Refer to  REMOVAL [08/2014 - ]