Display and Navigation Assembly Communication Stop Mode: Procedure

1. Disconnect the cable from the negative (-) battery terminal before measuring the resistances of the main wire and the branch wire.
   WARNING:

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

   NOTE:

   • w/ Navigation System:

     After the engine switch is turned off, the display and navigation module display records various types of memory and settings. As a result, after turning the engine switch off, be sure to wait for the time specified in the following table before disconnecting the cable from the negative (-) battery terminal.

     Waiting Time before Disconnecting Cable from Negative (-) Battery Terminal

     Condition	Waiting Time
     Vehicle enrolled in safety connect system	6 minutes
     Vehicle not enrolled in safety connect system	1 minute

   • When disconnecting the cable, some systems need to be initialized after the cable is reconnected. Refer to INITIALIZATION [06/2012 - ] .

NEXT: Go to next step 

1. Disconnect the H4 display and navigation module display connector.

   Courtesy 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
   H4-21 (CANH) - H4-22 (CANL)	Engine switch off	54 to 69 Ω

   TEXT IN ILLUSTRATION
   
   

   *a	Rear view of wire harness connector (to Display and Navigation Module Display)

NG → REPAIR OR REPLACE DISPLAY AND NAVIGATION MODULE DISPLAY CAN BRANCH WIRE OR CONNECTOR (CANH, CANL) 

OK: Go to next step 

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 [06/2012 - ] .

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

2. Measure the resistance according to the value(s) in the table below.
   STANDARD RESISTANCE
   
   

   Tester Connection	Condition	Specified Condition
   H4-10 (GND1) - Body ground	Always	Below 1 Ω

3. Measure the voltage according to the value(s) in the table below.
   STANDARD VOLTAGE
   
   

   Tester Connection	Condition	Specified Condition
   H4-1 (+B1) - Body ground	Always	11 to 14 V

   TEXT IN ILLUSTRATION
   
   

   *a	Rear view of wire harness connector (to Display and Navigation Module Display)

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK → See step   4