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 prevent airbag and seat belt pretensioner activation.

   NOTE:

   • w/ Navigation System (for HDD):

     After the engine switch is turned off, the display and navigation module display (HDD navigation system) 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 .

NEXT: Go to next step 

1. Disconnect the L59 display and navigation module display connector.
   Fig 1: Identifying L59 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
   L59-21 (CANH) - L59-22 (CANL)	Engine switch off	54 to 69 Ω

NG → REPAIR OR REPLACE DISPLAY AND NAVIGATION MODULE DISPLAY 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 .

2. Disconnect the L59 display and navigation module display connectors.
   Fig 2: Identifying L59 Display And Navigation Module Display Connectors

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
3. Measure the resistance according to the value(s) in the table below.

   Standard resistance

   Tester Connection	Condition	Specified Condition
   L59-10 (GND1) - Body ground	Always	Below 1 Ω

4. Measure the voltage according to the value(s) in the table below.

   Standard voltage

   Tester Connection	Switch Condition	Specified Condition
   L59-1 (+B1) - Body ground	Always	11 to 14 V
   L59-2 (ACC) - Body ground	Engine switch on (ACC)	11 to 14 V
   L59-3 (IG) - Body ground	Engine switch on (IG)	11 to 14 V

   RESULT
   
   

   Result	Proceed to
   OK (w/ Navigation System [for HDD])	A
   OK (w/ Navigation System [for DVD])	B
   OK (w/o Navigation System)	C
   NG	D

B → See step   5 

C → See step   6 

D → REPAIR OR REPLACE HARNESS OR CONNECTOR 

A → See step   4