Visual Mute Signal Circuit between Navigation Receiver Assembly and Multi-display: Procedure

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

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Standard Voltage

   Tester Connection	Condition	Specified Condition
   J126-11 (VMT1) - Body ground	Engine switch on (ACC), screen display changes.	3.5 V or higher → Below 1 V → 3.5 V or higher

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   *a	Component with harness connected (Multi-display Assembly)

NG → See step   2 

OK → See step   4 

1. Disconnect the J126 multi-display assembly connector.
2. Disconnect the J125 multi-media module receiver assembly connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   J126-11 (VMT1) - J125-10 (VMTF)	Always	Below 1 Ω
   J126-11 (VMT1) - Body ground	Always	10 kΩ or higher

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

1. Replace the multi-display assembly and check if the navigation system operates normally. Refer to REMOVAL [08/2012 - ] .

   OK

   The navigation system operates normally.

NG → See step   5 

OK → END