Mute Signal Circuit Between Navigation Receiver Assembly And Television Display Assembly: Procedure

1. Measure the voltage according to the value(s) in the table below.
   Fig 1: Measuring Voltage Of Television Display Assembly

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Standard Voltage

   Tester Connection	Condition	Specified Condition
   U1-11 (MUTE) - Body ground	Ignition switch ACC, RSE system playing → Changing mode	Above 3.5 V → Below 1 V

   TEXT IN ILLUSTRATION
   
   

   *a	Component with harness connected (Television Display Assembly)

NG → See step   2 

OK → See step   4 

1. Disconnect the D59 navigation receiver assembly connector.
2. Disconnect the U1 television display assembly connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   D59-6 (MUTE) - U1-11 (MUTE)	Always	Below 1 Ω
   D59-6 (MUTE) - Body ground	Always	10 kΩ or higher

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

1. Reconnect the navigation receiver assembly connector.
2. Measure the voltage according to the value(s) in the table below.
   Fig 2: Measuring Voltage Of Navigation Receiver Assembly (Output Signal)

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Standard Voltage

   Tester Connection	Condition	Specified Condition
   U1-11 (MUTE) - Body ground	Ignition switch ACC, RSE system playing	Above 3.5 V

   TEXT IN ILLUSTRATION
   
   

   *a	Front view of wire harness connector (to Television Display Assembly)

NG → See step   5 

OK → See step   6