Visual Mute Signal Circuit between Navigation Receiver Assembly and Multi-display (07/2015 - 08/2016): 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
   H92-11 (VMTI) - Body ground	Engine switch on (ACC) Screen display changes	3.5 V or higher → Below 1 V → 3.5 V or higher

   TEXT IN ILLUSTRATION
   
   

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

Result:  OK

OK 

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE 

(Refer to PROBLEM SYMPTOMS TABLE (07/2015 - 08/2016) )

Result:  NG

NG 

See step  2

1. Disconnect the H97 radio receiver assembly connector.
2. Disconnect the H92 multi-display assembly connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   H97-10 (VMTF) - H92 -11 (VMTI)	Always	Below 1 Ω
   H97-10 (VMTF) - Body ground	Always	10 kΩ or higher

Result:  NG

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result:  OK

OK 

See step  3

1. Replace the multi-display assembly with a new or known good one (Refer to REMOVAL (07/2015 -) ).
2. Check that the screen display is normal.

   OK

   Screen display is normal.

Result:  OK

OK 

END 

Result:  NG

NG 

REPLACE RADIO RECEIVER ASSEMBLY 

(Refer to REMOVAL (07/2015 -) )