Data Signal Circuit between Radio Receiver and Extension Module [08/2015 - 08/2019]: Procedure

1. Disconnect the s5 and t3 radio and display receiver assembly connectors.
2. Disconnect the s2 and t2 stereo component tuner assembly connectors.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   s5-1 (USV4) - s2-1 (USV4)	Always	Below 1 Ω
   s5-2 (US4-) - s2-2 (US4-)	Always	Below 1 Ω
   s5-3 (US4+) - s2-3 (US4+)	Always	Below 1 Ω
   s5-4 (UGD4) - s2-4 (UGD4)	Always	Below 1 Ω
   s5-5 (USG4) - s2-5 (USG4)	Always	Below 1 Ω
   t3-4 (+B2) - t2-4 (+B2)	Always	Below 1 Ω
   t3-3 (ACC2) - t2-3 (ACC2)	Always	Below 1 Ω
   t3-8 (GND2) - t2-8 (GND2)	Always	Below 1 Ω
   s5-1 (USV4) - Body ground	Always	10 kΩ or higher
   s5-2 (US4-) - Body ground	Always	10 kΩ or higher
   s5-3 (US4+) - Body ground	Always	10 kΩ or higher
   s5-4 (UGD4) - Body ground	Always	10 kΩ or higher
   s5-5 (USG4) - Body ground	Always	10 kΩ or higher
   t3-4 (+B2) - Body ground	Always	10 kΩ or higher
   t3-3 (ACC2) - Body ground	Always	10 kΩ or higher
   t3-8 (GND2) - Body ground	Always	10 kΩ or higher

Result: 

NG 

REPAIR OR REPLACE HARNESS AND CONNECTOR 

Result: 

OK 

See step  2

1. Replace the No. 1 navigation wire (Refer to REMOVAL [08/2015 - 08/2019] ).
2. Check that the malfunction disappears.

   OK

   Malfunction disappears.

Result: 

OK 

END (NO. 1 NAVIGATION WIRE IS DEFECTIVE) 

Result: 

NG 

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE 

(Refer to PROBLEM SYMPTOMS TABLE [08/2015 - 08/2019] )