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

1. Disconnect the f5 and e2 radio and display receiver assembly connectors.
2. Disconnect the f2 and e3 stereo component tuner assembly connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   f5-1 (USV4) - f2-1 (USV4)	Always	Below 1 Ω
   f5-2 (US4-) - f2-2 (US4-)	Always	Below 1 Ω
   f5-3 (US4+) - f2-3 (US4+)	Always	Below 1 Ω
   f5-4 (UGD4) - f2-4 (UGD4)	Always	Below 1 Ω
   f5-5 (USG4) - f2-5 (USG4)	Always	Below 1 Ω
   e2-4 (+B2) - e3-4 (+B)	Always	Below 1 Ω
   e2-3 (ACC2) - e3-3 (ACC)	Always	Below 1 Ω
   e2-8 (GND2) - e3-8 (GND2)	Always	Below 1 Ω
   f5-1 (USV4) - Body ground	Always	10 kΩ or higher
   f5-2 (US4-) - Body ground	Always	10 kΩ or higher
   f5-3 (US4+) - Body ground	Always	10 kΩ or higher
   f5-4 (UGD4) - Body ground	Always	10 kΩ or higher
   f5-5 (USG4) - Body ground	Always	10 kΩ or higher
   e2-4 (+B2) - Body ground	Always	10 kΩ or higher
   e2-3 (ACC2) - Body ground	Always	10 kΩ or higher
   e2-8 (GND2) - Body ground	Always	10 kΩ or higher

Result: 

NG 

REPAIR OR REPLACE NO. 1 NAVIGATION WIRE 

(Refer to PROBLEM SYMPTOMS TABLE [08/2015 - 08/2017] , or refer to PROBLEM SYMPTOMS TABLE [08/2017 - 08/2019] )

Result: 

OK 

See step  2

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

   OK

   Malfunction disappears.

Result: 

OK 

END (NO. 1 NAVIGATION WIRE [LVDS COMMUNICATION LINE] IS DEFECTIVE) 

Result: 

NG 

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE 

(Refer to PROBLEM SYMPTOMS TABLE [08/2015 - 08/2017] , or refer to PROBLEM SYMPTOMS TABLE [08/2017 - 08/2019] )