Sound cannot be Heard Sound Quality is Poor only when Replaying USB Storage Device or "iPod" [12/2022 - ]: Procedure

1. Disconnect the K82 radio and display receiver assembly connector.
2. Disconnect the K134 No. 1 stereo jack adapter assembly connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   K82-2 (US1-) - K134-4 (D-)	Always	Below 1 Ω
   K82-3 (US1+) - K134-1 (D+)	Always	Below 1 Ω
   K82-5 (USG1) - K134-5 (UJSS)	Always	Below 1 Ω
   K82-2 (US1-) or K134-4 (D-) - Body ground	Always	10 kΩ or higher
   K82-3 (US1+) or K134-1 (D+) - Body ground	Always	10 kΩ or higher
   K82-5 (USG1) or K134-5 (UJSS) - Body ground	Always	10 kΩ or higher

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

OK 

See step  2

1. Replace the No. 1 stereo jack adapter assembly with a new or known good one.

   Refer to REMOVAL [12/2022 - ]

2. Check if the problem symptom recurs.

   Result

   Result	Proceed to
   Malfunction disappears	A
   Malfunction occurs	B

Result: 

A 

END (NO. 1 STEREO JACK ADAPTER ASSEMBLY MALFUNCTION) 

Result: 

B 

REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY. Refer to  REMOVAL [12/2022 - ]