Nissan Sentra B18 (2020-2025) Service Manual: Front Auxiliary Input Jacks

Diagnosis Procedure

AUX JACK

1. CHECK AUX JACK HARNESS CONTINUITY

   1. 1. Ignition switch OFF.

      2. Disconnect AV control unit connector and front auxiliary input jacks connector.

      3. Check continuity between AV control unit connector and front auxiliary input jacks connector.

         AV control unit		Front auxiliary input jacks		Continuity
         Connector	Terminal	Connector	Terminal
         M104	27	M105	2	Yes
         	28		3
         	47		1

      4. Check continuity between AV control unit connector and ground.

         AV control unit		—	Continuity
         Connector	Terminal
         M45	27	Ground	No
         	47

   Is the inspection result normal?

   YES >>

   Replace the front auxiliary input jacks. Refer to Removal and Installation.

   NO >>

   Repair or replace harness or connectors.

USB INTERFACE

1. CHECK USB 1 INTERFACE HARNESS CONTINUITY

   1. 1. Ignition switch OFF.

      2. Disconnect front auxiliary input jacks connector and front auxiliary input jacks control unit connector.

      3. Check continuity between front auxiliary input jacks connector and front auxiliary input jacks control unit connector.

         Front auxiliary input jacks		Front auxiliary input jacks control unit		Continuity
         Connector	Terminal	Connector	Terminal
         M106	7	M118	11	Yes
         	9		13
         	10		14
         	11		15
         	12		16

      4. Check continuity between front auxiliary input jacks connector and ground.

         Front auxiliary input jacks		—	Continuity
         Connector	Terminal
         M106	9	Ground	No
         	11

   Is the inspection result normal?

   YES >>

   GO TO 2.

   NO >>

   Repair or replace harness or connectors.

2. CHECK USB 2 INTERFACE HARNESS CONTINUITY

   1. 1. Disconnect front auxiliary input jacks connector and front auxiliary input jacks control unit connector.

      2. Check continuity between front auxiliary input jacks connector and front auxiliary input jacks control unit connector.

         Front auxiliary input jacks		Front auxiliary input jacks control unit		Continuity
         Connector	Terminal	Connector	Terminal
         M113	13	M119	17	Yes
         	15		19
         	16		20
         	17		21
         	18		22

      3. Check continuity between front auxiliary input jacks connector M113 and ground.

         Front auxiliary input jacks		—	Continuity
         Connector	Terminal
         M113	15	Ground	No
         	17

   Is the inspection result normal?

   YES >>

   GO TO 3.

   NO >>

   Repair or replace harness or connectors.

3. CHECK USB INTERFACE HARNESS CONTINUITY

   1. 1. Ignition switch OFF.

      2. Disconnect AV control unit connector and front auxiliary input jacks control unit connector.

      3. Check continuity between AV control unit connector and front auxiliary input jacks control unit connector.

         AV control unit		Front auxiliary input jacks control unit		Continuity
         Connector	Terminal	Connector	Terminal
         M114	61	M117	5	Yes
         	63		7
         	64		8
         	65		9
         	66		10

      4. Check continuity between AV control unit connector and ground.

         AV control unit		—	Continuity
         Connector	Terminal
         M114	63	Ground	No
         	65

   Is the inspection result normal?

   YES >>

   Replace the front auxiliary input jacks. Refer to Removal and Installation.

   NO >>

   Repair or replace harness or connectors.

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