Nissan Sentra B18 (2020-2025) Service Manual: Power Supply and Ground Circuit

Diagnosis Procedure

1. CHECK FUSE

   1. Check that the following fuse is not blown:

      Terminal No.	Signal name	Fuse No.	Capacity
      40	Ignition signal	49	10 A

   Is the fuse blown?

   YES>>

   Replace the blown fuse after repairing the affected circuit.

   NO>>

   GO TO 2.

2. CHECK POWER SUPPLY CIRCUIT

   1. 1. Ignition switch OFF.

      2. Disconnect around view monitor control unit connector.

      3. Ignition switch ON.

      4. Check voltage between around view monitor control unit connector and ground.

         Around view monitor control unit		—	Condition	Voltage (Approx.)
         Connector	Terminal
         B72	40	Ground	Ignition switch: ON	Battery voltage

   Is the inspection result normal?

   YES >>

   GO TO 3.

   NO >>

   Repair or replace harness or connectors.

3. CHECK GROUND CIRCUIT

   1. 1. Ignition switch OFF.

      2. Check continuity between around view monitor control unit connector and ground.

         Around view monitor control unit		—	Continuity
         Connector	Terminal
         B72	39	Ground	Yes

   Is the inspection result normal?

   YES >>

   Inspection End.

   NO >>

   Repair or replace harness or connectors.

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