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

Nissan Sentra B18 (2020-2025) Service Manual / Driver Information & Multimedia / Audio, Visual & Navigation System :: Display Audio with 7" Color Display / Dtc/circuit Diagnosis / Power Supply and Ground Circuit

Diagnosis Procedure

Diagnosis Procedure

CHECK FUSE

Check that the following fuse is not blown:

Terminal No.	Signal name	Fuse No.	Capacity
19	Battery power supply	40	20 A

Is the fuse blown?

YES >>

Replace the blown fuse after repairing the affected circuit.

NO >>

GO TO 2.

CHECK POWER SUPPLY CIRCUIT

Ignition switch OFF.
Disconnect AV control unit connector.

Check voltage between AV control unit connector and ground.

AV control unit	(−)	Condition	Voltage (Approx.)
M92	19	Ground	Ignition switch: OFF	Battery voltage

AV control unit

(−)

Condition

Voltage

(Approx.)

(+)

Connector

Terminal

M92

Ground

Ignition switch: OFF

Battery voltage

Is the inspection result normal?

YES >>

GO TO 3.

NO >>

Repair or replace harness or connectors.

CHECK GROUND CIRCUIT

Disconnect AV control unit connector.

Check continuity between AV control unit connector and ground.

AV control unit		—	Continuity
Connector	Terminal	—	Continuity
M92	20	Ground	Yes
M93	29	Ground	Yes

Is the inspection result normal?

YES>>

Inspection End.

NO>>

Repair or replace harness or connectors.

Front Door Speaker

Diagnosis Procedure Diagnosis Procedure CONNECTOR CHECK Check the AV control unit and speaker connectors for the following: ...

Other materials:

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