Nissan Sentra B18 (2020-2025) Service Manual: Power Supply and Ground Circuit. Diagnosis Procedure
Diagnosis Procedure
Diagnosis Procedure
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CHECK FUSE
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Check that the following fuse is not blown:
Terminal No.
Signal name
Fuse No.
Capacity
12
Ignition power supply
49
10 A
Is the fuse blown?
YES>>Replace the blown fuse after repairing the affected circuit.
NO>>GO TO 2.
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-
CHECK POWER SUPPLY CIRCUIT
-
-
Ignition switch OFF.
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Disconnect sonar control unit connector.
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Check voltage between sonar control unit connector and ground.
(+)
(–)
Condition
Voltage
(Approx.)
Sonar control unit
Connector
Terminal
B87
12
Ground
Ignition switch: ON
Battery voltage
-
Is the inspection result normal?
YES>>GO TO 3.
NO>>Repair or replace harness or connectors.
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CHECK GROUND CIRCUIT
-
-
Ignition switch OFF.
-
Check continuity between sonar control unit connector and ground.
Sonar control unit
—
Continuity
Connector
Terminal
B87
15
Ground
Yes
-
Is the inspection result normal?
YES>>Inspection End.
NO>>Repair or replace harness or connectors.
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DTC Description
DTC DETECTION LOGIC
DTC No.
CONSULT screen terms
(Trouble diagnosis content)
DTC detection condition
...
C1f6b-54 Camera Unit
Dtc Description
DTC Description
DTC DETECTION LOGIC
DTC
CONSULT screen terms
(Trouble diagnosis
content)
DTC detection
conditi ...
Illumination Control Switch Signal Circuit
Diagnosis Procedure
Diagnosis Procedure
CHECK COMBINATION METER INPUT
SIGNAL
Ignition switch ON.
Check voltage between the following terminals of
the illumination co ...