Nissan Sentra B18 (2020-2025) Service Manual: Power Supply and Ground Circuit. Diagnosis Procedure
Diagnosis Procedure
Diagnosis Procedure
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CHECK FUSES
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Check that the following fuses are not blown:
Terminal No.
Signal name
Fuse No.
Capacity
7
Battery power supply
41
5 A
133
32
10 A
135
Battery power supply (door lock 1)
28
10 A
136
Battery power supply (turn signal lamp)
30
15 A
138
Battery power supply (rear wiper)
21
10 A
139
Battery power supply (stop lamp)
34
10 A
144
Battery power supply (door lock 2)
29
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
-
-
Disconnect BCM connector.
-
Check voltage between BCM harness connector and ground.
+
–
Voltage
(Approx.)
BCM
Connector
Terminal
M84
7
Ground
Battery voltage
M20
133
135
136
138
139
144
-
Is the inspection result normal?
YES>>GO TO 3.
NO>>Repair harness or connector.
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-
CHECK GROUND CIRCUIT
-
Check continuity between BCM harness connector and ground.
BCM
Ground
Continuity
Connector
Terminal
M20
137
—
Yes
129
Is the inspection result normal?
YES>>Inspection End.
NO>>Repair harness or connector.
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Other materials:
Laser/radar (distance Sensor)
C2580-44 Control Unit
Dtc Description
DTC Description
DTC DETECTION LOGIC
DTC
CONSULT screen terms
(Trouble diagnosis
content)
DTC dete ...
C1608-54 Control Unit
Dtc Description
DTC Description
DTC DETECTION LOGIC
DTC No.
CONSULT screen terms
(Trouble diagnosis content)
DTC detection condition
...
Clutch Master Cylinder (clutch Switch)
Component Function Check
Component Function Check
CHECK FUNCTION
CONSULT
Ignition switch ON.
Select “INTELLIGENT KEY” mode of
“BCM”.
...