Nissan Sentra B18 (2020-2025) Service Manual: Power Supply and Ground Circuit
Combination Meter
Diagnosis Procedure
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CHECK FUSES
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Check that the following fuses are not blown:
Unit
Power source
Fuse No.
Capacity
Combination meter
Battery
42
10 A
Ignition switch ON or START
47
5 A
Is the fuse blown?
YES >>Replace the blown fuse after repairing the affected circuit.
NO >>GO TO 2.
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POWER SUPPLY CIRCUIT CHECK
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-
Disconnect combination meter connector.
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Check voltage between combination meter harness connector and ground.
(+)
(–)
Ignition switch position
Combination meter
Connector
Terminal
OFF
ON
START
M24
5
Ground
Battery voltage
Battery voltage
Battery voltage
6
0 V
Battery voltage
Battery voltage
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Is the inspection result normal?
YES >>GO TO 3.
NO >>Repair or replace harness or connector.
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GROUND CIRCUIT CHECK
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-
Ignition switch OFF.
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Check continuity between combination meter harness connector and ground.
Combination meter
—
Continuity
Connector
Terminal
M24
7
Ground
Yes
-
Is the inspection result normal?
YES >>Inspection End.
NO >>Repair or replace harness or connectors.
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Illumination Control Switch Signal Circuit
Diagnosis Procedure
Diagnosis Procedure
CHECK COMBINATION METER INPUT
SIGNAL
Ignition switch ON.
...
Other materials:
Lumbar Support System
System Description
System Description
DESCRIPTION
Lumbar support can operate regardless of the ignition
switch status, because power supply is always supplied to the lumber
support switch.
While operating the lumbar support switch, the
lumba ...
Fuel pump
Component Function Check
1.CHECK FUEL PUMP FUNCTION
Turn ignition switch ON.
Pinch fuel feed hose with
two fingers.
Fuel pressure pulsation should be felt on the fuel feed
hose for 1 second after ignition switch is turned ON.
Is the inspection result normal?
YES >> INSPECT ...
Basic inspection
Inspection and adjustment
Additional service when replacing control unit (bcm)
ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT (BCM) : Description
Before replacement
When replacing bcm, save or print current vehicle specification with consult
configuration before replacement.
Note:
If “B ...
