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:
Signal name
Fuse No.
Capacity
Ignition power supply
49
10 A
Is the fuse blown?
YES >>Replace the blown fuse after repairing the affected circuit.
NO >>GO TO 2.
-
-
CHECK FUSIBLE LINK
-
Check that the following fusible link is not blown:
Signal name
Fusible link No.
Capacity
Battery
H
80 A
Is the fusible link blown?
YES >>Replace the blown fusible link after repairing the affected circuit.
NO >>GO TO 3.
-
-
POWER SUPPLY CIRCUIT CHECK
-
-
Disconnect EPS control unit connector.
-
Check voltage between EPS control unit harness connector and ground.
(+)
(—)
Ignition switch position
EPS control unit
Connector
Terminal
OFF
ON
START
E74
7
Ground
Battery voltage
Battery voltage
Battery voltage
E73
4
0 V
Battery voltage
Battery voltage
-
Is the inspection result normal?
YES >>GO TO 4.
NO >>Repair or replace harness or connector.
-
-
GROUND CIRCUIT CHECK
-
-
Ignition switch OFF.
-
Check continuity between EPS control unit harness connector and ground.
EPS control unit
—
Continuity
Connector
Terminal
E74
8
Ground
Yes
-
Is the inspection result normal?
YES >>Inspection End.
NO >>Repair or replace harness or connectors.
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Other materials:
Periodic Maintenance. Headlamp
Headlamp
Aiming Adjustment
Aiming Adjustment
PREPARATION BEFORE ADJUSTING
Before performing aiming adjustment, check the
following:
Ensure all tires are inflated to correct
pressure.
Place Nissan Sentra vehicle and screen on level surface.
...
Sunload Sensor
Diagnosis Procedure
Diagnosis Procedure
CHECK SUNLOAD SENSOR SIGNAL
Ignition switch ON.
Check voltage between A/C auto amp. harness connector.
...
B20ce-15 Hl (hi) Lh Pwr Sply Circ
Dtc Description
DTC Description
DTC DETECTION LOGIC
DTC No.
CONSULT screen items
(Trouble diagnosis content)
DTC detection condition
...