Nissan Sentra B18 (2020-2025) Service Manual: 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.
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CHECK FUSIBLE LINK
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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.
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POWER SUPPLY CIRCUIT CHECK
-
-
Disconnect EPS control unit connector.
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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.
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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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Eps Warning Lamp
...
Other materials:
Confirmation Procedure
Confirmation Procedure
PERFORM DTC CONFIRMATION
PROCEDURE
CONSULT
Erase DTC.
Ignition switch OFF.
Ignition switch ON.
...
Removal and Installation
Removal and Installation
REMOVAL
CAUTION:
Before servicing, turn the ignition switch OFF,
disconnect both battery terminals and wait at least three
minutes.
Do not use air or electric tools when removing or
installing the ...
Work Flow
Work Flow
OVERALL SEQUENCE
DETAILED FLOW
INTERVIEW CUSTOMER
Interview the customer to obtain as much information
as possible about the conditions and environment under which the malfunction
occurred.
...
