Nissan Sentra B18 (2020-2025) Service Manual: Power Supply and Ground Circuit
Diagnosis Procedure
Diagnosis Procedure
-
CHECK FUSE
Check that the following fuse is not blown:
Signal name
Fuse No.
Ignition power supply
2 (10 A)
Is the fuse blown?
YES >>Replace the blown fuse after repairing the affected circuit.
NO >>GO TO 2.
-
CHECK ADAS CONTROL UNIT 2 POWER SUPPLY CIRCUIT
Check voltage between ADAS control unit 2 harness connector and ground.
Terminal
Condition
Voltage
(Approx.)
(+)
(–)
ADAS control unit 2
Ground
Ignition switch
Connector
Terminal
M148
16
OFF
0 V
ON
Battery voltage
Is the inspection result normal?
YES >>GO TO 3.
NO >>Repair the ADAS control unit 2 power supply circuit.
-
CHECK ADAS CONTROL UNIT 2 GROUND CIRCUIT
-
Turn the ignition switch OFF.
-
Disconnect the ADAS control unit 2 harness connector.
-
Check for continuity between ADAS control unit 2 harness connector and ground.
ADAS control unit 2
Ground
Continuity
Connector
Terminal
M148
2
Yes
Is the inspection result normal?
YES >>Inspection End.
NO >>Repair the ADAS control unit 2 ground circuit.
-
Other materials:
U0073-00 Can Comm Circuit
Dtc Description
DTC Description
DTC DETECTION LOGIC
DTC No.
CONSULT screen terms
(Trouble diagnosis content)
DTC detection condition
...
P0420 Three Way Catalyst Function
Dtc Description
DTC Description
The ECM monitors the switching frequency ratio of air fuel ratio
(A/F) sensor 1 and heated oxygen sensor 2.
A three way catalyst (manifold) with high oxygen storage capacity
will indicate a low switching frequency of heated oxygen sensor 2. As oxygen ...
Active Grille Shutter
Component Inspection
Component Inspection
CHECK ACTIVE GRILLE SHUTTER
With CONSULT
Start the engine.
Select “ACTIVE GRILLE
SHUTTER” in “ACTIVE TEST” mode of
“ENGINE” using CONSULT.
...