Nissan Sentra B18 (2020-2025) Service Manual: Heated Steering Wheel Relay
Component Function Check
Component Function Check
-
CHECK HEATED STEERING WHEEL RELAY
-
Check that heated steering wheel heater warms to the preset temperature when operating the heated steering wheel switch.
Is the inspection result normal?
YES >>Inspection End.
NO >>Refer to Diagnosis Procedure.
-
Diagnosis Procedure
Diagnosis Procedure
-
CHECK FUSE
-
-
Ignition switch OFF.
-
Check that any of the following fuses are not blown (open):
Signal name
Fuse No.
Capacity
Ignition power supply
6
10 A
44
10 A
-
Is the inspection result normal?
YES >>GO TO 2.
NO >>Replace the blown fuse after repairing the affected circuit.
-
-
CHECK HEATED STEERING WHEEL RELAY POWER SUPPLY
-
-
Disconnect heated steering wheel relay connector.
-
Ignition switch ON.
-
Check voltage between heated steering wheel relay harness connector and ground.
(+)
(-)
Voltage
(Approx.)
Heated steering wheel relay
Connector
Terminal
M75
1
Ground
Battery voltage
3
-
Is the inspection result normal?
YES >>GO TO 3.
NO >>Repair or replace harness.
-
-
CHECK HEATED STEERING WHEEL RELAY CONTROL SIGNAL CIRCUIT
-
-
Ignition switch OFF.
-
Disconnect A/C auto amp. connector.
-
Check continuity between heated steering wheel relay harness connector and A/C auto amp. harness connector.
Heated steering wheel relay
A/C auto amp.
Continuity
Connector
Terminal
Connector
Terminal
M75
2
M34
56
Yes
-
Check continuity between A/C auto amp. harness connector and ground.
A/C auto amp.
–
Continuity
Connector
Terminal
M34
56
Ground
No
-
Is the inspection result normal?
YES >>GO TO 4.
NO >>Repair or replace harness.
-
-
CHECK HEATED STEERING WHEEL RELAY
-
Check heated steering wheel relay.
Refer to Component Inspection.
Is the inspection result normal?
YES >>Inspection End.
NO >>Replace heated steering wheel relay.
-
Component Inspection
Component Inspection
-
CHECK HEATED STEERING WHEEL RELAY CONTINUITY
-
Check continuity between heated steering wheel relay terminals.
CAUTION:
-
Connect the fuse between the terminals when applying the voltage.
-
To prevent damage, always observe the correct polarity.
-
Prevent short-circuit.
Heated steering wheel relay
Condition
Continuity
Terminals
3 − 5
Apply 12 V direct current between terminals 1 and 2.
Yes
Other conditions.
No
-
Is the inspection result normal?
YES >>Inspection End.
NO >>Replace heated steering wheel relay. Refer to Component Parts Location.
-
Other materials:
P0171 Fuel Injection System Function
Dtc Description
DTC Description
With the Air/Fuel Mixture Ratio Self-Learning Control, the actual
mixture ratio can be brought closely to the theoretical mixture ratio based on
the mixture ratio feedback signal from A/F sensor 1. The ECM calculatesthe
necessary compensation to corre ...
U2148-87 Can Comm Err (brake Control Unit)
Dtc Description
DTC Description
DESCRIPTION
CAN (Controller Area Network) is a serial communication
line for real time applications. It is an on-Nissan Sentra vehicle multiplex communication
line with high data communication speed and excellent error detection
ability. Modern Nissan ...
Primary Pressure Solenoid Valve Circuit
Diagnosis Procedure
Diagnosis Procedure
CHECK HARNESS CONNECTOR
Ignition switch OFF.
Check the mating condition of TCM
harness connector and CVT unit harness
connector.
Is the inspect ...