Nissan Sentra B18 (2020-2025) Service Manual / Steering / Steering System :: Dtc/circuit Diagnosis / Heated Steering Wheel Relay

Nissan Sentra B18 (2020-2025) Service Manual: Heated Steering Wheel Relay

Component Function Check

CHECK HEATED STEERING WHEEL RELAY
1. 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

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
Ignition power supply	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
M75	3	Ground	Battery voltage

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	Continuity
M75	2	M34	56	Yes

Check continuity between A/C auto amp. harness connector and ground.

A/C auto amp.		–	Continuity
Connector	Terminal	–	Continuity
M34	56	Ground	No

Is the inspection result normal?

YES >>

GO TO 4.

NO >>

Repair or replace harness.

CHECK HEATED STEERING WHEEL RELAY
1. 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

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	Condition	Continuity
3 − 5	Apply 12 V direct current between terminals 1 and 2.	Yes
3 − 5	Other conditions.	No

Is the inspection result normal?

YES >>

Inspection End.

NO >>

Replace heated steering wheel relay. Refer to Component Parts Location.

 B24f4-14 Steering Heater Relay

Dtc Description DTC Description DTC DETECTION LOGIC DTC No. CONSULT screen terms (Trouble diagnosis name) DTC detection condition B24F4-14 STEERING HEATER RELAY (Steering heater...

 Heated Steering Wheel System

Component Function Check Component Function Check CHECK HEATED STEERING WHEEL SYSTEM Check operate heated steering wheel system. Refer to System Description. Is the inspection r...

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