Nissan Sentra B18 (2020-2025) Service Manual: Diagnosis Procedure

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

Component Function Check CHECK HEATED STEERING WHEEL RELAY Check that heated steering wheel heater warms to the preset temperature when oper ...

Component Inspection

Component Inspection CHECK HEATED STEERING WHEEL RELAY CONTINUITY Check continuity between heated steering wheel relay terminals. ...

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Diagnosis Procedure
Diagnosis Procedure CHECK DTC WITH COMBINATION METER Check that DTC is not detected with combination meter. Refer to DTC Index (with Type A meter) or DTC Index (with Type B meter). Is the inspection result normal? ...