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

Nissan Sentra B18 (2020-2025) Service Manual / Steering / Steering System :: Dtc/circuit Diagnosis / B24f4-12 Steering Heater Relay / Dtc Diagnosis Procedure

DTC Diagnosis Procedure

CHECK FUSE

Ignition switch OFF.

Check that any of the following fuse is not blown (open):

Signal name	Fuse No.	Capacity
Ignition ON power supply	6	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.)
M75	1	Ground	Battery voltage

(+)

(-)

Voltage

(Approx.)

Heated steering wheel relay

Connector

Terminal

M75

Ground

Battery voltage

Is the inspection result normal?

YES>>

GO TO 3.

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 >>
GO TO 4.
NO >>
Replace heated steering wheel relay.

CHECK HEATED STEERING WHEEL RELAY CONTROL SIGNAL

Ignition switch OFF.
Connect heated steering wheel relay connector.
Ignition switch ON.

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

(+)		(–)	Condition		Voltage (Approx.)
A/C auto amp.
Connector	Terminal
M34	56	Ground	Heated steering wheel relay	OFF	Battery voltage
M34	56	Ground	Heated steering wheel relay	ON	0 - 0.5 V

Is the inspection result normal?

YES >>

Replace A/C auto amp. Refer to Removal and Installation.

NO >>

GO TO 5.

CHECK HEATED STEERING WHEEL RELAY CONTROL SIGNAL CIRCUIT

Ignition switch OFF.
Disconnect A/C auto amp. connector and heated steering wheel relay connector.

Check continuity between A/C auto amp. harness connector and heated steering wheel relay harness connector.

A/C auto amp.		Heated steering wheel relay		Continuity
Connector	Terminal	Connector	Terminal	Continuity
M34	56	M75	2	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 6.

NO >>

Repair or replace harness.

CHECK INTERMITTENT INCIDENT
1. Check intermittent incident.
  
  Refer to Intermittent Incident.
>>
Inspection End.

Dtc Confirmation Procedure

DTC Confirmation Procedure PERFORM DTC CONFIRMATION PROCEDURE CONSULT Ignition switch ON. ...

B24f4-14 Steering Heater Relay

...

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