Nissan Sentra B18 (2020-2025) Service Manual / Ventilation, Heater & Air Conditioner / Heater & Air Conditioning Control System :: Automatic Air Conditioner / Dtc/circuit Diagnosis / B24a4-11 Intake Sensor

Nissan Sentra B18 (2020-2025) Service Manual: B24a4-11 Intake Sensor

Dtc Description

DTC Description

DTC DETECTION LOGIC

DTC No.	CONSULT screen terms (Trouble diagnosis content)	DTC detection condition
B24A4-11	INTAKE SENSOR (Intake sensor)	Diagnosis condition	Ignition switch ON
		Signal (Terminal)	Intake sensor signal
		Threshold	The intake sensor recognition temperature is too high [more than 212°F (100°C)]
		Diagnosis delay time	2 seconds or more

POSSIBLE CAUSE

Intake sensor
A/C auto amp.
Harness or connectors (The sensor circuit is shorted to ground)

FAIL-SAFE

—

Confirmation Procedure

Confirmation Procedure

PERFORM DTC CONFIRMATION PROCEDURE
1. CONSULT
  1. Ignition switch ON.
  2. Select “Self Diagnostic Result” mode of “HVAC”.
  3. Check DTC.
Is DTC detected?
YES >>
Refer to DTC Diagnosis Procedure.
NO >>
To check malfunction symptom before repair: Refer to Intermittent Incident.
NO >>
Confirmation after repair: Inspection End.

Dtc Diagnosis Procedure

DTC Diagnosis Procedure

CHECK INTAKE SENSOR SIGNAL

Ignition switch ON.

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

A/C auto amp.	Voltage (Approx.)
M33	23	26

A/C auto amp.

Voltage

(Approx.)

Connector

Terminals

M33

Is the inspection result normal?

YES >>

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

NO >>

GO TO 2.

CHECK INTAKE SENSOR POWER SUPPLY

Ignition switch OFF.
Disconnect intake sensor connector.
Ignition switch ON.

Check voltage between intake sensor harness connector and ground.

+	-	Voltage (Approx.)
M169	1	Ground	5 V

Voltage

(Approx.)

Intake sensor

Connector

Terminal

M169

Ground

5 V

Is the inspection result normal?

YES >>

GO TO 3.

NO >>

GO TO 4.

CHECK INTAKE SENSOR
1. Check intake sensor. Refer to Diagnosis Procedure.
Is the inspection result normal?
YES >>
Replace A/C auto amp. Refer to Removal and Installation.
NO >>
Replace intake sensor. Refer to Removal and Installation.

CHECK INTAKE SENSOR POWER SUPPLY CIRCUIT FOR SHORT

Ignition switch OFF.
Disconnect A/C auto amp. connector.

Check continuity between intake sensor harness connector and ground.

Intake sensor		—	Continuity
Connector	Terminal	—	Continuity
M169	1	Ground	No

Is the inspection result normal?

YES >>

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

NO >>

Repair harness or connector.

 B20c8-14 Compressor (ecv)

Dtc Description DTC Description DTC DETECTION LOGIC DTC No. CONSULT screen terms (Trouble diagnosis content) DTC detection condition B20C8-14 Compressor (ECV) [Compressor (elect...

 B24a4-15 Intake Sensor

Dtc Description DTC Description DTC DETECTION LOGIC DTC No. CONSULT screen terms (Trouble diagnosis content) DTC detection condition B24A4-15 INTAKE SENSOR (Intake sensor) Diagn...

Other materials:

iPod* player operation
Type-A. Connecting iPod WARNING Do not connect, disconnect, or operate the USB device while driving. Doing so may distract the driver. If distracted, you could lose control of your Nissan Sentra, which could result in an accident causing serious injury. CAUTION Do not force the ...

Interior Lighting System. Symptom Diagnosis. Interior Lighting System Symptoms. Symptom Table
Interior Lighting System Symptoms. Symptom Table Symptom Table Symptom Table Note: Perform the self-diagnosis with CONSULT before the symptom diagnosis. Perform the trouble diagnosis if any DTC is detected. Symptom ...

Rear Window Glass
Exploded View Exploded View 1. Spacer 2. Rear window glass 3. Adhesive ...