Nissan Sentra B18 (2020-2025) Service Manual: 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) |
Diagnosis condition |
Ignition switch ON |
|
Signal (Terminal) |
Intake sensor signal |
||
|
Threshold |
The intake sensor recognition temperature is too low [less than -44°F (-42°C)] |
||
|
Diagnosis delay time |
2 seconds or more |
||
POSSIBLE CAUSE
-
Intake sensor
-
A/C amp.
-
Harness or connectors (The sensor circuit is open or shorted to battery)
FAIL-SAFE
—
Confirmation Procedure
Confirmation Procedure
-
PERFORM DTC CONFIRMATION PROCEDURE
-
CONSULT-
Ignition switch ON.
-
Select “Self Diagnostic Result” mode of “HVAC”.
-
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 amp. harness connector.
A/C amp.
Voltage
(Approx.)
Connector
Terminals
+
-
M81
23
26
-
Is the inspection result normal?
YES >>Replace A/C 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.)
Intake sensor
Connector
Terminal
M169
1
Ground
5 V
-
Is the inspection result normal?
YES >>GO TO 3.
NO >>GO TO 5.
-
-
CHECK INTAKE SENSOR GROUND CIRCUIT FOR OPEN
-
-
Ignition switch OFF.
-
Disconnect A/C amp. connector.
-
Check continuity between intake sensor harness connector and A/C amp. harness connector.
Intake sensor
A/C amp.
Continuity
Connector
Terminal
Connector
Terminal
M169
2
M81
26
Yes
-
Is the inspection result normal?
YES >>GO TO 4.
NO >>Repair harness or connector.
-
-
CHECK INTAKE SENSOR
-
Check intake sensor. Refer to Component Inspection.
Is the inspection result normal?
YES >>Replace A/C amp. Refer to Removal and Installation.
NO >>Replace intake sensor. Refer to Removal and Installation.
-
-
CHECK INTAKE SENSOR POWER SUPPLY CIRCUIT FOR OPEN
-
-
Ignition switch OFF.
-
Disconnect A/C amp. connector.
-
Check continuity between intake sensor harness connector and A/C amp. harness connector.
Intake sensor
A/C amp.
Continuity
Connector
Terminal
Connector
Terminal
M169
1
M81
23
Yes
-
Is the inspection result normal?
YES >>GO TO 6.
NO >>Repair harness or connector.
-
-
CHECK INTAKE SENSOR POWER SUPPLY CIRCUIT FOR SHORT
-
Check voltage between intake sensor harness connector and ground.
+
-
Voltage
(Approx.)
Intake sensor
Connector
Terminal
M169
1
Ground
0 V
Is the inspection result normal?
YES >>Replace A/C amp. Refer to Removal and Installation.
NO >>Repair harness or connector.
-
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