Nissan Sentra B18 (2020-2025) Service Manual: P010a Manifold Absolute Pressure Sensor

Nissan Sentra B18 (2020-2025) Service Manual / Engine / Work Procedure (After Replacing Electric Throttle Control Actuator) / Dtc/circuit Diagnosis / P010a Manifold Absolute Pressure Sensor

Dtc Description

DTC Description

DTC DETECTION LOGIC

DTC	CONSULT screen terms (Trouble diagnosis content)	DTC detection condition
P010A	ABSL PRES SEN/CIRC (Mass or volume air flow sensor “B” circuit)	A	Diagnosis condition	Engine running at idle
			Signal (terminal)	Manifold absolute pressure (MAP) sensor signal
			Threshold	An excessively low voltage from the sensor is sent to ECM
			Diagnosis delay time	—
		B	Diagnosis condition	Engine running at idle
			Signal (terminal)	Manifold absolute pressure (MAP) sensor signal
			Threshold	An excessively high voltage from the sensor is sent to ECM
			Diagnosis delay time	—

POSSIBLE CAUSE

Harness or connectors [Manifold absolute pressure (MAP) sensor circuit is open or shorted.]
Manifold absolute pressure (MAP) sensor

FAIL-SAFE

Not applicable

Confirmation Procedure

Confirmation Procedure

PRECONDITIONING

If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at least 10 seconds before conducting the next test.

>>
GO TO 2.
PERFORM DTC CONFIRMATION PROCEDURE
1. Start engine and let it idle for 10 seconds.
2. Check 1st trip DTC.
Is 1st trip DTC detected?
YES >>
Proceed to DTC Diagnosis Procedure.
NO-1 >>
To check malfunction symptom before repair: Refer to Intermittent Incident.
NO-2 >>
Confirmation after repair: INSPECTION END

Dtc Diagnosis Procedure

DTC Diagnosis Procedure

CHECK GROUND CONNECTION
1. Turn ignition switch OFF.
2. Check ground connection E8. Refer to Ground Inspection.
Is the inspection result normal?
YES >>
GO TO 2.
NO >>
Repair or replace ground connection.
CHECK MAP SENSOR

Check MAP sensor.

Is the inspection result normal?
YES >>
GO TO 3.
NO >>
Replace MAP sensor. Refer to Removal and Installation.

CHECK MAP SENSOR POWER SUPPLY

Turn ignition switch OFF.
Disconnect MAP sensor harness connector.
Turn ignition switch ON.

Check the voltage between MAP sensor harness connector and ground.

+	−	Voltage (Approx.)
F76	1	Ground	5 V

−

Voltage

(Approx.)

MAP sensor

Connector

Terminal

F76

Ground

5 V

Is the inspection result normal?

YES >>

GO TO 5.

NO >>

GO TO 4.

CHECK MAP SENSOR POWER SUPPLY CIRCUIT

Turn ignition switch OFF.
Disconnect ECM harness connector.

Check the continuity between ECM harness connector and MAP sensor harness connector.

ECM		MAP sensor		Continuity
Connector	Terminal	Connector	Terminal	Continuity
F24	54	F76	1	Existed

Also check harness for short to power and short to ground.

Is the inspection result normal?

YES >>

Perform the trouble diagnosis for ECM power supply circuit. Refer to Diagnosis Procedure.

NO >>

Repair or replace error-detected parts.

CHECK MAP SENSOR GROUND CIRCUIT

Turn ignition switch OFF.
Disconnect ECM harness connector.

Check the continuity between ECM harness connector and MAP sensor harness connector.

ECM		MAP sensor		Continuity
Connector	Terminal	Connector	Terminal	Continuity
F24	49	F76	3	Existed

Also check harness for short to power.

Is the inspection result normal?

YES >>

GO TO 6.

NO >>

Repair or replace error-detected parts.

CHECK MAP SENSOR CIRCUIT

Check the continuity between ECM harness connector and MAP sensor harness connector.

ECM		MAP sensor		Continuity
Connector	Terminal	Connector	Terminal	Continuity
F24	52	F76	2	Existed

Also check harness for short to power and short to ground.

Is the inspection result normal?

YES >>

INSPECTION END

NO >>

Repair or replace error-detected parts.

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