Nissan Sentra manuals

Nissan Sentra Service Manual: P0111 IAT Sensor

DTC Logic

DTC DETECTION LOGIC

DTC No.

CONSULT screen terms (Trouble diagnosis content)

DTC detecting condition

Possible cause

P0111 IAT SENSOR 1 B1 (Intake air temperature sensor 1 circuit range/performance bank 1) The comparison result of signals transmitted to ECM from each temperature sensor (IAT sensor, ECT sensor, FTT sensor, and EOT sensor) shows that the voltage signal of the IAT sensor is higher/lower than that of other temperature sensors when the engine is started with its cold state.
  • Harness or connectors (High or low resistance in the IAT sensor circuit)
  • IAT sensor

DTC CONFIRMATION PROCEDURE

1.INSPECTION START

Is it necessary to erase permanent DTC? YES >> GO TO 3.

NO >> GO TO 2.

2.PERFORM COMPONENT FUNCTION CHECK

Perform component function check. Refer to EC-193, "Component Function Check".

NOTE:

Use the component function check to check the overall function of the IAT sensor circuit. During this check, a 1st trip DTC might not be confirmed.

Is the inspection result normal? YES >> INSPECTION END

NO >> Proceed to EC-193, "Diagnosis Procedure".

3.PRECONDITIONING

If DTC CONFIRMATION PROCEDURE has been previously conducted, always perform the following procedure before conducting the next test.

  1. Turn ignition switch OFF and wait at least 10 seconds.
  2. Turn ignition switch ON.
  3. Turn ignition switch OFF and wait at least 10 seconds.

TESTING CONDITION:

>> GO TO 4.

4.PERFORM DTC CONFIRMATION PROCEDURE

  1. Move the vehicle to a cool place.

NOTE:

Cool the vehicle in an environment of ambient air temperature between −10В°C (14В°F) and 35В°C (95В°F).

  1. Turn ignition switch OFF and leave the vehicle for 12 hours.

CAUTION:

Never turn ignition switch ON during this procedure.

NOTE:

The vehicle must be cooled with the food open.

  1. Start engine and let it idle for 5 minutes or more.

CAUTION:

Never turn ignition switch OFF during idling.

  1. Check 1st trip DTC.

Is 1st trip DTC detected? YES >> Proceed to EC-193, "Diagnosis Procedure".

NO >> INSPECTION END

Component Function Check

1.CHECK INTAKE AIR TEMPERATURE (IAT) SENSOR

  1. Turn ignition switch OFF.
  2. Disconnect mass air flow sensor harness connector and reconnect it again.
  3. Turn ignition switch ON.
  4. Select “DATA MONITOR” mode with CONSULT
  5. Check that “INT/A TEMP SEN” indicates as per following condition.

Is the inspection result normal?


Is the inspection result normal? YES >> Check intermittent incident. Refer to GI-39, "Intermittent Incident".

NO >> Proceed to EC-193, "Diagnosis Procedure".

Diagnosis Procedure

1.CHECK INTAKE AIR TEMPERATURE (IAT) SENSOR

Check intake air temperature sensor. Refer toEC-193, "Component Inspection".

Is the inspection result normal? YES >> Check intermittent incident. Refer to GI-39, "Intermittent Incident".

NO >> Replace mass air flow sensor (with intake air temperature sensor). Refer to EM-25, "Exploded View".

Component Inspection

1.CHECK INTAKE AIR TEMPERATURE SENSOR

  1. Turn ignition switch OFF.
  2. Disconnect mass air flow sensor harness connector and reconnect it again.
  3. Turn ignition switch ON.
  4. Select “DATA MONITOR” mode with CONSULT.
  5. Check that the indicated value of “INT/A TEMP SEN” is almost the same as intake air temperature.

Is the inspection result normal? YES >> INSPECTION END

NO >> Replace mass air flow sensor (with intake air temperature sensor). Refer to EM-25, "Exploded View".

P0101, P0102, P0103 MAF Sensor
DTC Logic DTC DETECTION LOGIC DTC No. CONSULT screen terms (Trouble diagnosis content) DTC detecting condition Possible cause P0101 MAF SEN/CIRCUIT-B1 (Mass or volu ...

P0112, P0113 IAT Sensor
DTC Logic DTC DETECTION LOGIC DTC No. CONSULT screen terms (Trouble diagnosis content) DTC detecting condition Possible cause P0112 IAT SEN/CIRCUIT- B1 (Intake air ...

Other materials:

Intake manifold runner control
INTAKE MANIFOLD RUNNER CONTROL : System Description SYSTEM DIAGRAM SYSTEM DESCRIPTION Intake manifold runner control valve has a valve portion in the intake passage of each cylinder. While idling and during low engine coolant temperature, the intake manifold runner control valve close ...

B1428 Seat belt buckle switch LH
Description DTC B1428 SEAT BELT BUCKLE SWITCH LH The air bag diagnosis sensor unit monitors the seat belt buckle switch LH status. If the control unit detects an open or short condition in the circuit, it will set the DTC. PART LOCATION Refer to SRC-5, "Component Parts Location". ...

Removal and installation
Ipdm e/r Exploded view Ipdm e/r IPDM E/R cover A Ipdm e/r cover b Removal and installation Caution: Ipdm e/r integrated relays are not serviceable and must not be removed from unit. Removal Remove inlet air duct (upper). Refer to em-25, "removal and installation" ...

© 2014-2024 Copyright www.nisentra.com