Nissan Maxima Service and Repair Manual: B2578, B2579 in-vehicle sensor

Description

In-vehicle Sensor

Nissan Maxima. Description

  • The in-vehicle sensor (1) is located on instrument lower cover (LH).
  • It converts variations in compartment air temperature drawn from the aspirator into a resistance value. It is then input into the A/C auto amp.

In-vehicle Sensor Circuit

Nissan Maxima. In-vehicle Sensor Circuit

Aspirator

Nissan Maxima. Aspirator

The aspirator (1) is located on driver side of heater & cooling unit assembly. It produces vacuum pressure due to air discharged from the heater & cooling unit assembly, continuously taking compartment air in the aspirator.

Nissan Maxima. Aspirator

DTC Logic

DTC DETECTION LOGIC

NOTE: If DTC is displayed along with DTC U1000 or U1010, first diagnose the DTC U1000 or U1010.

DTC CONFIRMATION PROCEDURE

1.CHECK WITH SELF-DIAGNOSIS FUNCTION OF CONSULT

  1. Using CONSULT, perform "SELF-DIAGNOSIS RESULTS" of HVAC.
  2. Check if any DTC No. is displayed in the self-diagnosis results.

NOTE: If DTC is displayed along with DTC U1000 or U1010, first diagnose the DTC U1000 or U1010.

Diagnosis Procedure

1.CHECK IN-VEHICLE SENSOR POWER SUPPLY

  1. Disconnect in-vehicle sensor connector.
  2. Turn ignition switch ON.

    3. Check voltage between in-vehicle sensor harness connector M34 terminal 1 and ground.

Nissan Maxima. CHECK IN-VEHICLE SENSOR POWER SUPPLY

1 - Ground: Approx. 5V

2.CHECK CONTINUITY BETWEEN IN-VEHICLE SENSOR AND A/C AUTO AMP.

  1. Turn ignition switch OFF.
  2. Disconnect A/C auto amp. connector.
  3. Check continuity between in-vehicle sensor harness connector M34 (A) terminal 2 and A/C auto amp. harness connector M37 (B) terminal 37.

Nissan Maxima. CHECK CONTINUITY BETWEEN IN-VEHICLE SENSOR AND A/C AUTO AMP.

2 - 37: Continuity should exist.

3.CHECK IN-VEHICLE SENSOR

Check in-vehicle sensor.

4.CHECK CONTINUITY BETWEEN IN-VEHICLE SENSOR AND A/C AUTO AMP.

  1. Turn ignition switch OFF.
  2. Disconnect A/C auto amp. connector.
  3. Check continuity between in-vehicle sensor harness connector M34 (A) terminal 1 and A/C auto amp. harness connector M37 (B) terminal 36.

Nissan Maxima. CHECK CONTINUITY BETWEEN IN-VEHICLE SENSOR AND A/C AUTO AMP.

1 - 36: Continuity should exist.

  1. Check continuity between in-vehicle sensor harness connector M34 (A) terminal 1 and ground.

1 - Ground: Continuity should not exist.

Component Inspection

1.CHECK IN-VEHICLE SENSOR

  1. Turn ignition switch OFF.
  2. Disconnect in-vehicle sensor connector.
  3. Check resistance between in-vehicle sensor terminals.

Nissan Maxima. CHECK IN-VEHICLE SENSOR

    B257B, B257C ambient sensor
    Description COMPONENT DESCRIPTION Ambient Sensor The ambient sensor (1) is installed to the front bumper reinforcement. It detects ambient temperature and converts it into a resistance va ...

    B2581, B2582 intake sensor
    Description Intake Sensor The intake sensor is located on the evaporator. It converts air temperature after it passes through the evaporator into a resistance value which is then input to the ...

    Other materials:

    Harness
    Harness Layout HOW TO READ HARNESS LAYOUT The following Harness Layouts use a map style grid to help locate connectors on the drawings: Main Harness, Console Sub-harness and Console Switch Subharness Engine Room Harness and Front End Module Harness Engine Room Harness (Passenger Comp ...

    Hazard switch
    Exploded View Hazard switch Cluster lid D Removal and Installation REMOVAL Remove cluster lid D. Refer to IP-18, "Removal and Installation". Disconnect the harness connector from the hazard switch. Remove the hazard switch. INSTALLATION Installation is in the reverse order o ...

    Preparation
    PREPARATION Special Service Tool The actual shapes of the tools may differ from those illustrated here. HFC-134a (R-134a) Service Tool and Equipment Do not mix HFC-134a (R-134a) refrigerant and/or its specified oil with CFC-12 (R-12) refrigerant and/or its oil. Separate and non-interchang ...

    Nissan Maxima Owners Manual

    Nissan Maxima Service and Repair Manual

    © 2017-2023 Copyright www.nimainfo.com
    0.0056