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:

    B2112 sliding motor
    Description The seat sliding motor is installed to the seat frame. The seat sliding motor is activated with the driver seat control unit. Slides the seat forward/backward by changing the rotation direction of sliding motor. DTC Logic DTC DETECTION LOGIC DTC No. Trouble diag ...

    P0453 evap control system pressure sensor
    Description The EVAP control system pressure sensor detects pressure in the purge line. The sensor output voltage to the ECM increases as pressure increases. DTC Logic DTC DETECTION LOGIC DTC CONFIRMATION PROCEDURE 1.PRECONDITIONING If DTC Confirmation Procedure has been previously ...

    Brake warning lamp
    Description NOTE: 1: Brake warning lamp will turn on in case of parking brake operation (when switch is ON) or of brake fluid level switch operation (when brake fluid is insufficient).  2: After starting engine, brake warning lamp is turned off. Component Function Check 1.B ...

    Nissan Maxima Owners Manual

    Nissan Maxima Service and Repair Manual

    © 2017-2021 Copyright www.nimainfo.com
    0.0115