AIR CONDITIONING SYSTEM(for Manual Air Conditioning System), Diagnostic DTC:B1451

DTC Code DTC Name
B1451 Compressor Solenoid Circuit

DESCRIPTION

In this circuit, the compressor assembly with pulley receives a refrigerant compression demand signal from the air conditioning amplifier assembly.

Based on this signal, the compressor assembly with pulley changes the amount of compressor output.

DTC No. DTC Detection Condition Trouble Area
B1451 An open or short in the cooler compressor solenoid circuit.

  • Compressor assembly with pulley

  • Harness or connector between air conditioning amplifier assembly and compressor assembly with pulley

  • Air conditioning amplifier assembly

WIRING DIAGRAM

A005L2KE04
*a COMPRESSOR ASSEMBLY WITH PULLEY
*b AIR CONDITIONING AMPLIFIER ASSEMBLY

PROCEDURE


  1. INSPECT COMPRESSOR ASSEMBLY WITH PULLEY


    1. for 1ND-TV


      1. Remove the compressor assembly with pulley Click here.

      2. Inspect the compressor assembly with pulley Click here.

    2. for 1NR-FE


      1. Remove the compressor assembly with pulley Click here.

      2. Inspect the compressor assembly with pulley Click here.

    3. for 1NZ-FE


      1. Remove the compressor assembly with pulley Click here.

      2. Inspect the compressor assembly with pulley Click here.

      Result
      Result Proceed to
      OK A
      NG (for 1ND-TV) B
      NG (for 1NR-FE) C
      NG (for 1NZ-FE) D

    B

    REPLACE COMPRESSOR ASSEMBLY WITH PULLEY Click here

    C

    REPLACE COMPRESSOR ASSEMBLY WITH PULLEY Click here

    D

    REPLACE COMPRESSOR ASSEMBLY WITH PULLEY Click here

    A

  2. CHECK HARNESS AND CONNECTOR (COMPRESSOR ASSEMBLY WITH PULLEY - BODY GROUND)


    1. Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition
      B77-1 - Body ground Always Below 1 Ω

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  3. CHECK HARNESS AND CONNECTOR (COMPRESSOR ASSEMBLY WITH PULLEY - AIR CONDITIONING AMPLIFIER)


    1. Disconnect the F41 air conditioning amplifier assembly connector.

    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance (Check for Open)
      Tester Connection Condition Specified Condition
      B77-2 - F41-11 (SOL+) Always Below 1 Ω
      Standard Resistance (Check for Short)
      Tester Connection Condition Specified Condition
      B77-2 - Body ground Always 10 kΩ or higher
      Result
      Result Proceed to
      NG A
      OK (When troubleshooting according to Problem Symptoms Table) B
      OK (When troubleshooting according to DTC) C

    A

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    B

    PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE Click here

    C

    REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY Click here