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 (compressor solenoid) receives a refrigerant compression demand signal from the air conditioning amplifier assembly.

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

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

Memory

B1451

Compressor Solenoid Circuit

Open or short in compressor solenoid circuit

  • Compressor assembly with pulley (compressor solenoid)

  • Harness or connector

  • Air conditioning amplifier assembly

-

WIRING DIAGRAM

E229254E30

PROCEDURE

  1. INSPECT COMPRESSOR ASSEMBLY WITH PULLEY (COMPRESSOR SOLENOID)

    1. E180798N02

      Remove the compressor assembly with pulley (compressor solenoid).

      for 1AD-FTV, 2AD-FHV, 2AD-CCo, 2AD-DPF:

      Click here

      for 2AR-FE:

      Click here

      for 3ZR-FE, 3ZR-FAE:

      Click here

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

      Standard Resistance

      Tester Connection

      Condition

      Specified Condition

      1 (SOL-) - 2 (SOL+)

      20°C (68°F)

      10.1 to 11.1 Ω

    Result

    Proceed to

    OK

    NG
    NG

    REPLACE COMPRESSOR ASSEMBLY WITH PULLEY (COMPRESSOR SOLENOID)

    for 1AD-FTV, 2AD-FHV, 2AD-CCo, 2AD-DPF:

    Click here

    for 2AR-FE:

    Click here

    for 3ZR-FE, 3ZR-FAE:

    Click here

    OK

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

    1. E185639C01

      *a

      Front view of wire harness connector

      (to Compressor Assembly with Pulley)

      Disconnect the compressor assembly with pulley (compressor solenoid) connector.

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

      Standard Resistance

      Tester Connection

      Condition

      Specified Condition

      B30-1 (SOL-) - Body ground

      Always

      Below 1 Ω

    Result

    Proceed to

    OK

    NG
    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

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

    1. Disconnect the G80 air conditioning amplifier assembly connector.

    2. Disconnect the B30 compressor with pulley assembly (compressor solenoid) connector.

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

      Standard Resistance

      Tester Connection

      Condition

      Specified Condition

      G80-11 (SOL+) - B30-2 (SOL+)

      Always

      Below 1 Ω

      G80-11 (SOL+) - Body ground

      Always

      10 kΩ or higher

    Result

    Result

    Proceed to

    OK (When troubleshooting according to Problem Symptoms Table)

    A

    OK (When troubleshooting according to the DTC)

    B

    NG

    C
    A

    PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

    Click here

    B

    REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY

    Click here

    C

    REPAIR OR REPLACE HARNESS OR CONNECTOR