AIR CONDITIONING SYSTEM, Diagnostic DTC:B1451/51

DESCRIPTION

• 1. except 2GR-FE

  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.

• 2. for 2GR-FE

  In this circuit, the cooler compressor assembly (compressor solenoid) receives a refrigerant compression demand signal from the air conditioning amplifier assembly.

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

• *1: except 2GR-FE

• *2: for 2GR-FE

WIRING DIAGRAM

PROCEDURE

1. CONFIRM MODEL

   Result
   Result Proceed to except 2GR-FE A for 2GR-FE B

   
   

   B

   INSPECT COOLER COMPRESSOR ASSEMBLY (COMPRESSOR SOLENOID) Click here

   A

2. INSPECT COMPRESSOR ASSEMBLY WITH PULLEY (COMPRESSOR SOLENOID)

   
   
   1. 

      Text in Illustration

      *a	Component without harness connected (Compressor Assembly with Pulley (Compressor Solenoid))

      Disconnect the D66 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 1 (SOL-) - 2 (SOL+) 20°C (68°F) 10.1 to 11.1 Ω

   
   

   NG

   REPLACE COMPRESSOR ASSEMBLY WITH PULLEY (COMPRESSOR SOLENOID) Click here

   OK

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

   
   

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

      Standard Resistance
      Tester Connection Condition Specified Condition D66-1 (SOL-) - Body ground Always Below 1 Ω

   
   

   NG

   REPAIR OR REPLACE HARNESS OR CONNECTOR

   OK

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

   
   

   1. Disconnect the H54 air conditioning amplifier assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition H54-2 (SOL+) - D66-2 (SOL+) Always Below 1 Ω H54-2 (SOL+) - 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 the 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

5. INSPECT COOLER COMPRESSOR ASSEMBLY (COMPRESSOR SOLENOID)

   
   
   1. 

      Text in Illustration

      *a	Component without harness connected (Cooler Compressor Assembly (Compressor Solenoid))

      Disconnect the D66 cooler compressor assembly (compressor solenoid) connector.

   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

   
   

   NG

   REPLACE COOLER COMPRESSOR ASSEMBLY (COMPRESSOR SOLENOID) Click here

   OK

6. CHECK HARNESS AND CONNECTOR (COOLER COMPRESSOR ASSEMBLY (COMPRESSOR SOLENOID) - BODY GROUND)

   
   

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

      Standard Resistance
      Tester Connection Condition Specified Condition D66-1 (SOL-) - Body ground Always Below 1 Ω

   
   

   NG

   REPAIR OR REPLACE HARNESS OR CONNECTOR

   OK

7. CHECK HARNESS AND CONNECTOR (COOLER COMPRESSOR ASSEMBLY (COMPRESSOR SOLENOID) - AIR CONDITIONING AMPLIFIER ASSEMBLY)

   
   

   1. Disconnect the H54 air conditioning amplifier assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition H54-2 (SOL+) - D66-2 (SOL+) Always Below 1 Ω H54-2 (SOL+) - 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 the 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