HEATING / AIR CONDITIONING  AIR CONDITIONING SYSTEM(for Automatic Air Conditioning System)  B1451/51  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
B1451/51 Compressor Solenoid Circuit Open or short in compressor solenoid circuit
·

Compressor assembly with pulley (compressor solenoid)

·

Harness or connector between air conditioning amplifier assembly and compressor assembly with pulley (compressor solenoid)

·

Air conditioning amplifier assembly


-

WIRING DIAGRAM

E229254E71
5.01,0.792 5.104,0.969 0.094,0.177 10 false 2 3.833,0.792 3.927,0.969 0.094,0.177 10 false 2 2.448,0.792 2.542,0.969 0.094,0.177 10 false 1 5.229,0.885 5.688,1.063 0.458,0.177 10 false SOL+ 3.385,0.792 3.76,0.969 0.375,0.177 10 false SOL+ 2.625,0.792 2.969,0.969 0.344,0.177 10 false SOL- 4.823,3.5 5.302,3.76 0.479,0.26 10 false E102 4.823,3.667 6.469,4 1.646,0.333 10 false Air Conditioning Amplifier Assembly 2.177,1.396 4.323,1.792 2.146,0.396 10 false Compressor Assembly with Pulley (Compressor Solenoid) 2.188,1.24 2.448,1.417 0.26,0.177 10 false B8

PROCEDURE

1.INSPECT COMPRESSOR ASSEMBLY WITH PULLEY (COMPRESSOR SOLENOID)
a.

Disconnect the B8 compressor assembly with pulley (compressor solenoid) connector.


b.
E116970C05
1.115,2.427 1.531,2.01 false 2.344,2.448 1.99,2.01 false 0.24,0.219 0.552,0.375 0.313,0.156 10 *a 0.875,2.458 1.396,2.656 0.521,0.198 10 SOL+ 2.24,2.479 2.583,2.646 0.344,0.167 10 SOL-
*a Component without harness connected
(Compressor Assembly with Pulley (Compressor Solenoid))


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



OK

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

NG

REPLACE COMPRESSOR ASSEMBLY WITH PULLEY (COMPRESSOR SOLENOID)

Click hereVehicle Interior>HEATING / AIR CONDITIONING>COMPRESSOR(for ZR Series Engine)>REMOVAL


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

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

Standard Resistance:
Tester Connection Condition Specified Condition
B8-1 (SOL-) - Body ground Always Below 1 Ω



Result:
Proceed to
OK
NG



OK

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

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

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

Disconnect the E102 air conditioning amplifier assembly connector.


b.

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

Standard Resistance:
Tester Connection Condition Specified Condition
E102-2 (SOL+) - B8-2 (SOL+) Always Below 1 Ω
E102-2 (SOL+) or B8-2 (SOL+) - Body ground Always 10 kΩ or higher



Result:
Result Proceed to
NG A
OK (When troubleshooting according to the 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 hereVehicle Interior>HEATING / AIR CONDITIONING>AIR CONDITIONING SYSTEM(for Automatic Air Conditioning System)>PROBLEM SYMPTOMS TABLE


C

REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY

Click hereVehicle Interior>HEATING / AIR CONDITIONING>AIR CONDITIONING AMPLIFIER>REMOVAL