СИСТЕМА ECD > Air Conditioning Cut Control Circuit

для подготовки Нажмите здесь


DESCRIPTION

This circuit cuts air conditioning operation during vehicle acceleration in order to increase acceleration performance. During acceleration with the vehicle speed at 30 km/h (19 mph) or less and the accelerator pedal opening angle at 45° or more, the A/C magnetic switch is turned off for several seconds.
The air conditioning is also controlled using the engine coolant temperature output from the ECM to the A/C amplifier.

WIRING DIAGRAM


A0095ZXE04


INSPECTION PROCEDURE


When using intelligent tester:

1.READ VALUE USING INTELLIGENT TESTER (CHECK OPERATION OF AIR CONDITIONING CUT CONTROL)

  1. Connect the intelligent tester to the DLC3.

  1. Start the engine and turn the air conditioning switch on.

    УКАЗАНИЕ:
    The A/C magnetic clutch is turned on.

  1. Enter the following menus: Powertrain / Engine and ECT / Active Test / A/C Cut SIG.

  1. Check operation of the A/C magnetic clutch cut when air conditioning cut control is operated by the intelligent tester.

    OK:
    A/C magnetic clutch is turned off.



NG
Перейдите к шагу 2
OK

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE (Нажмите здесь)  

2.INSPECT ECM (ACT VOLTAGE)


    A00971KE02

  1. Start the engine.

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

    Standard Voltage:
    Tester Connection
    		Condition
    		Specified Condition
    G62-8 (ACT) - Body ground
    		Engine idling
    		11 to 14 V
    G62-8 (ACT) - Body ground
    		Ignition switch ON, engine stopped
    		0 to 3 V

    Text in Illustration 
    *a
    		Component with harness connected
    (ECM)



NG
Перейдите к шагу 3
OK

REPLACE ECM (Нажмите здесь)  

3.CHECK HARNESS AND CONNECTOR (ECM - AIR CONDITIONING AMPLIFIER)

  1. Disconnect the A/C amplifier connector.

  1. Disconnect the ECM connector.

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

    Standard Resistance (Check for Open):
    Tester Connection
    		Condition
    		Specified Condition
    G25-27 (ACT) - G62-8 (ACT)
    		Always
    		Below 1 Ω

    Standard Resistance (Check for Short):
    Tester Connection
    		Condition
    		Specified Condition
    G25-27 (ACT) or G62-8 (ACT) - Body ground
    		Always
    		10 kΩ or higher

  1. Reconnect the A/C amplifier connector.

  1. Reconnect the ECM connector.



NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

REPLACE AIR CONDITIONING AMPLIFIER (Нажмите здесь)  


When not using intelligent tester:

1.CHECK ECM (ACT VOLTAGE)


    A00971KE02

  1. Start the engine.

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

    Standard Voltage:
    Tester Connection
    		Condition
    		Specified Condition
    G62-8 (ACT) - Body ground
    		Engine idling
    		11 to 14 V
    G62-8 (ACT) - Body ground
    		Ignition switch ON, engine stopped
    		0 to 3 V

    Text in Illustration 
    *a
    		Component with harness connected
    (ECM)



NG
Перейдите к шагу 2
OK

REPLACE ECM (Нажмите здесь)  

2.CHECK HARNESS AND CONNECTOR (ECM - AIR CONDITIONING AMPLIFIER)

  1. Disconnect the A/C amplifier connector.

  1. Disconnect the ECM connector.

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

    Standard Resistance (Check for Open):
    Tester Connection
    		Condition
    		Specified Condition
    G25-27 (ACT) - G62-8 (ACT)
    		Always
    		Below 1 Ω

    Standard Resistance (Check for Short):
    Tester Connection
    		Condition
    		Specified Condition
    G25-27 (ACT) or G62-8 (ACT) - Body ground
    		Always
    		10 kΩ or higher

  1. Reconnect the A/C amplifier connector.

  1. Reconnect the ECM connector.



NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

REPLACE AIR CONDITIONING AMPLIFIER (Нажмите здесь)