ECD SYSTEM(w/ Urea SCR System) Active Control Engine Mount System

DESCRIPTION

The active control engine mount system decreases engine vibration at low engine speed using the vacuum switching valve sub-assembly (for engine mounting). The vacuum switching valve sub-assembly (for engine mounting) is controlled by a pulse signal transmitted to the vacuum switching valve sub-assembly (for engine mounting) from the ECM. The frequency of this pulse signal is matched to the engine speed to decrease engine vibration.

WIRING DIAGRAM

A01XFIBE04

CAUTION / NOTICE / HINT

Note


  • Inspect the fuses for circuits related to this system before performing the following inspection procedure.

  • After replacing the ECM, the new ECM needs registration (See page ) and initialization Click here.

PROCEDURE


  1. INSPECT INTAKE SYSTEM


    1. Inspect intake system Click here.

      Result
      Repair any trouble areas.

    NG

    REPAIR INTAKE SYSTEM

    OK

  2. INSPECT VACUUM SWITCHING VALVE SUB-ASSEMBLY (FOR ENGINE MOUNTING) (RESISTANCE)


    1. Inspect the vacuum switching valve sub-assembly (for engine mounting) Click here.


    NG

    REPLACE VACUUM SWITCHING VALVE SUB-ASSEMBLY (FOR ENGINE MOUNTING) Click here

    OK

  3. INSPECT FRONT ENGINE MOUNTING INSULATOR


    1. Disconnect the vacuum hose from the front engine mount insulator assembly.

    2. Using a vacuum pump, apply vacuum of 80 kPa (600 mmHg, 23.622 in.Hg) and wait for 1 minute.

    3. Check that there is no change in the needle movement of the vacuum pump gauge.

    4. Check that there is no fluid leakage caused by a break in the diaphragm.

      OK
      Vacuum does not leak.

    5. Reconnect the vacuum hose.


    NG

    REPLACE FRONT ENGINE MOUNTING INSULATOR Click here

    OK

  4. INSPECT VACUUM SWITCHING VALVE SUB-ASSEMBLY (FOR ENGINE MOUNTING) (POWER SOURCE VOLTAGE)


    1. B001EJWE01
      Text in Illustration
      *1

      Front view of wire harness connector

      (to Vacuum Switching Valve Sub-assembly (for Engine Mounting))

      Disconnect the vacuum switching valve sub-assembly (for engine mounting) connector.

    2. Turn the engine switch on (IG).

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      C80-1 - Body ground Engine switch on (IG) 11 to 14 V

    4. Reconnect the vacuum switching valve sub-assembly (for engine mounting) connector.


    NG

    CHECK HARNESS AND CONNECTOR (VACUUM SWITCHING VALVE ASSEMBLY SUB-ASSEMBLY (FOR ENGINE MOUNTING) - NO. 1 INTEGRATION RELAY) Click here

    OK

  5. CHECK HARNESS AND CONNECTOR (VACUUM SWITCHING VALVE SUB-ASSEMBLY (FOR ENGINE MOUNTING) - ECM)


    1. Disconnect the vacuum switching valve sub-assembly (for engine mounting) connector.

    2. Disconnect the ECM connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      C80-2 - C150-12 (ACM) Always Below 1 Ω
      C80-2 or C150-12 (ACM) - Body ground and other terminals Always 10 kΩ or higher

    4. Reconnect the ECM connector.

    5. Reconnect the vacuum switching valve sub-assembly (for engine mounting) connector.


    OK

    REPLACE ECM Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR (VACUUM SWITCHING VALVE SUB-ASSEMBLY(FOR ENGINE MOUNTING) - ECM)

  6. CHECK HARNESS AND CONNECTOR (VACUUM SWITCHING VALVE ASSEMBLY SUB-ASSEMBLY (FOR ENGINE MOUNTING) - NO. 1 INTEGRATION RELAY)


    1. Remove the No. 1 integration relay from the engine room relay block.

    2. Disconnect the vacuum switching valve sub-assembly (for engine mounting) connector.

    3. Measure the resistance of the wire harness side connectors.

      Standard Resistance
      Tester Connection Condition Specified Condition
      1K-22 - C80-1 Always Below 1 Ω
      K-22 or C80-1 - Body ground and other terminals Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  7. INSPECT NO. 1 INTEGRATION RELAY (EFI MAIN2)


    1. Inspect the No. 1 Integration relay (EFI MAIN2) Click here.


    OK

    INSPECT ECM POWER SOURCE CIRCUIT Click here

    NG

    REPLACE NO. 1 INTEGRATION RELAY