Ecd System (W/O Dpf) - Active Control Engine Mount System

Land Cruiser URJ200 URJ202 GRJ200 VDJ200 - 1VD-FTV ENGINE CONTROL

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

PERFORM ACTIVE TEST USING INTELLIGENT TESTER

CHECK VACUUM

INSPECT VSV FOR ENGINE MOUNT

CHECK HARNESS AND CONNECTOR (VSV FOR ENGINE MOUNT - ECM, EFI NO. 2 FUSE - VSV FOR ENGINE MOUNT)

INSPECT ENGINE MOUNTING INSULATOR FRONT

ECD SYSTEM (w/o DPF) - Active Control Engine Mount System

DESCRIPTION

The Active Control Engine Mount (ACM) system decreases engine vibration at low engine speed using the VSV for engine mount. The VSV is controlled by a pulse signal transmitted to the VSV from the ECM. The frequency of this pulse signal is matched to the engine speed to decrease engine vibration.


WIRING DIAGRAM

Ecd System (W/O Dpf) - Active Control Engine Mount System. 1VD-FTV ENGINE CONTROL. Land Cruiser URJ200 URJ202 GRJ200 VDJ200

INSPECTION PROCEDURE

  • NOTICE:
  • After replacing the ECM, the new ECM needs registration () and initialization ().
1.PERFORM ACTIVE TEST USING INTELLIGENT TESTER

Warm up the engine.

Connect the intelligent tester to the DLC3.

Move the shift lever to N or P.

Enter the following menus: Powertrain / Engine / Active Test / Control the ACM Inhibit.

Hold the top part of the steering wheel, and turn the Active Test from OFF to ON. Check the engine vibration.

  • Result:
  • Engine VibrationProceed to
    IncreasesA
    Does not increaseB
A
CHECK FOR INTERMITTENT PROBLEMS ()
B
2.CHECK VACUUM

Check if the vacuum hose cap is missing, if the hose is damaged, and if the air and vacuum hoses have looseness, disconnection or blockage.

  • OK:
  • Vacuum hose cap is not missing and hoses are normal.
NG
REPLACE VACUUM HOSE
OK
3.INSPECT VSV FOR ENGINE MOUNT

Inspect the VSV for engine mount ().

NG
REPLACE VSV FOR ENGINE MOUNT ()
OK
4.CHECK HARNESS AND CONNECTOR (VSV FOR ENGINE MOUNT - ECM, EFI NO. 2 FUSE - VSV FOR ENGINE MOUNT)
Ecd System (W/O Dpf) - Active Control Engine Mount System. 1VD-FTV ENGINE CONTROL. Land Cruiser URJ200 URJ202 GRJ200 VDJ200

Disconnect the VSV for engine mount connector.

Disconnect the ECM connector.

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

  • Standard Resistance (Check for Open):
  • for LHD
    Tester ConnectionConditionSpecified Condition
    C81-2 - C45-45 (ACM)AlwaysBelow 1 Ω
  • for RHD
    Tester ConnectionConditionSpecified Condition
    C81-2 - C46-45 (ACM)AlwaysBelow 1 Ω
  • Standard Resistance (Check for Short):
  • for LHD
    Tester ConnectionConditionSpecified Condition
    C81-2 or C45-45 (ACM) - Body groundAlways10 kΩ or higher
  • for RHD
    Tester ConnectionConditionSpecified Condition
    C81-2 or C46-45 (ACM) - Body groundAlways10 kΩ or higher
Ecd System (W/O Dpf) - Active Control Engine Mount System. 1VD-FTV ENGINE CONTROL. Land Cruiser URJ200 URJ202 GRJ200 VDJ200

Remove the EFI NO. 2 fuse from the engine room relay block.

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

  • Standard Resistance:
  • Tester ConnectionConditionSpecified Condition
    EFI NO. 2 fuse (2) - C81-1AlwaysBelow 1 Ω
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK
5.INSPECT ENGINE MOUNTING INSULATOR FRONT

Inspect the engine mounting insulator front ().

NG
REPLACE ENGINE MOUNTING INSULATOR FRONT ()
OK
REPLACE ECM ()