Ecd System Precaution

  1. IGNITION SWITCH EXPRESSION

  1. INITIALIZATION AND REGISTRATION

  1. INJECTOR COMPENSATION CODE

  1. PILOT QUANTITY LEARNING

  1. ENGINE DIFFICULT TO START, ENGINE STALLING, BLACK SMOKE EMITTED, ROUGH IDLING, EXCESSIVE ENGINE VIBRATION, ENGINE KNOCKING, LACK OF POWER OR HESITATION

  1. WHEN USING INTELLIGENT TESTER

Ecd System -- Precaution



1.IGNITION SWITCH EXPRESSION

  1. The type of ignition switch used on this model differs depending on the specifications of the vehicle. The expressions listed in the table below are used in this section.

    Expression
    		Ignition Switch (Position)
    		Engine Switch (Condition)
    Ignition Switch off
    		LOCK
    		Off (Lock)
    Ignition Switch ACC
    		ACC
    		On (ACC)
    Ignition Switch ON
    		ON
    		On (IG)
    Engine Start
    		START
    		On (Start)

2.INITIALIZATION AND REGISTRATION
NOTICE:
When replacing the ECM and/or any other components in the following chart, perform the corresponding utility items.

HINT:
When the ECM and one or more other components are replaced at the same time, perform the following utility items by following the instructions shown on the tester display, starting with the ECM.

Replacement Part
Utility Item
ECM
  1. Learning Values Save (LandCruiser RM0000012XK0ARX_02_0007.html)
  2. Learning Values Write (LandCruiser RM0000012XK0ARX_02_0008.html)
  3. VIN Registration (LandCruiser RM0000012XK0ARX.html)
Engine assembly
  1. Clear Crank Time Compensation Data (LandCruiser RM000000TIN08CX.html)
  2. Input Injector Compensation Code (LandCruiser RM0000012XK0ARX_02_0003.html)
  3. Pilot Quantity Learning (LandCruiser RM0000012XK0ARX_02_0009.html)
Crankshaft position sensor plate
Clear Crank Time Compensation Data (LandCruiser RM000000TIN08CX.html)
Fuel supply pump assembly
Supply Pump Initialization (LandCruiser RM000000TIN08CX.html)
Injector assembly
  1. Input Injector Compensation Code (LandCruiser RM0000012XK0ARX_02_0003.html)
  2. Pilot Quantity Learning (LandCruiser RM0000012XK0ARX_02_0009.html)
Automatic transmission assembly, engine assembly or ECM
Automatic Transmission Initialization (LandCruiser RM000000W7F0QUX.html)
HINT:
When the ECM must be replaced, before replacing the ECM, perform the "Learning Values Save" function using the intelligent tester. Then after installing the new ECM, perform all of the initializations/registrations for the "Learning Values Write" function by following the instructions shown on the tester display.

3.INJECTOR COMPENSATION CODE
HINT:
  1. Each injector assembly has different fuel injection characteristics. In order to optimize fuel injection performance, the ECM compensates for these differences by adjusting the fuel injection duration of each injector assembly according to its compensation code. Injector compensation codes are unique, 30-digit, alphanumeric values printed on the head portion of each injector assembly.
  2. If an incorrect injector compensation code is input into the ECM, the engine may rattle or engine idling may become rough. In addition, engine failure may occur and the life of the engine may be shortened.


    Land Cruiser, Land Cruiser Prado. Grj150 Trj150,155 Kdj150,155 Lj150, Gdj150,155.1Kd-Ftv Engine Control.Ecd System.Ecd System Precaution

  1. When an injector assembly is replaced, the injector compensation code must be input into the ECM (LandCruiser RM0000012XK0ARX_02_0003.html).

  2. When the ECM is replaced, all of the existing injector compensation codes must be input into the new ECM (LandCruiser RM0000012XK0ARX_02_0003.html).


4.PILOT QUANTITY LEARNING
HINT:
  1. By performing "Pilot Quantity Learning", the injection volume for each cylinder is precisely adjusted so that the engine runs smoothly. The "Pilot Quantity Learning" information is stored in the EEPROM of the ECM.
  2. If an incorrect pilot quantity learning value is input into the ECM, the engine may rattle or engine idling may become rough.

  1. When an injector assembly is replaced, the injector compensation code must be input to the ECM, and then pilot quantity learning must be performed (LandCruiser RM0000012XK0ARX_02_0009.html).

  2. When the ECM is replaced, all of the existing injector pilot quantity learning values must be input into the new ECM (LandCruiser RM0000012XK0ARX_02_0009.html).


5.ENGINE DIFFICULT TO START, ENGINE STALLING, BLACK SMOKE EMITTED, ROUGH IDLING, EXCESSIVE ENGINE VIBRATION, ENGINE KNOCKING, LACK OF POWER OR HESITATION

  1. Check if the customer problem is described below. If so, refer to the appropriate troubleshooting section.

    1. Engine is difficult to start or stalling.

    2. Black smoke is emitted.

    3. There is rough idling or excessive engine vibrations.

    4. There is engine knocking or rattling.

    5. There is a lack of power or hesitation.


6.WHEN USING INTELLIGENT TESTER
CAUTION:
  1. Observe the following items for safety reasons:
    1. Read the tester's instruction books before using the tester.
    2. Make sure that the tester cable is not caught on the pedals, shift lever or steering wheel when driving with the tester connected to the vehicle.
    3. When driving the vehicle for testing purposes using the tester, two persons are required. One drives the vehicle and the other operates the tester.