Dtc P1225 Spill Control Circuit


DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

INSPECT SPILL CONTROL VALVE

CHECK HARNESS AND CONNECTOR (ECM - SPILL CONTROL VALVE)

DTC P1225 Spill Control Circuit


DESCRIPTION

The ECM controls the fuel injection volume by operating the spill control valve. The spill control valve is mounted on the injection or supply pump assembly, and opens or closes the injection pressure releasing port with the solenoid valve in the spill control valve. During injection, the valve is closed (ON). The ECM decides the basic fuel injection volume by the engine speed and accelerator pedal opening angle, and calculates the final fuel injection angle to make the various corrections to the basic fuel injection volume. The ECM counts the NE signal to detect the angle from injection starts and operates the spill control valve from ON to OFF (the injection pressure releasing port is open) at the position that detects the final fuel injection angle.

Land Cruiser, Land Cruiser Prado. Grj150 Trj150,155 Kdj150,155 Lj150, Gdj150,155.5L-E Engine Control.Ecd System. Dtc P1225 Spill Control Circuit


DTC No.
DTC Detection Condition
Trouble Area
P1225
Open or short in spill control valve at 500 rpm or more.
  1. Open or short in spill control valve circuit
  2. Spill control valve (Injection or supply pump assembly)
  3. ECM

WIRING DIAGRAM


Land Cruiser, Land Cruiser Prado. Grj150 Trj150,155 Kdj150,155 Lj150, Gdj150,155.5L-E Engine Control.Ecd System. Dtc P1225 Spill Control Circuit


INSPECTION PROCEDURE

HINT:
Read freeze frame data using the GTS. Freeze frame data records the engine condition when malfunctions are detected. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, and other data from the time the malfunction occurred.
1.INSPECT SPILL CONTROL VALVE

  1. Inspect the spill control valve (LandCruiser RM00000473G005X.html).



NG
REPLACE INJECTION OR SUPPLY PUMP ASSEMBLY (LandCruiser RM0000010YN00KX.html)
OK


2.CHECK HARNESS AND CONNECTOR (ECM - SPILL CONTROL VALVE)

  1. Disconnect the spill control valve connector.

  1. Disconnect the ECM connector.

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

    Standard Resistance:

    Tester Connection
    		Condition
    		Specified Condition
    C106-2 - C161-2 (SPV+)
    		Always
    		Below 1 Ω
    C106-1 - C161-1 (SPV-)
    		Always
    		Below 1 Ω
    C106-2 or C161-2 (SPV+) - Body ground
    		Always
    		10 kΩ or higher
    C106-1 or C161-1 (SPV-) - Body ground
    		Always
    		10 kΩ or higher


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

REPLACE ECM (LandCruiser RM000000VW203FX.html)