Dtc P0201 Injector Circuit / Open - (Cylinder 1)

Engine Hybrid System. Hilux. Tgn26, 36 Kun25, 26, 35, 36 Ggn25
2Tr-Fbe Engine Control. Hilux. Tgn26, 36 Kun25, 26, 35, 36 Ggn25

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

CHECK FUEL INJECTOR ASSEMBLY (POWER SOURCE)

INSPECT FUEL INJECTOR ASSEMBLY

CHECK HARNESS AND CONNECTOR (FUEL INJECTOR ASSEMBLY - ECM)

CHECK HARNESS AND CONNECTOR (ECM - BODY GROUND)

DTC P0201 Injector Circuit / Open - (Cylinder 1)

DTC P0202 Injector Circuit / Open - (Cylinder 2)

DTC P0203 Injector Circuit / Open - (Cylinder 3)

DTC P0204 Injector Circuit / Open - (Cylinder 4)


DESCRIPTION

The fuel injector assemblies are located on the intake manifold assembly. They inject fuel into the cylinders based on the signals from the ECM.
Reference: Inspection Using Oscilloscope
With the engine idling, check the waveform between terminals #10 to #40 and E01 of the ECM connectors.
HINT:
The correct waveform is as shown in the diagram below.

Hilux. Tgn26, 36 Kun25, 26, 35, 36 Ggn25.2Tr-Fbe Engine Control.Sfi System. Dtc P0201 Injector Circuit / Open - (Cylinder 1)


DTC No.
DTC Detection Condition
Trouble Area
P0201
P0202
P0203
P0204
Current is not applied to the injector more than 10 times with the engine running.
(1 trip detection logic)
  1. Open or short in fuel injector circuit
  2. Fuel injector assembly
  3. ECM

WIRING DIAGRAM


Hilux. Tgn26, 36 Kun25, 26, 35, 36 Ggn25.2Tr-Fbe Engine Control.Sfi System. Dtc P0201 Injector Circuit / Open - (Cylinder 1)


INSPECTION PROCEDURE

HINT:
  1. If DTC P0201 is set, check the No. 1 injector circuit.
  2. If DTC P0202 is set, check the No. 2 injector circuit.
  3. If DTC P0203 is set, check the No. 3 injector circuit.
  4. If DTC P0204 is set, check the No. 4 injector circuit.
  5. Read freeze frame data using the intelligent tester. The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air fuel ratio was lean or rich, and other data from the time the malfunction occurred.
1.CHECK FUEL INJECTOR ASSEMBLY (POWER SOURCE)


    Hilux. Tgn26, 36 Kun25, 26, 35, 36 Ggn25.2Tr-Fbe Engine Control.Sfi System. Dtc P0201 Injector Circuit / Open - (Cylinder 1)

  1. Disconnect the fuel injector assembly connectors.

  1. Turn the ignition switch to ON.

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

    Standard Voltage:
    Tester Connection
    		Switch Condition
    		Specified Condition
    C65-1 - Body ground
    		Ignition switch ON
    		11 to 14 V
    C2-1 - Body ground
    		Ignition switch ON
    		11 to 14 V
    C66-1 - Body ground
    		Ignition switch ON
    		11 to 14 V
    C4-1 - Body ground
    		Ignition switch ON
    		11 to 14 V
    Text in Illustration
    *a
    		Front view of wire harness connector
    (to Fuel Injector Assembly)

  1. Reconnect the fuel injector assembly connectors.



NG
REPAIR OR REPLACE HARNESS OR CONNECTOR (INTEGRATION RELAY - FUEL INJECTOR ASSEMBLY)
OK


2.INSPECT FUEL INJECTOR ASSEMBLY

  1. Inspect the fuel injector assembly (HILUX_TGN26 RM000000YL901AX.html).



NG
REPLACE FUEL INJECTOR ASSEMBLY (HILUX_TGN26 RM000000YLB01KX.html)
OK


3.CHECK HARNESS AND CONNECTOR (FUEL INJECTOR ASSEMBLY - ECM)

  1. Disconnect the fuel injector assembly connectors.

  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
    C65-2 - C98-6 (#10)
    		Always
    		Below 1 Ω
    C2-2 - C98-7 (#20)
    		Always
    		Below 1 Ω
    C66-2 - C98-8 (#30)
    		Always
    		Below 1 Ω
    C4-2 - C98-9 (#40)
    		Always
    		Below 1 Ω
    Standard Resistance (Check for Short):
    Tester Connection
    		Condition
    		Specified Condition
    C65-2 or C98-6 (#10) - Body ground
    		Always
    		10 kΩ or higher
    C2-2 or C98-7 (#20) - Body ground
    		Always
    		10 kΩ or higher
    C66-2 or C98-8 (#30) - Body ground
    		Always
    		10 kΩ or higher
    C4-2 or C98-9 (#40) - Body ground
    		Always
    		10 kΩ or higher

  1. Reconnect the fuel injector assembly connectors.

  1. Reconnect the ECM connector.



NG
REPAIR OR REPLACE HARNESS OR CONNECTOR (FUEL INJECTOR ASSEMBLY - ECM)
OK


4.CHECK HARNESS AND CONNECTOR (ECM - BODY GROUND)

  1. Disconnect the ECM connectors.

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

    Standard Resistance (Check for Open):
    Tester Connection
    		Condition
    		Specified Condition
    C98-11 (E01) - Body ground
    		Always
    		Below 1 Ω
    C98-12 (E02) - Body ground
    		Always
    		Below 1 Ω

  1. Reconnect the ECM connectors.



NG
REPAIR OR REPLACE HARNESS OR CONNECTOR (ECM - BODY GROUND)
OK

REPLACE ECM (HILUX_TGN26 RM000000VW2024X.html)