Dtc P0200/97 Injector Circuit / Open


DESCRIPTION

MONITOR DESCRIPTION

MONITOR STRATEGY

TYPICAL ENABLING CONDITIONS

TYPICAL MALFUNCTION THRESHOLDS

WIRING DIAGRAM

INSPECTION PROCEDURE

INSPECT INJECTOR ASSEMBLY

CHECK WIRE HARNESS (INJECTOR - EDU)

CHECK WIRE HARNESS (EDU - ECM)

CHECK INJECTOR DRIVER (BATTERY VOLTAGE)

CHECK ECM (INJECTOR VOLTAGE)

REPLACE INJECTOR DRIVER

DTC P0200/97 Injector Circuit / Open


DESCRIPTION

HINT:
  1. For more information on the EDU, refer to the system description (Toyota Fortuner RM0000012WW005X.html).
  2. If P0200/97 is present, refer to the "Diagnostic Trouble Code (DTC) Table for Common Rail System" (Toyota Fortuner RM0000012WD005X.html).
The EDU drives the injectors at high speeds. The EDU delivers high-speed driving under high pressure fuel conditions using the DC/DC converter that provides a high-voltage and quick-charging system.
After the EDU receives an injection command (IJT) signal from the ECM, the EDU responds to the command with an injector injection confirmation (IJF) signal when the current is applied to the injector.

Toyota Fortuner. Ggn50, 60 Kun51, 61 Tgn51 Lan50.1Kd-Ftv Engine Control System.Ecd System. Dtc P0200/97 Injector Circuit / Open


DTC No.
DTC Detection Condition
Trouble Area
P0200/97
Open or short in EDU or injector circuit
After engine is started, there is no IJF signal from EDU to ECM, despite ECM sending IJT signal to EDU
(1 trip detection logic)
  1. Open or short in EDU circuit
  2. Injector
  3. EDU
  4. ECM

MONITOR DESCRIPTION

P0200/97 (Open or short in EDU or injector circuit):
  1. The ECM continuously monitors both injection command (IJT) signals and injection confirmation (IJF) signals. This DTC will be set if the ECM judges that the number of IJT signals and IJF signals are inconsistent.
The injectors are grounded over a Field Effect Transistor (FET) and a serial resistor. This resistor creates a voltage drop, which is monitored by the EDU (injector drive circuit), in relation to the current drawn by the injector. When the injector current becomes too high, the voltage drop over the resistor exceeds a specified level and no IJF signal for that cylinder is sent to the ECM.
P0200/97 refers to a malfunction in the EDU or injector circuit.
If this DTC is set, the ECM enters fail-safe mode and limits the engine power. The fail-safe mode continues until the ignition switch is turned OFF.

Toyota Fortuner. Ggn50, 60 Kun51, 61 Tgn51 Lan50.1Kd-Ftv Engine Control System.Ecd System. Dtc P0200/97 Injector Circuit / Open


MONITOR STRATEGY


Required sensors
IJF signal from EDU
Frequency of operation
Continuous
Duration
10 seconds
MIL operation
1 driving cycle

TYPICAL ENABLING CONDITIONS


Item
Specification
Minimum
Specification
Maximum
Engine speed
500 rpm
-
Battery voltage
11 V
-
Ignition switch
ON
ON

TYPICAL MALFUNCTION THRESHOLDS


Threshold
The injection missing counter* for all the cylinders, or for one individual cylinder, reaches a specified number (taking approximately 1 second from starting the engine)
*: Increments when no IJF signal is received from the EDU despite the ECM sending IJT signals

WIRING DIAGRAM


Toyota Fortuner. Ggn50, 60 Kun51, 61 Tgn51 Lan50.1Kd-Ftv Engine Control System.Ecd System. Dtc P0200/97 Injector Circuit / Open


INSPECTION PROCEDURE

HINT:
Read freeze frame data using the intelligent tester. Freeze frame data records the engine conditions when a malfunction is detected. When troubleshooting, freeze frame data can help determine if the vehicle was running or stopped, if the engine was warmed up or not, and other data from the time the malfunction occurred.
NOTICE:
If the ECM is replaced, the new ECM needs initialization (Toyota Fortuner RM0000012X2005X.html).
1.INSPECT INJECTOR ASSEMBLY
Toyota Fortuner. Ggn50, 60 Kun51, 61 Tgn51 Lan50.1Kd-Ftv Engine Control System.Ecd System. Dtc P0200/97 Injector Circuit / Open

  1. Disconnect the F5, F6, F7 and F8 injector connectors.

  1. Measure the resistance of the injector.

    Standard resistance:
    Tester Connection
    		Specified Condition
    1 - 2
    		0.85 to 1.05 Ω at 20°C (68°F)


NG
REPLACE INJECTOR ASSEMBLY
OK


2.CHECK WIRE HARNESS (INJECTOR - EDU)
Toyota Fortuner. Ggn50, 60 Kun51, 61 Tgn51 Lan50.1Kd-Ftv Engine Control System.Ecd System. Dtc P0200/97 Injector Circuit / Open

  1. Check the wire harness between the injector and EDU (INJ terminal).

    1. Disconnect the F4, F5, F6 and F7 connectors.

    2. Disconnect the I5 EDU connector.

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

      Standard resistance:
      Tester Connection
      		Specified Condition
      F4-2 - I5-4 (INJ1)
      		Below 1 Ω
      F5-2 - I5-2 (INJ2)
      		Below 1 Ω
      F6-2 - I5-1 (INJ3)
      		Below 1 Ω
      F7-2 - I5-3 (INJ4)
      		Below 1 Ω
      F4-1 - I5-5 (COM1)
      		Below 1 Ω
      F5-1 - I5-6 (COM2)
      		Below 1 Ω
      F6-1 - I5-6 (COM2)
      		Below 1 Ω
      F7-1 - I5-5 (COM1)
      		Below 1 Ω
      F4-2 or I5-4 (INJ1) - Body ground
      		10 kΩ or higher
      F5-2 or I5-2 (INJ2) - Body ground
      		10 kΩ or higher
      F6-2 or I5-1 (INJ3) - Body ground
      		10 kΩ or higher
      F7-2 or I5-3 (INJ4) - Body ground
      		10 kΩ or higher
      F4-1 or I5-5 (COM1) - Body ground
      		10 kΩ or higher
      F5-1 or I5-6 (COM2) - Body ground
      		10 kΩ or higher
      F6-1 or I5-6 (COM2) - Body ground
      		10 kΩ or higher
      F7-1 or I5-5 (COM1) - Body ground
      		10 kΩ or higher


NG
REPAIR OR REPLACE HARNESS AND CONNECTOR
OK


3.CHECK WIRE HARNESS (EDU - ECM)
Toyota Fortuner. Ggn50, 60 Kun51, 61 Tgn51 Lan50.1Kd-Ftv Engine Control System.Ecd System. Dtc P0200/97 Injector Circuit / Open

  1. Disconnect the I6 EDU connector.

  1. Disconnect the E7 ECM connector.

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

    Standard resistance:
    Tester Connection
    		Specified Condition
    I6-6 (#10) - E7-24 (#1)
    		Below 1 Ω
    I6-3 (#20) - E7-23 (#2)
    		Below 1 Ω
    I6-2 (#30) - E7-22 (#3)
    		Below 1 Ω
    I6-5 (#40) - E7-21 (#4)
    		Below 1 Ω
    I6-7 (INJF) - E7-25 (INJF)
    		Below 1 Ω
    I6-6 (#10) or E7-24 (#1) - Body ground
    		10 kΩ or higher
    I6-3 (#20) or E7-23 (#2) - Body ground
    		10 kΩ or higher
    I6-2 (#30) or E7-22 (#3) - Body ground
    		10 kΩ or higher
    I6-5 (#40) or E7-21 (#4) - Body ground
    		10 kΩ or higher
    I6-7 (IJf) or E7-25 (INJF) - Body ground
    		10 kΩ or higher


NG
REPAIR OR REPLACE HARNESS AND CONNECTOR
OK


4.CHECK INJECTOR DRIVER (BATTERY VOLTAGE)
Toyota Fortuner. Ggn50, 60 Kun51, 61 Tgn51 Lan50.1Kd-Ftv Engine Control System.Ecd System. Dtc P0200/97 Injector Circuit / Open

  1. Disconnect the I5 and I6 EDU connectors.

  1. Turn the ignition switch ON.

  1. Measure the voltage of the wire harness side connectors.

    Standard voltage:
    Tester Connection
    		Specified Condition
    I5-8 (BATTERY) - I6-1 (GND)
    		9 to 14 V


NG
CHECK INJECTOR DRIVER POWER SOURCE CIRCUIT (BATTERY - EDU)
OK


5.CHECK ECM (INJECTOR VOLTAGE)
Toyota Fortuner. Ggn50, 60 Kun51, 61 Tgn51 Lan50.1Kd-Ftv Engine Control System.Ecd System. Dtc P0200/97 Injector Circuit / Open

  1. While idling the engine, check the waveform of the ECM connectors using an oscilloscope.

    OK:
    Tester Connection
    		Specified Condition
    E7-24 (#1) - E6-7 (E1)
    		Correct waveform is as shown
    E7-23 (#2) - E6-7 (E1)
    		Correct waveform is as shown
    E7-22 (#3) - E6-7 (E1)
    		Correct waveform is as shown
    E7-21 (#4) - E6-7 (E1)
    		Correct waveform is as shown
    E7-25 (INJF) - E6-7 (E1)
    		Correct waveform is as shown
    Tool Setting
    		Condition
    (a) 5 V/DIV., 20 msec./DIV.
    		Idling with warm engine
    (b) 2 V/DIV., 20 msec./DIV.
    HINT:
    The waveform varies depending on the injector injection.


NG
REPLACE ECM
OK


6.REPLACE INJECTOR DRIVER

NEXT

CHECK IF DTC OUTPUT RECURS (DTC P0200/97)