Dtc P168A Injector #1 Internal Eeprom Malfunction

Engine Hybrid System. Hilux. Tgn26, 36 Kun25, 26, 35, 36 Ggn25
1Kd-Ftv Engine Control. Hilux. Tgn26, 36 Kun25, 26, 35, 36 Ggn25

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

CHECK FOR DTCS OUTPUT

REPLACE INJECTOR ASSEMBLY (RELEVANT CYLINDER)

BLEED AIR FROM FUEL SYSTEM

CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED

DTC P168A Injector #1 Internal EEPROM Malfunction

DTC P168B Injector #2 Internal EEPROM Malfunction

DTC P168C Injector #3 Internal EEPROM Malfunction

DTC P168D Injector #4 Internal EEPROM Malfunction


DESCRIPTION


P168A, P168B, P168C, P168D
DTC Detection Drive Pattern
DTC Detection Condition
Trouble Area
Ignition switch ON for 3 minutes or more
The EEPROM in the injector assembly is malfunctioning (EEPROM access (write or read) cannot be performed) for 3 seconds or more.
(1 trip detection logic)
  1. No. 1 injector assembly
  2. No. 2 injector assembly
  3. No. 3 injector assembly
  4. No. 4 injector assembly

WIRING DIAGRAM

Refer to DTC P0201 (HILUX_TGN26 RM00000187V063X_06.html).

INSPECTION PROCEDURE

HINT:
  1. 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.CHECK FOR DTCS OUTPUT

  1. Connect the GTS to the DLC3.

  1. Turn the ignition switch to ON and GTS on.

  1. Clear the DTCs (HILUX_TGN26 RM000000PDK12TX.html).

  1. Turn the ignition switch off and wait for 30 seconds or more.

  1. Turn the ignition switch to ON for 3 minutes or more.

  1. Enter the following menus: Powertrain / Engine / Trouble Codes.

  1. Read the DTCs.

    Result
    Result
    		Proceed to
    DTC P168A, P168B, P168C and/or P168D is output
    		A
    No DTC is output
    		B



B
CHECK FOR INTERMITTENT PROBLEMS (HILUX_TGN26 RM000000PDQ0YUX.html)
A


2.REPLACE INJECTOR ASSEMBLY (RELEVANT CYLINDER)

  1. Replace the injector assembly of the cylinder relevant to the DTC (HILUX_TGN26 RM0000044TN00PX.html).

    NOTICE:
    1. When replacing the injector assembly for a cylinder, always be sure to use a new injection pipe.
    2. Follow the procedure in the repair manual and temporarily install the injection pipes and nozzle leakage pipe, and then correctly position the injector assemblies. After that, tighten parts according to the torque specifications.
    3. If the installation procedure is not performed correctly, injector assemblies may become out of position, which may cause the injector assemblies to deteriorate, resulting in malfunctions.
    4. If an injector assembly deteriorates and malfunctions, other problems such as knocking, rough idle, etc. may occur.
    5. If an injector assembly becomes out of position, it is possible that the seal between the injector assembly and injection pipe may become incomplete, resulting in a fuel leak.

NEXT


3.BLEED AIR FROM FUEL SYSTEM

  1. Bleed the air from the fuel system (HILUX_TGN26 RM000002SY802GX_01_0002.html).


NEXT


4.CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED

  1. Connect the GTS to the DLC3.

  1. Turn the ignition switch to ON and turn the GTS on.

  1. Clear the DTC (HILUX_TGN26 RM000000PDK12TX.html).

  1. Turn the ignition switch off and wait for 30 seconds or more.

  1. Turn the ignition switch to ON for 3 minutes or more.

  1. Enter the following menus: Powertrain / Engine / Trouble Codes.

  1. Confirm that the DTC is not output again.


NEXT

END