Dtc P13C1 Fuel Temperature Sensor Circuit Low #1

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

CHECK ANY OTHER DTCS OUTPUT

CHECK ECM (FUEL TEMPERATURE SENSOR VOLTAGE)

CHECK HARNESS AND CONNECTOR (INJECTOR ASSEMBLY - ECM)

REPLACE INJECTOR ASSEMBLY (RELEVANT CYLINDER)

BLEED AIR FROM FUEL SYSTEM

REPLACE ECM

REPAIR OR REPLACE HARNESS OR CONNECTOR

CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED

DESCRIPTION

HINT:

1. If DTC P13C1, P13C2, P13C6, P13C7, P13CB, P13CC, P13D1 and/or P13D2 is stored, the following symptoms may appear:
   
1. Misfire
   
2. Combustion noise
   
3. Black smoke
   
4. White smoke
   
5. Lack of power
   
2. When DTC P13C1, P13C2, P13C3, P13C6, P13C7, P13C8, P13CB, P13CC, P13CD, P13D1, P13D2 and/or P13D3 is stored, check the fuel temperature by entering the following menus: Powertrain / Engine / Data List / Fuel Temperature #1 to #4.
   
   

   Reference

   Temperature Displayed	Malfunction
   -40°C (-40°F)	Open circuit
   140°C (284°F) or higher	Short circuit

WIRING DIAGRAM

INSPECTION PROCEDURE

NOTICE:

After replacing the ECM, the new ECM needs registration (HILUX_TGN26 RM0000012XK05AX.html) and initialization (HILUX_TGN26 RM000000TIN058X.html).

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. Connect the GTS to the DLC3.
   

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

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

4. Read the DTCs
   
   

   Result

   Result	Proceed to
   "Fuel pressure sensor circuit DTC" and "Injector Internal EEPROM Malfunction circuit DTC" are output*1	A
   "Fuel pressure sensor circuit DTC" and "Fuel temperature sensor circuit" are output*2	B
   Only DTCs related to the fuel temperature sensor circuit are output*3	C

   HINT:

   1. *1: Fuel pressure sensor circuit DTC and Injector Internal EEPROM Malfunction circuit DTCs:
      Fuel pressure sensor circuit DTC: P13A1, P13A2, P13A3, P13A6, P13A7, P13A8, P13AB, P13AC, P13AD, P13B1, P13B2, P13B3.
      Injector Internal EEPROM Malfunction circuit: P168A, P168B, P168C, P168D.
      
   2. *2: Fuel pressure sensor circuit DTC:
      P13A1, P13A2, P13A3, P13A6, P13A7, P13A8, P13AB, P13AC, P13AD, P13B1, P13B2, P13B3.
      
   3. *3: Fuel temperature sensor circuit DTC:
      P13C1, P13C2, P13C3, P13C6, P13C7, P13C8, P13CB, P13CC, P13CD, P13D1, P13D2, P13D3.
      

1. Disconnect the fuel pressure sensor connector.
   

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

   Text in Illustration

   *a	Component with harness connected (ECM)

   Standard Voltage:

   Tester Connection	Switch Condition	Specified Condition
   C166-18 (VIJ1) - C166-6 (EIJ1)	Ignition switch ON	4.5 to 5.5 V
   C166-17 (VIJ2) - C166-5 (EIJ2)	Ignition switch ON	4.5 to 5.5 V
   C166-16 (VIJ3) - C166-4 (EIJ3)	Ignition switch ON	4.5 to 5.5 V
   C166-15 (VIJ4) - C166-3 (EIJ4)	Ignition switch ON	4.5 to 5.5 V

1. Disconnect the injector assembly connector.
   

2. Disconnect the ECM connector.
   

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

   Standard Resistance:

   
   

   Tester Connection	Condition	Specified Condition
   C159-2 (VIJ1) - C166-18 (VIJ1)	Always	Below 1 Ω
   C159-1 (EIJ1) - C166-6 (EIJ1)	Always	Below 1 Ω
   C160-2 (VIJ2) - C166-17 (VIJ2)	Always	Below 1 Ω
   C160-1 (EIJ2) - C166-5 (EIJ2)	Always	Below 1 Ω
   C161-2 (VIJ3) - C166-16 (VIJ3)	Always	Below 1 Ω
   C161-1 (EIJ3) - C166-4 (EIJ3)	Always	Below 1 Ω
   C162-2 (VIJ4) - C166-15 (VIJ4)	Always	Below 1 Ω
   C162-1 (EIJ4) - C166-3 (EIJ4)	Always	Below 1 Ω
   C159-2 (VIJ1) or C166-18 (VIJ1) - Body ground	Always	10 kΩ or higher
   C159-1 (EIJ1) or C166-6 (EIJ1) - Body ground	Always	10 kΩ or higher
   C160-2 (VIJ2) or C166-17 (VIJ2) - Body ground	Always	10 kΩ or higher
   C160-1 (EIJ2) or C166-5 (EIJ2) - Body ground	Always	10 kΩ or higher
   C161-2 (VIJ3) or C166-16 (VIJ3) - Body ground	Always	10 kΩ or higher
   C161-1 (EIJ3) or C166-4 (EIJ3) - Body ground	Always	10 kΩ or higher
   C162-2 (VIJ4) or C166-15 (VIJ4) - Body ground	Always	10 kΩ or higher
   C162-1 (EIJ4) or C166-3 (EIJ4) - Body ground	Always	10 kΩ or higher

4. Reconnect the injector assembly connector.
   

5. Reconnect the ECM connector.
   

1. Replace the injector assembly of the cylinder relevant to the DTC (HILUX_TGN26 RM0000044TN00FX.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.
   

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

1. Replace the ECM (HILUX_TGN26 RM0000013Z001IX.html).
   

1. Repair or replace the harness or connector.
   

1. Connect the GTS to the DLC3.
   

2. Clear the DTCs (HILUX_TGN26 RM000000PDK0X4X.html).
   

3. Turn the ignition switch off for 30 seconds or more.
   

4. Turn the ignition switch to ON for 8 seconds or more.
   

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

6. Confirm that the DTC is not output again.