SFI SYSTEM, Diagnostic DTC:P1160, P2119

DESCRIPTION

The electronic throttle control system is composed of the throttle actuator, throttle position sensor, accelerator pedal position sensor, and ECM. The ECM operates the throttle actuator to regulate the throttle valve in response to driver inputs. The throttle position sensor detects the opening angle of the throttle valve, and provides the ECM with feedback so that the throttle valve can be appropriately controlled by the ECM.

MONITOR DESCRIPTION

• P1160

  When the ECM cuts the power supply to the throttle actuator, the throttle valve returns to the fully-closed position by the spring. If the throttle valve does not return with ETCS relay off, the ECM judges throttle valve is stuck and then the ECM illuminates the MIL and stores the DTC.

• P2119

  The ECM determines the actual opening angle of the throttle valve from the throttle position sensor signal. The actual opening angle is compared to the target opening angle commanded by the ECM. If the difference between these two values is outside the standard range, the ECM interprets this as a malfunction in the electronic throttle control system. The ECM then illuminates the MIL and stores the DTC.

CONFIRMATION DRIVING PATTERN

1. Connect the GTS to the DLC3.

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

3. Clear DTCs (even if no DTCs are stored, perform the clear DTC operation) Click here.

4. Turn the ignition switch off and wait for at least 30 seconds.

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

6. Start the engine and warm it up until the engine coolant temperature reaches 75°C (167°F) or higher.

7. Depress the accelerator pedal fully and release the accelerator pedal.

8. Drive the vehicle at 10 km/h (6.25 mph) or more for 1 minute or more.

   CAUTION:

   When performing the confirmation driving pattern, obey all speed limits and traffic laws.

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

10. Read pending DTCs.

    Tech Tips

    
    

    • If a pending DTC is output, the system is malfunctioning.

    • If a pending DTC is not output, perform the following procedure.

11. Enter the following menus: Powertrain / Engine / Utility / All Readiness.

12. Input the DTC: P1160 or P2119.

13. Check the DTC judgment result.

    GTS Display	Description
    NORMAL	DTC judgment completed System normal
    ABNORMAL	DTC judgment completed System abnormal
    INCOMPLETE	DTC judgment not completed Perform driving pattern after confirming DTC enabling conditions
    N/A	Unable to perform DTC judgment Number of DTCs which do not fulfill DTC preconditions has reached ECU memory limit

    Tech Tips

    
    

    • If the judgment result shows NORMAL, the system is normal.

    • If the judgment result shows ABNORMAL, the system has a malfunction.

14. If the test result is INCOMPLETE or N/A and no DTC is output, perform a universal trip and check for permanent DTCs Click here.

    Tech Tips

    
    

    • If a permanent DTC is output, the system is malfunctioning.

    • If no permanent DTC is output, the system is normal.

FAIL-SAFE

When this DTC or other DTCs relating to Electronic Throttle Control System (ETCS) malfunctions are stored, the ECM enters fail-safe mode. During fail-safe mode, the ECM cuts the current to the throttle actuator, and the throttle valve is returned to a fully closed throttle angle by the return spring. The ECM then adjusts the engine output by controlling the fuel injection (intermittent fuel-cut) and ignition timing, in accordance with the accelerator pedal opening angle, to allow the vehicle to continue running at a minimal speed. If the accelerator pedal is depressed firmly and gently, the vehicle can be driven slowly.

Fail-safe mode continues until a pass condition is detected, and the ignition switch is then turned off.

WIRING DIAGRAM

Refer to DTC P2101 Click here.

CAUTION / NOTICE / HINT

PROCEDURE

1. CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC P1160 OR P2119)

   
   

   1. Connect the GTS to the DLC3.

   2. Turn the ignition switch to ON.

   3. Turn the GTS on.

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

   5. Read DTCs.

      Result

      Result	Proceed to
      DTC P1160 and/or P2119 is output	A
      DTC P1160 and/or P2119 and other DTCs are output	B

      Tech Tips

      If any DTCs other than P1160 and/or P2119 are output, troubleshoot those DTCs first.

   
   

   B

   GO TO DTC CHART Click here

   A

2. READ VALUE USING GTS (THROTTLE POSITION)

   
   

   1. Connect the GTS to the DLC3.

   2. Turn the ignition switch to ON.

   3. Turn the GTS on.

   4. Clear the DTCs Click here.

   5. Turn the ignition switch off and wait for at least 30 seconds.

   6. Turn the ignition switch to ON.

   7. Enter the following menus: Powertrain / Engine / Data List / Throttle Position No. 1 and Throttle Position Command.

   8. Read the values displayed on the GTS while fully depressing and releasing the accelerator pedal quickly.

      Result

      Result	Proceed to
      Throttle Position No. 1 does not change	A
      Throttle Position No. 1 changes even a little	B

      Tech Tips

      When a DTC is output, the system changes to fail-safe mode. Therefore, only use the data up until the time the DTC is stored for confirmation.

   
   

   B

   INSPECT THROTTLE WITH MOTOR BODY ASSEMBLY (VISUALLY CHECK THROTTLE VALVE) Click here

   A

3. INSPECT THROTTLE WITH MOTOR BODY ASSEMBLY (RESISTANCE OF THROTTLE ACTUATOR)

   
   

   1. Inspect the throttle with motor body assembly Click here.

   
   

   NG

   REPLACE THROTTLE WITH MOTOR BODY ASSEMBLY Click here

   OK

4. INSPECT THROTTLE WITH MOTOR BODY ASSEMBLY (VISUALLY CHECK THROTTLE VALVE)

   
   

   1. Check for contamination between the throttle valve and housing. If necessary, clean the throttle with motor body assembly. Also, check that the throttle valve moves smoothly.

      OK
      Throttle valve is not contaminated with foreign objects and moves smoothly.

   
   

   NG

   REPLACE THROTTLE WITH MOTOR BODY ASSEMBLY Click here

   OK

5. READ VALUE USING GTS (THROTTLE POSITION)

   
   

   1. Connect the GTS to the DLC3.

   2. Turn the ignition switch to ON.

   3. Turn the GTS on.

   4. Clear the DTCs Click here.

   5. Turn the ignition switch off and wait for at least 30 seconds.

   6. Turn the ignition switch to ON.

   7. Enter the following menus: Powertrain / Engine / Data List / Throttle Position No. 1, Throttle Position No. 2 and Throttle Position Command.

   8. Read the values displayed on the GTS while wiggling the ECM wire harness.

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

   10. Read DTCs.

       Result

       Result	Proceed to
       Value in Data List changes when wire harness is wiggled, or DTC is output	A
       Other than above	B

   
   

   B

   CHECK WHETHER DTC OUTPUT RECURS Click here

   A

6. REPAIR OR REPLACE HARNESS OR CONNECTOR (ECM - THROTTLE WITH MOTOR BODY ASSEMBLY)

   
   

   1. As the DTC was stored due to a change in the contact resistance of the connector, repair or replace the wire harness or connector.

   
   

   NEXT

   END

7. REPLACE THROTTLE WITH MOTOR BODY ASSEMBLY

   
   

   1. Replace the throttle with motor body assembly Click here.

   
   

   NEXT

8. CHECK WHETHER DTC OUTPUT RECURS

   
   

   1. Connect the GTS to the DLC3.

   2. Turn the ignition switch to ON.

   3. Turn the GTS on.

   4. Clear the DTCs Click here.

   5. Turn the ignition switch off and wait for at least 30 seconds.

   6. Turn the ignition switch to ON.

   7. Turn the GTS on.

   8. Drive the vehicle in accordance with the driving pattern described in Confirmation Driving Pattern.

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

   10. Read DTCs.

       Result

       Result	Proceed to
       DTC is not output	A
       DTC P1160 and/or P2119 is output	B

   
   

   A

   END

   B

   REPLACE ECM Click here