SFI SYSTEM(w/ Canister Pump Module), Diagnostic DTC:P268111, P268115

DTC Code DTC Name
P268111 Engine Coolant Bypass Valve Circuit Short to Ground
P268115 Engine Coolant Bypass Valve Circuit Short to Battery or Open

DESCRIPTION

The flow shutting valve (for heater control) used for the variable cooling system is a magnet type valve that is closed when the engine is warming up to prevent coolant from flowing through the heater passage which reduces engine warm up time.

DTC No. Detection Item DTC Detection Condition Trouble Area MIL Memory Note
P268111 Engine Coolant Bypass Valve Circuit Short to Ground

All of the following conditions are met (1 trip detection logic).


  • An open signal is being sent from the ECM to the flow shutting valve (for heater control).

  • Current operating state and target operating state differ for 3 seconds or more continuously.

  • Open or short in flow shutting valve (for heater control) (water by-pass hose assembly) circuit

  • Flow shutting valve (for heater control) (water by-pass hose assembly)

  • ECM

 Does not come on DTC stored SAE Code: P2682
P268115 Engine Coolant Bypass Valve Circuit Short to Battery or Open

All of the following conditions are met (1 trip detection logic).


  • A close signal is being sent from the ECM to the flow shutting valve (for heater control).

  • Current operating state and target operating state differ for 3 seconds or more continuously.

  • Open or short in flow shutting valve (for heater control) (water by-pass hose assembly) circuit

  • Flow shutting valve (for heater control) (water by-pass hose assembly)

  • ECM

 Does not come on DTC stored SAE Code: P2683
Related Data List
DTC No. Data List

P268111

P268115

 Coolant Temperature
Coolant Water Route Switching Valve

MONITOR DESCRIPTION

If the engine switch on (IG) or the engine is running and the current operating state and target operating state of the flow shutting valve (for heater control) do not match, the ECM determines that there is an open or short in the flow shutting valve (for heater control) circuit and stores a DTC.

CONFIRMATION DRIVING PATTERN

Tech Tips

Make sure to perform this procedure when the engine coolant temperature is between 5 and 40°C (41 and 104°F) and the difference between the engine coolant temperature and intake air temperature is within 10°C (18°F) or less.


  1. Connect the GTS to the DLC3.

  2. Turn the engine switch on (IG).

  3. Turn the GTS on.

  4. Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).

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

  6. Turn the engine switch on (IG) [A].

  7. Turn the GTS on.

  8. Enter the following menus: Powertrain / Engine / Active Test / Activate the Coolant Water Route Switching Valve [B].

  9. Perform the Active Test Activate the Coolant Water Route Switching Valve, select "Close" and wait for 3 seconds or more [C].

  10. Perform the Active Test Activate the Coolant Water Route Switching Valve, select "Open" and wait for 3 seconds or more [D].

  11. Enter the following menus: Powertrain / Engine / Trouble Codes [E].

  12. Read the 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.

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

  14. Input the DTC: P268111 or P268115.

  15. 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

    Tech Tips


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

    • If the judgment result is ABNORMAL, the system is malfunctioning.

    • If the judgment result is INCOMPLETE, perform steps [B] through [E] again.

WIRING DIAGRAM

B006ZL5E10

CAUTION / NOTICE / HINT

Note

Inspect the fuses for circuits related to this system before performing the following procedure.

Tech Tips

Read Freeze Frame Data using the GTS. 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.

PROCEDURE


  1. CHECK TERMINAL VOLTAGE (POWER SOURCE OF FLOW SHUTTING VALVE (FOR HEATER CONTROL))

    B006Y9YC02
    *a

    Front view of wire harness connector

    (to Flow Shutting Valve (for Heater Control) (Water By-pass Hose Assembly))

    1. Disconnect the flow shutting valve (for heater control) (water by-pass hose assembly) connector.

    2. Turn the engine switch on (IG).

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      C48-2 - Body ground Engine switch on (IG) 11 to 14 V
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR (EFI-MAIN NO. 1 RELAY - FLOW SHUTTING VALVE (FOR HEATER CONTROL))

    OK

  2. INSPECT FLOW SHUTTING VALVE (FOR HEATER CONTROL) (WATER BY-PASS HOSE ASSEMBLY)


    1. Inspect the flow shutting valve (for heater control) (water by-pass hose assembly).

      Click here

      Result
      Proceed to
      OK
      NG

    NG

    REPLACE FLOW SHUTTING VALVE (FOR HEATER CONTROL) (WATER BY-PASS HOSE ASSEMBLY) Click here

    OK

  3. CHECK HARNESS AND CONNECTOR (FLOW SHUTTING VALVE (FOR HEATER CONTROL) - ECM)


    1. Disconnect the flow shutting valve (for heater control) (water by-pass hose 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
      C48-1 - C57-42 (WSV1) Always Below 1 Ω
      C48-1 or C57-42 (WSV1) - Body ground and other terminals Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE ECM Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR