2006 Scion tC AutomaticFACTORY OEM SERVICE PROCEDURE

Component Operating Range

COMPONENT OPERATING RANGE

Engine coolant temperature Varies with actual engine coolant temperature

HINT:

  • If DTC P0115, P0116, P0117, P0118 and P0125 are output simultaneously, ECT sensor circuit may be open or shorted. Perform the troubleshooting of DTC P0115, P0117 or P0118 first.
  • 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, if the air-fuel ratio was lean or rich, and other data from the time the malfunction occurred.
  1. CHECK OTHER DTC OUTPUT (IN ADDITION TO DTC P0116) 
    1. Connect the intelligent tester to the DLC3.
    2. Turn the ignition switch ON and turn the tester ON.
    3. Select the following menu items: DIAGNOSIS / ENHANCED OBD II / DTC INFO / CURRENT CODES.
    4. Read DTCs.

    Result 

    RESULT CHART

    Display (DTC Output) Proceed to
    P0116 A
    P0116 and other DTCs B

    B : GO TO RELEVANT DTC CHART 

    A : Go to next step 

  2. INSPECT THERMOSTAT 

    NG : REPLACE THERMOSTAT 

    OK : REPLACE ENGINE COOLANT TEMPERATURE SENSOR 

Factory Service Tools

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.