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HOMESERVICE MANUALSTOYOTA2004MATRIX XR, FWD, STANDARDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 726 (ENGINE CONTROL SYSTEM - DIAGNOSIS)DTC P0115: ENGINE COOLANT TEMPERATURE CIRCUIT, DTC P0117 ENGINE COOLANT TEMPERATURE CIRCUIT LOW INPUT, DTC P0118 ENGINE COOLANT TEMPERATURE CIRCUIT HIGH INPUTINSPECTION PROCEDURE
2004 Toyota Matrix XR, FWD, Standard

Inspection Procedure

2004 Toyota Matrix XR, FWD, StandardSECTION Inspection Procedure
WARNING: This page is about a different car, the 2004 Lexus ES 330. However, it is still accessible from the selected car via links, so may be relevant.

HINT:

  • If DTCs related to different system that have terminal E2 as the ground terminal are output simultaneously, terminal E2 may have an open circuit.
  • Read freeze frame data using the hand-held tester or the OBD II scan tool. Freeze frame data records the engine conditions when a malfunction is detected. When troubleshooting, it is useful for determining whether the vehicle was running or stopped, the engine was warmed up or not, the air-fuel ratio was lean or rich, etc. at the time of the malfunction.
  1. READ VALUE OF HAND-HELD TESTER OR OBD II SCAN TOOL (ENGINE COOLANT TEMPERATURE) 
    1. Connect the hand-held tester or the OBD II scan tool to the DLC3.
    2. Turn the ignition switch to ON and turn the hand-held tester or the OBD II scan tool ON.
    3. On the hand-held tester or the OBD II scan tool, select the item: DIAGNOSIS / ENHANCED OBD II / DATA LIST / ALL / COOLANT TEMP. Read the values.

      Temperature: 80°C to 97°C (176 to 207°F) after warming up. 

      Result: 

      Fig 1: Temperature Displayed Result Table
      G01437977Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    HINT:

    • If there is an open circuit, the hand-held tester or the OBD II scan tool indicates -40°C (-40°F).
    • If there is a short circuit, the hand-held tester or the OBD II scan tool indicates 140°C (284°F) or more.

    B: Go to step   2 

    C: CHECK FOR INTERMITTENT PROBLEMS (See  CHECK FOR INTERMITTENT PROBLEMS  ) 

    A: GO TO NEXT STEP. 

  2. READ VALUE OF HAND-HELD TESTER OR OBD II SCAN TOOL (CHECK FOR OPEN IN WIRE HARNESS) 
    1. Disconnect the E3 engine coolant temperature sensor connector.
    2. Connect terminals 1 and 2 of the engine coolant temperature sensor wire harness side connector.
    3. Turn the ignition switch to ON and turn the hand-held tester or the OBD II scan tool ON.
    4. On the hand-held tester or the OBD II scan tool, select the item: DIAGNOSIS / ENHANCED OBD II / DATA LIST / ALL / COOLANT TEMP. Read the values.

      Temperature: 140°C (284°F) or more 

    5. Reconnect the engine coolant temperature sensor connector.
      Fig 2: Disconnecting E3 Engine Coolant Temperature Sensor Connector
      G01437978Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
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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.