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HOMESERVICE MANUALSTOYOTA2004MATRIX XR, FWD, STANDARDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 617 (ENGINE CONTROL SYSTEM (SFI) (1MZ-FE-3MZ-FE) - DIAGNOSTICS)DTC P2118: THROTTLE ACTUATOR CONTROL MOTOR CURRENT RANGE/PERFORMANCEINSPECTION 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 Toyota Camry. However, it is still accessible from the selected car via links, so may be relevant.

HINT:

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, 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 FUSE (ETCS) 
    1. Remove the ETCS fuse from the engine room J/B.
    2. Check the resistance of the ETCS fuse.

      Standard: Below 1 Ω 

      Fig 1: Locating ETCS Fuse In Engine Room J/B
      G02900622Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. NG: REPLACE FUSE 
    2. OK: Go to next step 
  2. INSPECT ECM (+BM VOLTAGE) 
    1. Check the voltage of the ECM connectors.

      Standard: 

      TESTER CONNECTION SPECIFIED CONDITION

      Tester Connection Specified Condition
      E7-6 (+BM) - E8-1 (E1) 9 to 14 V
      Fig 2: Inspecting ECM (+BM Voltage)
      G02900623Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. OK: REPLACE ECM (See  ELECTRONIC CIRCUIT INSPECTION PROCEDURE  ). 
    2. NG: Go to next step 
  3. CHECK WIRE HARNESS (ECM - ETCS FUSE, ETCS FUSE - BATTERY) 
    1. Check the wire harness between the ETCS fuse and ECM.
      1. Remove the ETCS fuse from the engine room J/B.
      2. Disconnect the E7 ECM connector.
      3. Check the resistance of the wire harness side connectors.

      Standard: 

      TESTER CONNECTION SPECIFIED CONDITION

      Tester Connection Specified Condition
      J/B ETCS fuse terminal 2 - E7-6 (+BM) Below 1 Ω
      J/B ETCS fuse terminal 2 or E7-6 (+BM) - Body ground 10 kΩ or higher
    2. Check the wire harness between the ETCS fuse and the battery.
      1. Remove the ETCS fuse from the engine room J/B.
      2. Disconnect the battery positive cable.
      3. Check the resistance of the wire harness side connectors.

      Standard: 

      TESTER CONNECTION SPECIFIED CONDITION

      Tester Connection Specified Condition
      Battery positive cable - J/B ETCS fuse terminal 1 Below 1 Ω
      Battery positive cable or J/B ETCS fuse terminal 1 - Body ground 10 kΩ or higher
      Fig 3: Disconnecting Battery Positive Cable
      G02900624Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. NG: REPAIR OR REPLACE HARNESS AND CONNECTOR 
    2. OK: CHECK ENGINE ROOM JUNCTION BLOCK 
RENDER: 1.0x

NO RELATED

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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.