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CONTROL SYSTEM - Engine Control Unit Inspection

F-127prose procedure

ENGINE CONTROL UNIT

Inspection

Engine Control Unit Inspection

  1. 1
    Lift up the floormat in front of the passenger's seat.
    Photo of vehicle interior floor area showing the protector cover under the passenger seat floormat, lifted/removed to access the ECU area.
    9MU0F2-207
  2. 2
    Remove the protector cover.
  3. 3
    Connect the Engine Signal Monitor between the engine control unit and the wiring harness using the Adapter as shown.
    Illustration showing the ECU connected via the Engine Signal Monitor adapter. Labels: 'ECU', 'USE CONNECTOR A', SST '49 9200 162' (Adapter), SST '49 G018 903'.
    05U0FX-199
  4. 4
    Place the SST (Sheet) on the SST.
    Engine Signal Monitor (49PIN) sheet/SST '49 G018 904' overlaid on the monitor face showing terminal layout.
    05U0FX-234
  5. 5
    Measure the voltage at each terminal. (Refer to pages F-128 to F-130.)
  6. 6
    If any engine control unit terminal voltage is incorrect, check the input or output device and related wiring. If they are normal, replace the engine control unit. (Refer to pages F-131 to F-133.)
    Never apply voltage to SST terminals A and B.
    Photo of the engine control unit installed under the passenger floor with the SST sheet/monitor in place.
    05U0FX-200
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See also

F-129CONTROL SYSTEM - Engine Control Unit Terminal Voltage Table (continued)F-130CONTROL SYSTEM - Engine Control Unit Terminal Voltage / Terminal locationF-131CONTROL SYSTEM - Check Point for Each TerminalF-132CONTROL SYSTEM - Check Point for Each Terminal (continued)F-133CONTROL SYSTEM - Check Point for Each Terminal (continued)

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