2004 Scion xA AutomaticFACTORY OEM SERVICE PROCEDURE

Inspection Procedure

NOTE: Troubleshoot each trouble symptom in accordance with the chart below.
INSPECTION PROCEDURE

MIL Remains On Start Inspection From Step 1
MIL Is Not Illuminated Start Inspection From Step 3
  1. CLEAR DTC 
    1. Connect the hand-held tester or the OBD II scan tool to the DLC 3.
    2. Turn the ignition switch ON and push the hand-held tester or the OBD II scan tool main switch ON.
    3. Read the DTC (See DTC CHECK/CLEAR ).
    4. Clear the DTC (See DTC CHECK/CLEAR ).
    5. Check that MIL is not illuminated.

      Standard: MIL is not illuminated 

    1. OK : REPAIR CIRCUIT INDICATED BY OUTPUT CODE (See  DIAGNOSTIC TROUBLE CODE CHART  ) 
    2. NG : Go to next step. 
  2. CHECK HARNESS AND CONNECTOR (CHECK FOR SHORT IN WIRE HARNESS) 
    Fig 1: Checking Harness & Connector (Check For Short In Wire Harness)
    G03367252Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the E6 ECM connector.
    2. Turn the ignition switch ON.
    3. Check that MIL is not illuminated.

      Standard: MIL is not illuminated 

    4. Reconnect the ECM connector.
    1. OK : REPLACE ECM (See  REPLACEMENT  ) 
    2. NG : CHECK AND REPAIR HARNESS AND CONNECTOR (COMBINATION METER - ECM) 
  3. CHECK THAT MIL IS ILLUMINATED 
    1. Check that MIL is illuminated when turning the ignition switch ON.

      Standard: MIL is illuminated 

    1. OK : SYSTEM OK 
    2. NG : Go to next step. 
  4. INSPECT COMBINATION METER ASSY (MIL CIRCUIT) 
    1. See the HOW TO PROCEED WITH TROUBLESHOOTING .
    1. NG : REPAIR OR REPLACE BULB OR COMBINATION METER ASSEMBLY 
    2. OK : CHECK AND REPAIR HARNESS AND CONNECTOR (COMBINATION METER - ECM) 
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.