2004 Scion xA AutomaticFACTORY OEM SERVICE PROCEDURE

Check Mode Procedure

NOTE: Hand-held tester only:

Compared to the normal mode, the check mode has more sensing ability to detect malfunctions. Furthermore, the same diagnostic items which are detected in the normal mode can also be detected in the check mode.

  1. CHECK MODE PROCEDURE (Using the hand-held tester) 
    1. Check the initial conditions.
      1. Battery positive voltage 11 V or more
      2. Throttle valve fully closed
      3. Transmission in the P or N position
      4. A/C switched OFF
    2. Turn the ignition switch OFF.
    3. Connect the hand-held tester to the DLC3.
      4. Fig 1: Connecting Hand-Held Tester To DLC3
      G03366980Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    4. Turn the ignition switch ON.
    5. Switch the hand-held tester from the normal mode to the check mode (check that the MIL flashes).
      NOTE: If the hand-held tester switches the ECM from the normal mode to the check mode or vice-versa, or if the ignition switch is turned from ON to ACC or OFF during the check mode, the DTC and freeze frame data will be erased.
    6. Start the engine (MIL goes off after the engine starts).
    7. Simulate the conditions of the malfunction described by the customer.
      Fig 2: Malfunction Code Blinking Pattern
      G03366981Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Factory Service Tools

Use the Manual With the Right Hardware

Pair factory procedures with proven DIY tools so the instructions are easier to execute.

Disclosure: Verified tool recommendations may earn an affiliate commission at no cost to you.

Shop Manual-Ready ToolsCompare Repair QuoteQuote Shield Pro

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.

Rather have a pro handle this?

A certified mobile mechanic comes to your home or office. They bring the tools, you stay comfortable. No tow truck, no waiting room, no surprises.

Comes to youSame-day available12-month warranty
Get a Free Quote

No obligation. See pricing before you book.