1994 Toyota Tercel BaseFACTORY OEM SERVICE PROCEDURE

Normal Mode

  1. Before retrieving trouble code(s), verify MIL on instrument panel comes on with ignition on and engine off. The MIL should go off when engine is started.
  2. If MIL does not come on with ignition on and engine off, see appropriate DIAGNOSTIC CIRCUIT CHECK  chart under TROUBLE CODE CHARTS.
  3. If MIL remains on, self-diagnostic system has detected a malfunction or abnormality. Ensure battery voltage is greater than 11 volts and charging system is okay. Warm engine to normal operating temperature.
  4. Apply parking brake. Shift the transmission/transaxle into Neutral (M/T) or Park (A/T). Turn A/C and all accessories off. Ensure throttle is in idle position.
  5. Turn ignition on with engine off. Install Jumper Wire (SST 09843-18020) between terminals TE1 and E1 in appropriate Data Link Connector (DLC). See Fig 1.
    NOTE: DLC No. 1 is used. See Fig 1.
  6. Count number of flashes from MIL on instrument panel. If system is operating properly (with no trouble codes), MIL will flash continuously and evenly. See Fig 2.
  7. If MIL will not flash, check TE1 and E1 wiring circuit. See appropriate DIAGNOSTIC CIRCUIT CHECK  chart under TROUBLE CODE CHARTS. See ECM LOCATION .
  8. If trouble code exists, digits of trouble code will be flashed at approximately 1/2-second intervals. A 1 1/2-second pause separates first and second digits of code. See Fig 2.
  9. If more than one trouble code is stored, a 2 1/2-second pause will occur before next trouble code is flashed. Once all trouble codes are displayed, a 4 1/2-second pause will occur then trouble code(s) will be repeated.
  10. Trouble codes are displayed in order of smallest to largest. After trouble codes are retrieved, remove jumper wire to exit Normal Mode. See NOTES ON TROUBLE CODES . For additional information on trouble codes, see TROUBLE CODE DIAGNOSTIC HINTS  table under SELF-DIAGNOSTIC SYSTEM and appropriate TROUBLE CODE IDENTIFICATION  table under TROUBLE CODE IDENTIFICATION.
NOTE: To repair failure causing trouble code, refer to proper trouble code chart under TROUBLE CODE CHARTS . Once repairs for trouble code are made, trouble code must be cleared from ECM memory. See CLEARING TROUBLE CODES .
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.

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