Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSTOYOTA1994TERCEL DX, 4D SEDAN, STANDARDREPAIR AND DIAGNOSIS (SINGLE PAGE)ENGINE PERFORMANCESYSTEMENGINE CONTROLS - TESTS W/CODESSELF-DIAGNOSTIC SYSTEMRETRIEVING TROUBLE CODESNORMAL MODE
1994 Toyota Tercel DX, 4D Sedan, Standard
Normal Mode
1994 Toyota Tercel DX, 4D Sedan, StandardSECTION Normal Mode
- 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.
- If MIL does not come on with ignition on and engine off, see appropriate DIAGNOSTIC CIRCUIT CHECK chart under TROUBLE CODE CHARTS.
- 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.
- 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.
- 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.
- 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.
- If MIL will not flash, check TE1 and E1 wiring circuit. See appropriate DIAGNOSTIC CIRCUIT CHECK chart under TROUBLE CODE CHARTS. See ECM LOCATION .
- 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.
- 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.
- 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 .
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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.