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 PERFORMANCETESTING & DIAGNOSISENGINE CONTROLS - TESTS W/CODESSELF-DIAGNOSTIC SYSTEMTROUBLE CODE DETECTION DRIVING PATTERN TESTS

1994 Toyota Tercel DX, 4D Sedan, Standard

Trouble Code Detection Driving Pattern Tests

1994 Toyota Tercel DX, 4D Sedan, StandardSECTION Trouble Code Detection Driving Pattern Tests

NOTE: Trouble code driving pattern test may be referred to as driving pattern test.

With certain trouble codes, once trouble code has been cleared from ECM memory, a trouble code detection driving pattern test can be performed to verify repairs and that trouble has not reset. Trouble code driving pattern test will duplicate conditions required to set specified trouble codes.
Trouble code detection driving pattern test lists procedure to be performed to ensure trouble code has not reset. See Fig 1.
Trouble code detection driving pattern tests apply only to specified trouble codes. See TROUBLE CODE DETECTION DRIVING PATTERN TEST APPLICATION table. Trouble code detection driving pattern test will be included with proper trouble code chart under TROUBLE CODE CHARTS .

TROUBLE CODE DETECTION DRIVING PATTERN TEST APPLICATION

Model

⁽¹⁾ Trouble Code

Tercel

21, 25, 26 & 71

⁽¹⁾	Trouble codes listed may not apply to all models, as some trouble codes are used only on Calif. models.

Fig 1: Typical Trouble Code Detection Driving Pattern Test

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

RENDER: 1.0x

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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.