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Home >> Toyota >> 1991 >> Corolla Base, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Tests W/Codes - 4-CYL >> Introduction >> Clearing Codes
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Clearing Codes

  1. After repairs are performed, clear ECU memory of all stored codes. To clear memory, turn ignition off. Remove STOP (15 amp) fuse from main fuse block below left side of instrument panel for approximately 30 seconds or more.
  2. Depending on ambient temperature, fuse may need to be removed for more than 30 seconds. Replace fuse and exit diagnostic mode. Codes can also be cleared by disconnecting vehicle battery. However, other memory functions (clock, radio, etc.) will need to be reset.
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