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Corolla (Carbureted) & Tercel Wagon

  1. Drain cooling system and remove TVSV. Cool TVSV to 45°F (7°C). Apply air pressure to port "J". See Fig 1. Air should escape from ports "M" and "L".
  2. Apply air pressure to port "K". Air should escape from port "N." Heat TVSV to 63-122°F (17-50°C). Apply air pressure to port "K". Air should escape from ports "N" and "L". Apply air pressure to port "J". Air should escape from port "M".
  3. Heat TVSV to 154°F (68°C). Apply air pressure to port "K". Air should escape from ports "M" and "L". Apply air pressure to port "J". Air should not escape from any ports. Replace assembly if defective.
Fig 1: Checking TVSV Operation
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