i EXHAUST EMISSION CONTROLE.G.R. System Inspection (Cont'd) THERMAL VACUUM VALVE 1. Disconnect vacuum hose connecting T.V.Vt and EG.R. control valve. 2. Start engine. Make sure TV.V. is open/closed according to the coolant temperature. 3. If operation is questionable remove switches Before dismounting, drain out about 1 liter (14/8 US qt, 7/8 Imp qt) of engine coolant, 4. Apply vacuum to thermal vacuum valve and ensure that thermal vacuum valve opens above the specified temperature conducting vacuum passage. Do not let water enter thermal vacuum valve. Specied tamper-turn: Cloud Below ETCIIZTFI Open Abov- WEIR? sEcusA 5, Install T.V,V I Be sure to apply sealer to threads of the valve prior to installing new valve. M : Thermal vacuum valve Less than 22 N-m (2.2 kg-m, 16 ft-Ib)