7M-GTE E/G Only Water Temp. Switch No. 2 Water Temp. Switch No. 3 INSPECTION OF WATER TEMPERATURE SWITCH NO.2, NO.3 (7M-GTE E/G MODEL ONLY) INSPECT SWITCH CONTINUITY Inspect the switch continuity between each terminal at each water temperature. 7M-GTE E/G Only Water Temp. SW No. 2 ON 107°C (225°F) OFF 112°C (234°F) Water Temp. SW No. 3 95°C (203°F) ON OFF 100°C (212°F) If defective, replace the switch. COOLING UNIT (See page AC-8) ON-VEHICLE INSPECTION OF EXPANSION VALVE 1. CHECK QUANTITY OF REFRIGERANT GAS DURING REFRIGERATION CYCLE 2. INSTALL MANIFOLD GAUGE SET (See page AC-21) 3. RUN ENGINE Run the engine at 2,000 rpm for at least 5 minutes. 4. CHECK EXPANSION VALVE If the expansion valve is clogged, the low pressure reading will drop to 0 kg/cm² (0 psi, 0 kPa), otherwise it will not drop. REMOVAL OF COOLING UNIT 1. DISCONNECT NEGATIVE CABLE FROM BATTERY 2. DISCHARGE REFRIGERATION SYSTEM 3. REMOVE CHARCOAL CANISTER WITH BRACKET 4. DISCONNECT SUCTION TUBE FROM COOLING UNIT OUTLET FITTING 5. DISCONNECT LIQUID TUBE FROM COOLING UNIT INLET FITTING HINT: Cap the open fittings immediately to keep moisture out of the system.