5. FUEL INJECTION SYSTEM MXU 500EXi/MXU500i WTS SENSOR (Water Temperature Sensor) REMOVAL / INSTALLATION Drain the coolant from the cooling system. Disconnect the WTS sensor connector from the sensor. Remove the WTS sensor and O-ring. Install a new O-ring and WTS sensor. Always replace an O-ring with a new one. Tighten the WTS sensor to the specified torque. Torque: 1.2 kgf-m (12 N-m, 8.6 lbf-ft) Connect the WTS sensor connector. Fill the cooling system with the recommended coolant. O-ring INSPECTION Measure the resistance at the WTS sensor terminals. STANDARD C -20 40 100 K 28.6 1.46 0.176 Standard: 3.5110% K (at 20°C/68°F) 5-24