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8-256 ELECTRICAL-BODY AND CHASSIS Thermo Unit Inspection The thermo unit is thermistor type and must be inspected variable resistor, switch the thermo unit off and then measure the resistance of the resistor through the bridge. Confirm that the resistance is continuously variable in any other points than those shown in the following table. 2. Dip the thermo unit into 80 - 90 °C (176 - 194°F) water and confirm that there is no bubble continuously coming out of inside of the unit. Replace the unit when the result of inspection is found abnormal. Temperature Check condition 50 °C (122 °F) 115 °C (239 °F) 7V 55 Ω Gauge Resistance +33.6 226.0 -36.6 +1.71 26.4 -2.21 7V 25 Ω Gauge value ( Ω) - +2.68 24.3 -3.68 |