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Message: <blockquote data-quote="Mike10" data-source="post: 65320" data-attributes="member: 5461"><p><span style="font-family: 'TimesNewRomanPSMT'"><div style="text-align: left">From New Holland</div></span></p><div style="text-align: left"><span style="font-family: 'TimesNewRomanPSMT'">The grid heater control system is designed so that the grid heater will not function at temperatures above 29 °F (-1.5 °C). The temperature measured is the engine coolant not the air.</div></span></p><div style="text-align: left"><span style="font-family: 'TimesNewRomanPSMT'">The functioning of the grid heater is indicated by the cold start light on the instrument cluster</div><p>when the key is turned on. </span><strong><span style="font-family: 'Times New Roman'">The operator must pause between turning the key from the on </span></strong><span style="font-family: 'Times New Roman'"><strong>position to the start position and wait for the cold start light to turn off. </strong></span><span style="font-family: 'TimesNewRomanPSMT'">At temperatures</span></p><div style="text-align: left"><span style="font-family: 'TimesNewRomanPSMT'">above 29 °F, the cold start light comes on for one second and then goes off indicating the grid heater is not going to function. At temperature below 29 °F, the cold start light will come on for between 10 and 15 seconds depending on coolant temperature. The grid heater is on for the</div><p>same amount of time as the cold start light. </span><strong><span style="font-family: 'Times New Roman'">Once the cold start light turns off, the unit is</span></strong></p><p> <strong><span style="font-family: 'Times New Roman'"></span></strong><span style="font-family: 'Times New Roman'"><strong>ready to be started. </strong></span><span style="font-family: 'TimesNewRomanPSMT'">As soon as the key is turned to start, the grid heater comes on again for up</span></p><div style="text-align: left"><span style="font-family: 'TimesNewRomanPSMT'">to 15 seconds during cranking. The cold start light does not come on. After 15 seconds of cranking the grid heater will turn off. Once the unit is running, the grid heater will come on again for between one and two minutes, again depending on coolant temperature.</div><p><span style="font-family: 'TimesNewRomanPSMT'">If the cold start light does come on for at least 10 seconds, confirm that there is power at the grid heater. Place a voltmeter or test light on the power terminal of the grid heater during the time that the cold start light is on. There should be 12 volts at this terminal. If not, check the 300 amp fuse and the grid heater relay. Also, confirm that the grid heater supply cable is attached to the main power stud on the starter. There should be four cables attached to the starter. If everything checks out, replace the controller.</span></span></p><div style="text-align: left"><span style="font-family: 'TimesNewRomanPSMT'"><span style="font-family: 'TimesNewRomanPSMT'">Confirm that the grid heater does not have an open circuit. With the key off, measure the resistance between the grid heater power terminal and ground. The resistance should be almost 0 ohms.</div><p></span><div style="text-align: left"><span style="font-family: 'TimesNewRomanPSMT'"> If it is not, replace the grid heater.</span></div><p></span></p></blockquote><p></p>

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