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Coolant Temp on LS1 Car

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Old May 11, 2007 | 02:59 AM
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Default Coolant Temp on LS1 Car

What wire on a LS1 F Car does the Colant Temp Guage get it's signal from? I have it traced in the Harness from the Sensor, but which wire actually sends the Signal to the Guage..how is the Guage wired?
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Old May 11, 2007 | 10:37 AM
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Depends on what year of pcm/harness you are running? 97/98 has a wire going from the sensor to the cluster. 99+up routes the signal from the sensor to the pcm and the pcm sends the info on the serial data line to the cluster.
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Old May 11, 2007 | 04:52 PM
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Is the Serial Data Line the Green one that goes to the Diagnostic port as well, cause that is the only one there is..
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Old May 11, 2007 | 05:24 PM
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Nope, on the 98/99+up Fcar, in vehicle datalink connectors, it is the purple wire, pin 2.
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