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6 Pin Connector with STO, Fuel Pump + SIG-RTN

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Old 01-29-2006, 04:57 PM
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6 Pin Connector with STO, Fuel Pump + SIG-RTN
What exactly are the Fuel Pump and the SIG-RTN plugs used for?
 
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Old 01-29-2006, 07:56 PM
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You can ground the fuel pump pin to force the fuel pumps to turn on. This aids in testing fuel pump problems. The SIG-RTN is the sensor ground circuit for the computer sensors. You jump the STI to the SIG-RTN to force the computer into the self diagnostic tests.
 
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