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Home >> Infiniti >> 1992 >> Q45 Base >> Repair and Diagnosis >> Engine Performance >> Theory and Operation >> Engine Controls - Theory & Operation >> Computerized Engine Controls >> Input Devices >> Park/Neutral Relay (Q45)
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Park/Neutral Relay (Q45)

ECU applies and monitors voltage to park/neutral relay on ECU terminal No. 44. When gear selector lever is in PARK or NEUTRAL position, relay is supplied voltage through selector switch. When relay is energized, contacts inside relay close, pulling voltage on ECU monitored circuit (terminal No. 44) low. This is interpreted by ECU as a park or neutral signal.