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Home >> Jeep >> 1995 >> Wrangler Sahara, Automatic, 31RH >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Controls - Basic Testing - 4.0L >> Computerized Engine Controls >> Input Devices >> Automatic Shutdown (ASD) Relay Input Signal
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Automatic Shutdown (ASD) Relay Input Signal

A 12-volt signal to PCM indicates that ASD has been activated. ASD relay is located in Power Distribution Center (PDC). ASD relay is battery voltage source for HO2S heating element, ignition coil, generator field winding and fuel injectors. If PCM does not see a 12-volt signal when ASD relay should be activated, a Diagnostic Trouble Code (DTC) No. 42 AUTO SHUTDOWN RELAY CONTROL CIRCUIT will be set.

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