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International Automotive Technicians Network
Re: Stalling, cuts out, P0688 Auto Shutdown Sense Circuit Low
Posted to Technical Discussion Forum on 1/4/2019

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The truck doesn't have an ASD relay. It has a TIPM with internal circuitry. TIPM failures are common but given that the ASD voltage doesn't drop out when the truck stalls I can't blame the TIPM.

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