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DTC P062ADiagnostic Instructions
DTC DescriptorDTC P062A 00: Fuel Pump Relay Control Circuit OpenDiagnostic Fault Information
Circuit/System DescriptionThe engine control module (ECM) provides ignition voltage to the coil side of the fuel pump relay whenever the engine is cranking or running. The ECM enables the fuel pump relay as long as the engine is cranking or running, and ignition system reference pulses are received. If no ignition system reference pulses are received, the ECM turns OFF the fuel pump. The fuel pump relay control circuit is equipped with a feedback circuit that is pulled up to voltage within the ECM. The ECM can determine if the control circuit is open, shorted to ground, or shorted to a voltage by monitoring the feedback voltage. Conditions for Running the DTC
Conditions for Setting the DTCThe ECM detects that the fuel pump relay control circuit temperature is too high for greater than 1 s. Action Taken When the DTC SetsDTC P062A is a Type A DTC. Conditions for Clearing the DTCDTC P062A is a Type A DTC. Reference InformationSchematic ReferenceConnector End View ReferenceElectrical Information ReferenceDTC Type ReferencePowertrain Diagnostic Trouble Code (DTC) Type Definitions Scan Tool ReferenceControl Module References for scan tool information Circuit/System Verification
Circuit/System Testing
If greater than the specified range, test the ground circuit for an open/high resistance If the test lamp is always ON, test the control circuit for a short to voltage. If the circuit tests normal, replace the K20 Engine Control Module. If the test lamp is always OFF, test the control circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the K20 Engine Control Module. Component TestingDynamic Test
If not within the specified range, replace the KR23A Fuel Pump Relay.
If not the specified value, replace the KR23A Fuel Pump Relay. If greater than the specified range, replace the KR23A Fuel Pump Relay. Repair InstructionsPerform the Diagnostic Repair Verification after completing the diagnostic procedure. Control Module References for ECM replacement, setup, and programming |
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