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    P0230 Transfer Pump Circuit Out Of Range

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    Mopar1973Man

    DTC P0230: TRANSFER PUMP CIRCUIT OUT OF RANGE

    1. Turn ignition off. Disconnect fuel transfer pump connector. Fuel transfer pump is located at driver's side of the engine, just above the starter. See Fig. 37 . Using ohmmeter, check resistance between the cylinder block and terminal No. 2 (Black/White wire) on the component side of fuel transfer pump connector. If resistance is more than 5 ohms, go to next step. If resistance is 5 ohms or less, replace fuel transfer pump. Perform TEST VER-2A.

    2. Using ohmmeter, check resistance between ground and terminal No. 2 (Black/White wire) on wiring harness side of fuel transfer pump connector. If resistance is less than 5 ohms, go to next step. If resistance is 5 ohms or more, repair open on Black/White wire between fuel transfer pump and ground connection. The ground connection is located on cylinder block, just below fuel transfer pump. Perform TEST VER-2A.

    3. Using ohmmeter, check resistance between the cylinder block and terminal No. 1 (Yellow/White wire) on the component side of fuel transfer pump connector. If resistance is more than 5 ohms, go to next step. If resistance is 5 ohms or less, replace fuel transfer pump. Perform TEST VER-2A.

    4. Ensure ignition is off and fuel transfer pump connector is still disconnected. Disconnect ECM connector. ECM is located on driver's side of the engine, just in front of fuel transfer pump and contains a 50-pin connector. Using ohmmeter, check resistance between terminal No. 1 (Yellow/White wire) on fuel transfer pump connector and terminal No. 15 (Yellow/White wire) on ECM connector. If resistance is less than 5 ohms, go to next step. If resistance is 5 ohms or more, repair open on Yellow/White wire between ECM and fuel transfer pump. Perform TEST VER-2A.

    5. Ensure fuel transfer pump connector and ECM connector are still disconnected. Using ohmmeter, check resistance between ground and terminal No. 1 (Yellow/White wire) on fuel transfer pump connector. If Yellow/White wire between ECM and fuel transfer pump. Perform TEST VER-2A.

    6. Ensure ignition is off. Reinstall fuel transfer pump connector and ECM connector. Using a 12-volt test light and Probe (6801), back probe terminal No. 1 (Yellow/White wire) on transfer pump connector. While observing test light operation, turn the ignition on with the engine off. If test light does not momentarily illuminate brightly, turn the ignition off and go to next step. If test light momentarily illuminates brightly, replace fuel transfer pump. Perform TEST VER-2A.

    7. Ensure ignition is off. Disconnect fuel transfer pumps connector. Using ohmmeter, check resistance between terminals No. 1 (Yellow/White wire) and No. 2 (Black/White wire) on the component side of fuel transfer pump connector. If resistance is 1.9-2.3 ohms, replace ECM. Perform TEST VER-2A. If resistance is not .9-1.3 ohms, replace fuel transfer pump. Perform TEST VER-2A.

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