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HOMESERVICE MANUALSDODGE AND RAM1999DAKOTA SLT, 2D PICKUP, 3.9 X, 4WD, STANDARDREPAIR AND DIAGNOSIS (SINGLE PAGE)ENGINE PERFORMANCESYSTEMENGINE CONTROLS - BASIC ENGINE TESTING - GASOLINEFUEL SYSTEMFUEL PUMP AMPERAGE TEST
1999 Dodge and Ram Dakota SLT, 2D Pickup, 3.9 X, 4WD, Standard

Fuel Pump Amperage Test

1999 Dodge and Ram Dakota SLT, 2D Pickup, 3.9 X, 4WD, StandardSECTION Fuel Pump Amperage Test
NOTE: Perform FUEL PUMP AMPERAGE TEST in conjunction with FUEL PUMP CAPACITY TEST, FUEL PUMP PRESSURE TEST and FUEL PRESSURE LEAKDOWN TEST.
  1. Ensure fuel tank temperature is more than 50°F (10°C). Connect DRB Low Current Shunt (LCS) adapter into DRB-III scan tool SET 1 connector. See Fig 1. Connect DRB-III scan tool to Data Link Connector (DLC). Connect test lead cables into 10-amp (10A +) and common (-) connectors on LCS. Access MAIN MENU on scan tool. Press DVOM button.
    Fig 1: Identifying DRB-III Low Current Shunt (LCS) Adapter
    G00018714Courtesy of DAIMLERCHRYSLER CORP.
    2. NOTE: Changing scan tool from 2-amp to 10-amp scale must be done to avoid damage to scan tool or LCS adapter.
  2. Use left/right arrow keys to highlight CHANNEL 1 function on scan tool. Press ENTER 3 times. Use up/down arrow keys to high light RANGE on scan tool. Press ENTER to change from 2-amp scale to 10-amp scale. Remove Power Distribution Center (PDC) cover and remove fuel pump relay. Depending on make or model of vehicle, 3 different relays are used. Use the following procedure for appropriate relay:

    1. Type 1 Fuel Pump Relay

      Attach test leads from LCS adapter into PDC relay cavities No. 30 and 87. See Fig 2.

    2. Type 2 Fuel Pump Relay

      Attach test leads from LCS adapter into PDC relay cavities No. 30 and 87. See Fig 3.

    3. Type 3 Fuel Pump Relay

      Attach test leads from LCS adapter into PDC relay cavities No. 3 and 5. See Fig 4.
      Fig 2: Identifying Type 1 Fuel Pump Relay
      G96G29344Courtesy of FORD MOTOR CO.
RENDER: 1.0x

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.