Nitro 2WD V6-4.0L (2007)
Turn the ignition off.
Disconnect the C3 PCM harness connector.
CAUTION: Do not probe the PCM harness connectors. Probing the PCM harness connectors will damage the PCM terminals resulting in
poor terminal to pin connection. Install Miller Special Tool #8815 to perform diagnosis.
Measure the resistance of the (K31) Fuel Pump Control circuit from the C1 TIPM harness connector to the appropriate terminal of special tool #8815.
Is the resistance below 5.0 ohms?
Yes
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Go To 7
No
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Repair the open in the (K31) Fuel Pump Control circuit.
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Perform the POWERTRAIN VERIFICATION TEST. See: Computers and Control Systems/Testing and Inspection/Diagnostic Trouble Code
Tests and Associated Procedures/Verification Tests/Powertrain Verification Test
7. (K31) FUEL PUMP CONTROL CIRCUIT SHORTED TO GROUND