ZDX V6-3.7L (2010)
Fuel Pressure Release: Service and Repair
Fuel Pressure Relieving
Before disconnecting fuel lines or hoses, relieve pressure from the system by disabling the fuel pump and then disconnecting the fuel line/quick-connect
fitting in the engine compartment.
With the HDS
1. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
2. Connect the HDS to the data link connector (DLC) (A) located under the driver's side of the dashboard.
3. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
4. Make sure the HDS communicates with the PCM. If it doesn't, go to the DLC circuit troubleshooting See: Computers and Control
Systems/Testing and Inspection/Component Tests and General Diagnostics/DLC Circuit Troubleshooting.
5. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
6. Remove the fuel fill cap to relieve the pressure in the fuel tank.
7. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
8. From the INSPECTION MENU of the HDS, select Fuel Pump OFF, then start the engine, and let it idle until it stalls.
NOTE:
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Do not allow the engine to idle above 1,000 rpm or the PCM will continue to operate the fuel pump.
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A Pending or Confirmed DTC may be set during this procedure. Check for DTCs, and clear them as needed See: Computers and Control
Systems/Testing and Inspection/Initial Inspection and Diagnostic Overview.
9. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
10. Do the battery terminal disconnection procedure See: Starting and Charging/Battery/Service and Repair/Procedures.
11. Remove the quick-connect fitting cover (A).
