Crossfire V6-3.2L VIN L (2004)
Diagnostic Test
1. FUEL PUMP OPERATION
WARNING: THE FUEL SYSTEM IS UNDER A CONSTANT PRESSURE EVEN WITH THE ENGINE OFF. BEFORE TESTING OR
SERVICING ANY FUEL SYSTEM HOSE, FITTING OR LINE, THE FUEL SYSTEM PRESSURE MUST BE RELEASED.
Turn the ignition on.
With the DRB III, actuate the Fuel Pump Relay.
Listen for fuel pump operation. Stop All Actuations.
Does the Fuel Pump operate?
Yes>> Go To 2
No>> Go To 4
2. FUEL PRESSURE
WARNING: THE FUEL SYSTEM IS UNDER A CONSTANT PRESSURE EVEN WITH THE ENGINE OFF. BEFORE TESTING OR
SERVICING ANY FUEL SYSTEM HOSE, FITTING OR LINE, THE FUEL SYSTEM PRESSURE MUST BE RELEASED.
Turn the ignition off.
Install a fuel pressure gauge at the engine.
Turn the ignition on.
With the DRB III, actuate the Fuel Pump Relay and observe the fuel pressure gauge.
Note: Fuel pressure specification is 3.7 to 4.2 bar (54 to 61 psi). Stop All Actuations.
Choose a conclusion that best matches your fuel pressure reading.
Below Specification Go To 3
Within Specification Test Complete.
Above Specification Replace the fuel filter/fuel pressure regulator.
Perform See: Computers and Control Systems/Testing and Inspection/Diagnostic Trouble Code Tests and Associated Procedures/Verification
Tests/Powertrain Verification Test - Ver 3
3. CHECKING FUEL STRAINER
WARNING: THE FUEL SYSTEM IS UNDER A CONSTANT PRESSURE EVEN WITH THE ENGINE OFF. BEFORE TESTING OR
SERVICING ANY FUEL SYSTEM HOSE, FITTING OR LINE, THE FUEL SYSTEM PRESSURE MUST BE RELEASED.
Turn the ignition off. Remove and inspect the Fuel Strainer.
Is the Fuel Strainer plugged?
Yes>> Replace the Fuel Strainer.
Perform See: Computers and Control Systems/Testing and Inspection/Diagnostic Trouble Code Tests and Associated Procedures/Verification
Tests/Powertrain Verification Test - Ver 3
No>> Replace the Fuel Pump.
