TEST
ACTION
APPLICABILITY
3
Turn the ignition off.
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.
Raise vehicle on hoist, and disconnect the fuel pressure line at the fuel pump module.
Install special 5/16
9 fuel line adapter tool #6539 between disconnected fuel line and
the fuel pump module.
Attach a fuel pressure test gauge to the
9T9 fitting on tool #6539.
Turn the ignition on.
With the DRBIII
t, actuate the ASD Fuel System test and observe the fuel pressure
gauge.
NOTE: Fuel pressure specification is 334 KPa +/- 34 KPa (49.2 psi +/- 5 psi).
Is the fuel pressure within specification now?
All
Yes
→
Repair/replace fuel supply line as necessary.
Perform POWERTRAIN VERIFICATION TEST VER - 1.
No
→
Go To
4
Caution: Stop All Actuations.
4
Turn the ignition off.
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.
Remove the Fuel Pump Module and inspect the Fuel Inlet Strainer.
Is the Fuel Inlet Strainer plugged?
All
Yes
→
Replace the Fuel Pump Inlet Strainer.
Perform POWERTRAIN VERIFICATION TEST VER - 1.
No
→
Replace the Fuel Pump Module.
Perform POWERTRAIN VERIFICATION TEST VER - 1.
5
Turn the ignition on.
With the DRBIII
t, actuate the ASD Fuel System test.
Note: It may be necessary to use a mechanics stethoscope in the next step.
Listen for fuel pump operation at the fuel tank.
Does the Fuel Pump operate?
All
Yes
→
Go To
6
No
→
Go To
7
Caution: Stop All Actuations.
245
DRIVEABILITY - GAS
*CHECKING FUEL DELIVERY —
Continued