Dodge 2004 Neon SX2 Diagnostic Manual page 653

*ENGINE CRANKS DOES NOT START —
TEST
4 NOTE: Repeat the following test at each Ignition wire. If spark is not
present or is weak on only one or two Ignition wires, the problem may be
the Ignition wire. Inspect all Ignition wires for proper operation.
Turn the ignition off.
Disconnect the #1 Ignition wire.
Connect a spark plug tester to the end of the Ignition wire.
While cranking the engine, observe the spark tester.
Is spark present?
Yes → Go To 5
→ Go To 9
No
5 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.
Install a fuel pressure gauge.
Turn the ignition on.
With the DRBIII , actuate the ASD Fuel System test and observe the fuel pressure
gauge.
NOTE: Fuel pressure specification is 400 kPa +/- 34 kPa (58 psi +/- 5 psi).
Choose a conclusion that best matches your fuel pressure reading.
Below Specification
Within Specification
Above Specification
Caution: Stop All Actuations.
6 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 fuel line adapter tool #6539 between the disconnected fuel line
and the fuel pump module.
Attach a fuel pressure test gauge to the T fitting on the tool #6539
Turn the ignition on.
With the DRBIII , actuate the ASD Fuel System test and observe the fuel pressure
gauge.
NOTE: Fuel pressure specification is 400 KPa +/- 34 KPa (58 psi +/- 5 psi).
Is the fuel pressure within specification now?
Yes → Repair/replace fuel supply line as necessary.
→ Go To 7
No
Caution: Stop All Actuations.
ACTION
Go To 6
Go To 8
Replace the fuel filter/fuel pressure regulator.
Perform POWERTRAIN VERIFICATION TEST VER - 1.
Perform POWERTRAIN VERIFICATION TEST VER - 1.
Continued
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STARTING
APPLICABILITY
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