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Diagnostic Procedure

WARNING: This page is about a different car, the 2005 Dodge Stratus and 2005 Chrysler Sebring. However, it is still accessible from the selected car via links, so may be relevant.
DIAGNOSTIC PROCEDURES - ENGINE CRANKS DOES NOT START

TEST ACTION APPLICABILITY
1
NOTE: The following list of items must be checked before continuing with any no start tests.
The battery must be fully charged and in good condition. A low charged battery may produce invalid test results. If the battery is low, charge the battery and then attempt to start the vehicle by cranking the engine for 15 seconds, 3 consecutive times.This will allow any DTC's to set that may have been erased due to a dead battery.Ensure the Powers and Ground to the PCM are OK.Make sure the PCM communicates with the DRB and that there are no DTC's stored in the PCM memory. If the PCM reports a No Response condition, refer to the COMMUNICATION CATEGORY  for the proper tests.Read the PCM DTC's with the DRB. If any DTC's are present, they must be repaired before continuing with any other No Start diagnostic tests. Refer to appropriate test for the related P-code that is reported by the PCM.Ensure that the PCI bus is functional. Attempt to communicate with the Instrument Cluster and SKIM, If you are unable to establish communicate refer to the COMMUNICATION CATEGORY  for the proper symptoms.The Sentry Key Immobilizer System must be operating properly. Check for proper communication with the DRBIII® and check for DTC's that may be stored in the Sentry Key Immobilizer Module (SKIM). repair the DTC(s) before continuing.If no DTC's are found, using the DRB select Clear PCM (Batt Disconnect).Crank the engine several times. Using the DRB, read DTC's. If a DTC is present perform the DTC diagnostics before continuing.Were any problems found?Yes --> Repair as necessary.Perform POWERTRAIN VERIFICATION TEST VER - 1 .No --> Go To 2		 All
2 Check for any open fuses in the PDC or Fuse Block that may be related to the No Start condition.
Are any of the fuses open?
Yes --> Using the wiring diagram/schematic as a guide, inspect the wiring and connectors, repair as necessary. Replace the Fuse.
Perform POWERTRAIN VERIFICATION TEST VER - 1 .
No --> Go To 3		 All
3 Turn the ignition on.
With the DRBIII®, 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?
Yes --> Go To 4
No --> Go To 8
CAUTION: Stop All Actuations.
 All
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.

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
Go To 5
Within Specification
Go To 7
Above Specification
Replace the fuel filter/fuel pressure regulator.
Perform POWERTRAIN VERIFICATION TEST VER - 1 .
CAUTION: Stop All Actuations.
 All
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.

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.
Perform POWERTRAIN VERIFICATION TEST VER - 1 .
No --> Go To 6
CAUTION: Stop All Actuations.
 All
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.

Remove the Fuel Pump Module and inspect the Fuel Inlet Strainer.
Is the Fuel Inlet Strainer plugged?
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 .		 All
7 The following items need to be checked as a possible cause for a no start condition.
Refer to any Technical Service Bulletins (TSBs) that may apply to the symptom.
The spark plugs must be free from fuel, oil, coolant and/or any foreign material or deposits.
The fuel must be free from contamination.
The exhaust may be free from restrictions.
The engine compression must be within specifications.
The engine valve timing must be within specifications.
The engine must be free from vacuum leaks.
Were any of the above conditions found?
Yes --> Repair as necessary.
Perform POWERTRAIN VERIFICATION TEST VER - 1 .
No --> Test Complete.		 All
8 Turn the ignition off.
Disconnect the fuel pump module harness connector.
Turn the ignition on.
With the DRBIII®, actuate the ASD Fuel System test.
Using a 12 volt test light connected to ground, probe the Fuel Pump Relay Output circuit at the Fuel Pump Module harness connector.
Does the test light illuminate brightly?
Yes --> Go To 9
No --> Go To 11
CAUTION: Stop All Actuations.
 All
9 Turn the ignition off.
Disconnect the Fuel Pump Module harness connector.
NOTE: Check connectors - It is critical that the connector is free from any signs of corrosion or deformities - Clean/repair as necessary.

Using a test light connected to battery voltage, probe the Fuel Pump ground circuit at the Fuel Pump Module harness connector.
Does the test light illuminate brightly?
Yes --> Go To 10
No --> Repair the open/high resistance in the fuel pump ground circuit.
Perform POWERTRAIN VERIFICATION TEST VER - 1 .		 All
10 If there are no possible causes remaining, view repair.
Repair
Replace the Fuel Pump Module.
Perform POWERTRAIN VERIFICATION TEST VER - 1 .		 All
11 Turn the ignition off.
Remove the Fuel Pump Relay from the PDC.
With a 12 volt test light connected to ground, probe the Fuel Pump Relay Fused B+ circuit at the PDC.
Does the test light illuminate?
Yes --> Go To 12
No --> Repair the Fuel Pump Relay Fused B+ circuit. Check for open fuse in the PDC.
Perform POWERTRAIN VERIFICATION TEST VER - 1 .		 All
12 Turn the ignition off.
Remove the Fuel Pump Relay from the PDC.
Disconnect the Fuel Pump Module harness connector.
NOTE: Check connectors - It is critical that the connector is free from any signs of corrosion or deformities

Measure the resistance of the Fuel Pump Relay Output circuit from the relay connector to the fuel pump module connector.
Is the resistance below 5.0 ohms?
Yes --> Replace the Fuel Pump Relay.
Perform POWERTRAIN VERIFICATION TEST VER - 1 .
No --> Repair the open fuel pump relay output circuit.
Perform POWERTRAIN VERIFICATION TEST VER - 1 .		 All
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