1997 Dodge Neon crank no start

Tiny
DONALD_HALEY
  • MEMBER
  • 1997 DODGE NEON
  • 4 CYL
  • FWD
  • AUTOMATIC
  • 155,000 MILES
Car was brought to me for crank no start. New battery, crank sensor, plugs, still no start
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Tuesday, December 23rd, 2008 AT 9:23 AM

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Tiny
ZACKMAN
  • MEMBER
1. The following checks must be performed before continuing with this test.
Ensure battery is fully charged and in good condition.
Ensure Powertrain Control Module (PCM) power and ground circuits are okay.
Ensure PCM communicates with scan tool and no Diagnostic Trouble Codes (DTC) are
present.
Ensure PCI bus is functional. Using scan tool, attempt to communicate with instrument cluster and Sentry Key Immobilizer Module (SKIM). If scan tool does not communicate with instrument cluster or SKIM, diagnose communication failure.
Using scan tool, select CLEAR PCM (BATT DISCONNECT). Crank engine over several times. Using scan tool, check for DTCs. If any DTCs are present, perform appropriate diagnostic test. If no DTCs exist, go to next step.
If Powertrain Control Module (PCM) is replaced, PCM must be reprogrammed.

2. Turn ignition off. Check Power Distribution Center (PDC) and fuse panel for blown fuses. PDC is located in engine compartment. Fuse panel is located on left side of instrument panel. Replace blown fuses and check related circuits for short to ground. If fuses are okay, go to next step.
3. Using scan tool, actuate Auto Shutdown (ASD) fuel system test. Using a mechanic's stethoscope, listen for fuel pump operation at fuel tank. If fuel pump operation cannot be heard, stop ASD fuel system actuation and go to step 10. If fuel pump operation can be heard, stop ASD fuel system actuation and go to next step.
4. Turn ignition off. Release fuel pressure. Connect a fuel pressure gauge to test port on fuel rail. Turn ignition on. Using scan tool, actuate ASD fuel system test. Allow fuel pressure gauge to stabilize. Stop
ASD fuel system activation. Fuel pressure should be 53-63 psi (365-434 kPa). If fuel pressure is less than specified, go to next step. If fuel pressure is more than specified, replace fuel filter/pressure regulator. If fuel pressure is as specified, go to step 7.
5. Release fuel pressure. Raise and support vehicle. Disconnect fuel pressure line from fuel
filter/pressure regulator at fuel tank. Connect Fuel Line Pressure Test Adapter Hose (6539)
between disconnected fuel line and fuel filter/pressure regulator. Connect fuel pressure gauge
to fuel line adapter hose. Turn ignition on. Using scan tool, actuate ASD fuel system test and note fuel pressure. Fuel pressure should be 53-63 psi (365-434 kPa). If fuel pressure is as specified, stop ASD fuel system activation. Release fuel pressure, and repair or replace fuel supply line. If fuel pressure is not as specified, stop ASD fuel system activation and go to next step.
6. Release fuel pressure. Remove fuel pump module and inspect fuel inlet strainer. If fuel inlet strainer is plugged, replace fuel pump inlet strainer. If fuel inlet
strainer is not plugged, replace fuel pump module.
7. Turn ignition off. Release fuel pressure. Disconnect fuel supply line from fuel rail. Install Fuel Line Pressure Test Adapter Hose (6539 for 5/16" fuel lines or 6631 for 3/8" fuel lines) between disconnected fuel line and fuel rail. Remove fuel fill cap. Insert other end of hose into a graduated container suitable for gasoline.
8. Using scan tool, actuate ASD fuel system test for 7 seconds. If fuel volume is.5 pt. (.25L) or more, fuel volume is okay. Stop fuel system activation. Remove all test equipment and reconnect fuel supply line to fuel rail. Go to next step. Test is complete. If fuel volume is less than.5 pt. (.25L), check for a kinked fuel line between fuel pump module and fuel rail. Repair fuel lines as necessary and retest. If fuel line is okay, replace fuel pump module.
9. Check the following additional items as possible causes for no-start condition:
Check spark plug condition.
Check for any related technical service bulletins.
Fuel must be free of contamination.
Engine exhaust system must be free of restrictions.
Engine compression must be within specification.
Engine valve timing must be within specification.
Engine must be free of vacuum leaks.
WARNING: High fuel pressure may be present in fuel lines. Open fuel
system with caution.
CAUTION: DO NOT operate fuel pump longer than 7 seconds.
Repair any problems as necessary. If no problems exist, test is complete.
10. Turn ignition off. Disconnect fuel pump module harness connector. Turn ignition on. Using scan tool, actuate ASD fuel system test. Connect a test light between ground and fuel pump relay output circuit (Dark Green/White wire) at fuel pump module harness connector. If test light illuminates brightly, go to next step. If test light does not illuminate brightly, go to step 13.
11. Turn ignition off. Connect a test light between battery positive and fuel pump ground circuit
(Black wire) at fuel pump module harness connector. If test light illuminates brightly, go to next step. If test light does not illuminate brightly, repair open in Black wire between ground and fuel pump module.
12. If no other possible causes are remaining, replace fuel pump module.
13. Turn ignition off. Ensure fuel pump module is disconnected. Remove fuel pump relay from
PDC. PDC is located in engine compartment. Connect a test lightbetween ground and fused battery voltage circuit (Red/White wire) at fuel pump relay harness connector terminal No. 60 in PDC. If test light illuminates, go to next step. If test light does not illuminate, repair open or short in fused battery voltage circuit.
14. Measure resistance of fuel pump relay output circuit (Dark Green/White wire) between fuel
pump module harness connector and fuel pump relay harness connector terminal No. 61 in PDC. If resistance is less than 5 ohms, replace fuel pump relay. If resistance is 5 ohms or more, repair open in Dark Green/White wire.

NO RESPONSE FROM PCM WITH A NO-START CONDITION
After each repair procedure has been completed, reconnect all components.

1. Turn ignition off. Disconnect PCM harness connectors. Connect a test light between ground and fused battery voltage circuit (Red/White wire) at PCM C2 harness connector terminal No. 46. If test light illuminates brightly, go to next step. If test
light does not illuminate brightly, repair open in fused battery voltage circuit.
2. Turn ignition on. Connect a test light between ground and fused ignition switch output circuit
(Dark Blue/White wire) at PCM C1 harness connector terminal No. 20. If test light illuminates
brightly, go to next step. If test light does not illuminate brightly, repair open in fused ignition
switch output circuit.
3. Turn ignition off. Using a test light connected to battery positive, individually probe the
following ground circuits:
Black/Tan wire at PCM C1 harness connector terminal No. 10.
Black/White wire at PCM C2 harness connector terminal No. 47.
Black/Tan wire at PCM C2 harness connector terminal No. 50.
If test light illuminates at each ground circuit, test is complete. If test light does not illuminate
at each ground circuit, repair open in appropriate ground circuit.
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Tuesday, December 23rd, 2008 AT 9:10 PM

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