Dodge Neon / Neon SRT-4. Manual - part 606

TEST

ACTION

APPLICABILITY

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 DRBIII

t 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 DRBIII

t. If any DTC’s are present, they must be

repaired before continuing with any other No Start diagnostic tests. Refer to the
Symptom list 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

t 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 DRBIII

t select Clear PCM (Batt Disconnect).

Crank the engine several times. Using the DRBIII

t, read DTC’s. If a DTC is present

perform the DTC diagnostics before continuing.
Were any problems found?

All

Yes

→ Repair as necessary.

Perform POWERTRAIN VERIFICATION TEST VER - 1.

→ Go To 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?

All

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.

→ Go To 3

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 4

→ Go To 24

Caution: Stop All Actuations.

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TEST

ACTION

APPLICABILITY

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?

All

Yes

→ Go To 5

→ Go To 9

t, 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.

All

Below Specification

Go To

Within Specification

Go To

Above Specification

Replace the fuel filter/fuel pressure regulator.
Perform POWERTRAIN VERIFICATION TEST VER - 1.

Caution: Stop All Actuations.

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

t, 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?

All

Yes

→ Repair/replace fuel supply line as necessary.

Perform POWERTRAIN VERIFICATION TEST VER - 1.

→ Go To 7

Caution: Stop All Actuations.

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TEST

ACTION

APPLICABILITY

All

Yes

→ Replace the Fuel Pump Inlet Strainer.

Perform POWERTRAIN VERIFICATION TEST VER - 1.

→ Replace the Fuel Pump Module.

Perform POWERTRAIN VERIFICATION TEST VER - 1.

The following items need to be checked as a possible cause for a no start condition.
Refer to any Technical Service Bulletins 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?

All

Yes

→ Repair as necessary.

Perform POWERTRAIN VERIFICATION TEST VER - 1.

→ Test Complete.

Turn the ignition on.
With the DRBIII

t in Sensors, select the RPM parameter.

While cranking the engine monitor the RPM parameter.
Does the DRBIII

t display a RPM reading greater than 50 RPM and steady?

All

Yes

→ Go To 10

→ Go To 15

Turn the ignition off.
Disconnect the Ignition Coil harness connector.
Turn the ignition on.
With the DRBIII

t, actuate the ASD Relay.

Using a 12-volt test light connected to ground, probe the ASD Relay Output circuit in
the Ignition Coil harness connector.
Does the test light illuminate brightly?

All

Yes

→ Go To 11

→ Repair the ASD Relay Output circuit.

Perform POWERTRAIN VERIFICATION TEST VER - 1.

Turn the ignition off.
Disconnect the Ignition Coil harness connector.
Using a 12-volt test light connected to 12-volts, probe the Ignition Coil Driver circuit.
Crank the engine for 5 second while observing the test light.
Does the test light blink/flicker?

All

Yes

→ Replace the Ignition Coil.

Perform POWERTRAIN VERIFICATION TEST VER - 1.

→ Go To 12

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TEST

ACTION

APPLICABILITY

Turn the ignition off.
Disconnect the Ignition Coil harness connector.
Disconnect the PCM harness connector.
Measure the resistance of the Ignition Coil driver circuit between the Ignition Coil
harness connector and the PCM harness connector.
Is the resistance below 5.0 ohms?

All

Yes

→ Go To 13

→ Repair the Ignition Coil driver circuit for an open.

Perform POWERTRAIN VERIFICATION TEST VER - 1.

Turn the ignition off.
Disconnect the Ignition Coil harness connector.
Disconnect the PCM harness connector.
Measure the resistance between ground and the Ignition Coil driver circuit in the
Ignition Coil harness connector.
Is the resistance below 100k ohms?

All

Yes

→ Repair the Ignition Coil driver circuit for a short to ground.

Perform POWERTRAIN VERIFICATION TEST VER - 1.

→ Go To 14

If there are no possible causes remaining, view repair.

All

Repair

Replace and program the Powertrain Control Module in accor-
dance with the Service Information.
Perform POWERTRAIN VERIFICATION TEST VER - 1.

Turn the ignition off.
Disconnect the CKP Sensor harness connector.
Turn the ignition on.
Measure the voltage of the 5 Volt Supply circuit in the CKP Sensor harness connector.
Is the voltage between 4.8 and 5.2 volts?

All

Yes

→ Go To 16

→ Repair the 5 Volt Supply circuit.

Perform POWERTRAIN VERIFICATION TEST VER - 1.

Turn the ignition off.
Disconnect the CKP Sensor harness connector.
Turn the ignition on.
Measure the voltage of the CKP Sensor Signal circuit in the CKP Sensor harness
connector.
Is the voltage between 4.5 and 5.0 volts?

All

Yes

→ Go To 17

→ Go To 19

Turn the ignition off.
Disconnect the CKP Sensor harness connector.
Measure the resistance between ground and the Sensor Ground circuit at the CKP
Sensor harness connector.
Is the resistance below 100 ohms?

All

Yes

→ Go To 18

→ Repair the Sensor Ground circuit for an open.

Perform POWERTRAIN VERIFICATION TEST VER - 1.

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