Dodge 2004 Neon SX2 Diagnostic Manual page 656

STARTING
*ENGINE CRANKS DOES NOT START —
TEST
18 NOTE: Inspect the slots on the crank, tone wheel, for damage. If a problem
is found repair as necessary.
If there are no possible causes remaining, view repair.
Repair
19 Turn the ignition off.
Disconnect the CKP Sensor harness connector.
Disconnect the PCM harness connectors.
Measure the resistance of the CKP Sensor Signal circuit from the CKP Sensor
harness connector to the PCM harness connector.
Is the resistance below 5.0 ohms?
Yes → Go To 20
→ Repair the CKP Sensor Signal circuit for an open.
No
20 Turn the ignition off.
Disconnect the CKP Sensor harness connector.
Measure the resistance between ground and the CKP Sensor Signal circuit at the
CKP Sensor harness connector.
Is the resistance below 100 ohms?
Yes → Repair the CKP Sensor Signal circuit for a short to ground.
→ Go To 21
No
21 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 above 4.7 volts?
Yes → Repair the CKP Sensor Signal circuit for a short to battery
→ Go To 22
No
22 Turn the ignition off.
Disconnect the CKP Sensor harness connector.
Disconnect the PCM harness connector(s).
Measure the resistance between the CKP Sensor Signal circuit and the 5 Volt Supply
circuit in the CKP Sensor harness connector.
Is the resistance below 5.0 ohms?
Yes → Repair the CKP Sensor Signal circuit shorted to the 5 Volt Supply
→ Go To 23
No
ACTION
Replace the Crankshaft Position Sensor.
Perform POWERTRAIN VERIFICATION TEST VER - 1.
Perform POWERTRAIN VERIFICATION TEST VER - 1.
Perform POWERTRAIN VERIFICATION TEST VER - 1.
voltage.
Perform POWERTRAIN VERIFICATION TEST VER - 1.
circuit.
Perform POWERTRAIN VERIFICATION TEST VER - 1.
Continued
320
APPLICABILITY
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