Dodge 2004 Neon SX2 Diagnostic Manual page 525

P0501-VEHICLE SPEED SENSOR #1 PERFORMANCE (MANUAL TRANS)
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Continued
TEST
3 Turn the ignition off.
Disconnect the Vehicle Speed Sensor harness connector.
Turn the ignition on.
Measure the voltage of the (G7) VSS Signal circuit in the VSS harness connector.
Is the voltage between 4.5 to 5.0 volts?
Yes → Go To 4
→ Go To 5
No
4 Turn the ignition off.
Disconnect the Vehicle Speed Sensor harness connector.
Measure the resistance of the (K4) Sensor ground circuit between the VSS harness
connector and ground.
Is the resistance below 5.0 ohms?
Yes → Remove and inspect the Pinion Gear. If OK, replace the Vehicle
→ Repair the (K4) Sensor ground circuit for an open.
No
5 Turn the ignition off.
Disconnect the Vehicle Speed Sensor harness connector.
Disconnect the PCM harness connector.
Measure the resistance of the (G7) Vehicle Speed Sensor Signal circuit in the VSS
harness connector to ground.
Is the resistance below 100 ohms?
Yes → Repair the (G7) VSS Signal circuit for a short to ground.
→ Go To 6
No
6 Turn the ignition off.
Disconnect the Vehicle Speed Sensor harness connector.
Disconnect the PCM harness connector.
CAUTION: DO NOT PROBE THE PCM HARNESS CONNECTORS. PROBING
THE PCM HARNESS CONNECTORS WILL DAMAGE THE PCM TERMI-
NALS RESULTING IN POOR TERMINAL TO PIN CONNECTION. INSTALL
MILLER SPECIAL TOOL #8815 TO PERFORM DIAGNOSIS.
Measure the resistance of the (G7) VSS Signal circuit between the VSS harness
connector and to the appropriate terminal of special tool #8815.
Is the resistance below 5 ohms?
Yes → Go To 7
→ Repair the (G7) VSS Signal circuit for an open.
No
7 NOTE: Before continuing, check the PCM harness connector terminals for
corrosion, damage, or terminal push out. Repair as necessary.
If there are no possible causes remaining, view repair,
Repair
ACTION
Speed Sensor.
Perform POWERTRAIN VERIFICATION TEST VER - 5 - NGC.
Perform POWERTRAIN VERIFICATION TEST VER - 5 - NGC.
Perform POWERTRAIN VERIFICATION TEST VER - 5 - NGC.
Perform POWERTRAIN VERIFICATION TEST VER - 5 - NGC.
Replace and program the Powertrain Control Module in accor-
dance with the Service Information.
Perform POWERTRAIN VERIFICATION TEST VER - 5 - NGC.
DRIVEABILITY - NGC
189
APPLICABILITY
All
All
All
All
All