Dodge 2004 Neon SX2 Diagnostic Manual page 789

TRANSMISSION - NGC
P0720-OUTPUT SPEED SENSOR ERROR —
TEST
6 Turn the ignition off to the lock position.
Disconnect the PCM harness connector.
Disconnect the Output Speed Sensor harness connector.
Note: Check connectors - Clean/repair as necessary.
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 Speed Sensor Ground circuit from the appropriate
terminal of special tool #8815 to the Output Speed Sensor harness connector.
Is the resistance above 5.0 ohms?
Yes → Repair the Speed Sensor Ground circuit for an open.
→ Go To 7
No
7 Turn the ignition off to the lock position.
Disconnect the PCM harness connector.
Disconnect the Output Speed Sensor harness connector.
Note: Check connectors - Clean/repair as necessary.
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 between ground and the Output Speed Sensor Signal circuit.
Is the resistance below 5.0 ohms?
Yes → Repair the Output Speed Sensor Signal circuit for a short to
→ Go To 8
No
8 Turn the ignition off to the lock position.
Disconnect the PCM harness connector.
Disconnect the Output Speed Sensor harness connector.
Remove the Transmission Control Relay.
Note: Check connectors - Clean/repair as necessary.
Connect a jumper wire between the Fused B+ circuit and Transmission Control Relay
Output circuit in the Transmission Control Relay connector.
Ignition on, engine not running.
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 voltage of the Output Speed Sensor Signal circuit.
Is the voltage above 0.5 volt?
Yes → Repair the Output Speed Sensor Signal circuit for a short to
→ Go To 9
No
ACTION
Perform 41TE (NGC) TRANSMISSION VERIFICATION TEST -
VER 1.
ground.
Perform 41TE (NGC) TRANSMISSION VERIFICATION TEST -
VER 1.
voltage.
Perform 41TE (NGC) TRANSMISSION VERIFICATION TEST -
VER 1.
Continued
68
APPLICABILITY
All
All
All