Dodge 2004 Neon SX2 Diagnostic Manual page 380

DRIVEABILITY - NGC
P0068-MANIFOLD PRESSURE/THROTTLE POSITION CORRELATION —
Continued
TEST
5 Turn the ignition off.
Disconnect the TP Sensor harness connector.
Disconnect the PCM harness connector.
Measure the resistance between ground and the (K6) 5 Volt Supply circuit at the TP
Sensor harness connector.
Is the resistance above 100k ohms?
Yes → Go To 6
No
6 Turn the ignition off.
Disconnect the TP Sensor harness connector.
With the DRBIII , monitor the TP Sensor voltage.
Ignition on, engine not running.
Connect a jumper wire between the (K22) TP Signal circuit and the (K4) Sensor
ground circuit .
Does the TP Sensor voltage change from approximately 4.9 volts to below 0.5 of a
volt?
Yes → Replace the Throttle Position Sensor.
No
7 Turn the ignition off.
Disconnect the TP 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 (K22) TP Signal circuit from the TP Sensor harness
connector to the appropriate terminal of special tool #8815.
Is the resistance below 5.0 ohms?
Yes → Go To 8
No
8 Turn the ignition off.
Disconnect the TP Sensor harness connector.
Disconnect the PCM harness connector.
Measure the resistance between ground and the (K22) TP Signal circuit in the TP
Sensor harness connector.
Is the resistance above 100k ohms?
Yes → Go To 9
No
ACTION
→ Repair the (K6) 5 Volt Supply circuit.
Perform POWERTRAIN VERIFICATION TEST VER - 5 - NGC.
Perform POWERTRAIN VERIFICATION TEST VER - 5 - NGC.
→ Go To 7
→ Repair the (K22) TP Signal circuit.
Perform POWERTRAIN VERIFICATION TEST VER - 5 - NGC.
→ Repair the (K22) TP Sensor Signal circuit.
Perform POWERTRAIN VERIFICATION TEST VER - 5 - NGC.
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APPLICABILITY
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