Chrysler Concorde 2004 Service Manual page 700

DRIVEABILITY - NGC
P0068-MANIFOLD PRESSURE/THROTTLE POSITION CORRELATION -
HIGH FLOW/VACUUM LEAK —
TEST
5 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 (K6) 5 Volt Supply 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 6
No
6 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 7
No
7 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
8 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 9
No
ACTION
→ Repair the TP Sensor (K6) 5 Volt Supply circuit.
Perform POWERTRAIN VERIFICATION TEST VER - 5 - NGC.
→ Repair the (K6) 5 Volt Supply circuit.
Perform POWERTRAIN VERIFICATION TEST VER - 5 - NGC.
Perform POWERTRAIN VERIFICATION TEST VER - 5 - NGC.
→ Go To 8
→ Repair the (K22) TP Signal circuit.
Perform POWERTRAIN VERIFICATION TEST VER - 5 - NGC.
Continued
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APPLICABILITY
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