Chrysler Concorde 2004 Service Manual page 730

DRIVEABILITY - NGC
P0116-ENGINE COOLANT TEMPERATURE PERFORMANCE —
TEST
2 Turn the ignition off.
Disconnect the ECT Sensor harness connector.
NOTE: Visually inspect both the component and the PCM connectors. Look
for damaged, partially broken wires, and backed out or corroded terminals.
Ignition on, engine not running.
Measure the voltage on the (K2) ECT Signal circuit in the ECT Sensor harness
connector.
Is the voltage above 5.2 volts?
Yes → Repair the short to battery voltage in the (K2) ECT Signal circuit.
No
3 Turn the ignition off.
Disconnect the ECT Sensor harness connector.
Ignition on, engine not running.
With the DRBIII , read the ECT Sensor voltage.
Is the voltage above 4.6 volts?
Yes → Go To 4
No
4 Turn the ignition off.
Disconnect the ECT Sensor harness connector.
Using a jumper wire, jumper across the ECT Sensor harness connector.
Ignition on, engine not running.
With the DRBIII , read the ECT Sensor voltage.
Is the voltage below 1.0 volt?
Yes → Replace the ECT Sensor.
No
5 Turn the ignition off.
Disconnect the ECT 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 (K2) ECT Signal circuit from the ECT Sensor harness
connector to the appropriate terminal of special tool #8815.
Is the resistance below 5.0 ohms?
Yes → Go To 6
No
ACTION
Perform POWERTRAIN VERIFICATION TEST VER - 5 - NGC.
→ Go To 3
→ Go To 7
Perform POWERTRAIN VERIFICATION TEST VER - 5 - NGC.
→ Go To 5
→ Repair the open in the (K2) ECT Signal circuit.
Perform POWERTRAIN VERIFICATION TEST VER - 5 - NGC.
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APPLICABILITY
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