Chrysler 300M 2002 Service Manual page 2496

P0116-ENGINE COOLANT TEMPERATURE PERFORMANCE —
TEST
3 Turn the ignition off.
Disconnect the ECT Sensor harness connector.
Ignition on, engine not running.
With the DRBIII , read the ECT voltage.
Is the voltage above 4.6 volts?
Yes → Go To 4
→ Go To 7
No
4 Turn the ignition off.
Disconnect the ECT Sensor harness connector.
Using a jumper wire, jumper across the IAT Sensor harness connector.
Ignition on, engine not running.
With the DRBIII , read the ECT voltage.
Is the voltage below 1.0 volt?
Yes → Replace the ECT Sensor.
→ Go To 5
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 ECT Sensor 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
→ Repair the open in the ECT Sensor Signal circuit.
No
6 Turn the ignition off.
Disconnect the ECT 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 Sensor ground circuit from the ECT Sensor harness
connector to the appropriate terminal of special tool #8815.
Is the resistance below 5.0 ohms?
Yes → NOTE: Before continuing, check the PCM harness connector
→ Repair the open in the ECT Sensor ground circuit.
No
ACTION
Perform POWERTRAIN VERIFICATION TEST VER - 5.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
terminals for corrosion, damage, or terminal push out. Repair as
necessary. Replace and program the Powertrain Control Module
in accordance with the Service Information.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
DRIVEABILITY - NGC
67
Continued
APPLICABILITY
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All
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