Chrysler 2005 Crossfire SRT6 Service Manual page 2045

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(P0128) THERMOSTAT RATIONALITY (CONTINUED)
11.
ECT SIGNAL SIGNAL CIRCUIT OPEN
Turn the ignition off.
Disconnect the PCM C3 harness connector.
Note: Check connectors — Clean/repair as necessary.
Measure the resistance of the ECT Signal circuit from the ECT Sensor
harness connector to the PCM C3 harness connector.
Is the resistance below 5.0 ohms?
Yes >> Go To 12
No >> Repair the ECT Signal circuit for an open.
Perform POWERTRAIN VERIFICATION TEST - VER 2.
12.
SENSOR GROUND CIRCUIT OPEN
With the ignition off.
Measure the resistance of the Sensor Ground circuit from the ECT
Sensor harness connector to the PCM C3 harness connector.
Is the resistance below 5.0 ohms?
Yes >> Replace and program the Powertrain Control Module.
(Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL
MODULES/POWERTRAIN
REMOVAL).
Perform POWERTRAIN VERIFICATION TEST - VER 2.
No >> Repair the Sensor Ground circuit for an open.
Perform POWERTRAIN VERIFICATION TEST - VER 2.
ENGINE - ELECTRICAL DIAGNOSTICS 9 - 121
CONTROL MODULE -