TEST ACTION APPLICABILITY
12 Turn the ignition off.
Disconnect the applicable Temperature Sensor harness connector.
Disconnect the PCM harness connector.
Measure the resistance between ground and the Signal circuit in the Temperature
harness connector.
Is the resistance below 100 ohms?
All
Yes → Repair the short to ground in the Signal circuit.
Perform POWERTRAIN VERIFICATION TEST VER-5-NGC.
No → Go To 13
13 Turn the ignition off.
Disconnect the applicable Temperature Sensor harness connector.
Disconnect the PCM harness connector.
Measure the resistance between the Signal circuit and the Sensor ground circuit in
the Temperature Sensor harness connector.
Is the resistance below 100 ohms?
All
Yes → Repair the Sensor ground shorted to the Signal circuit.
Perform POWERTRAIN VERIFICATION TEST VER-5-NGC.
No → NOTE: Before continuing, check the PCM harness connector
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-NGC.
87
DRIVEABILITY - NGC
P0128-THERMOSTAT RATIONALITY — Continued
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