Passat Sedan V6-3.6L (BLV) (2008)
Disconnect the Engine Coolant Temperature (ECT) Sensor G83 electrical harness connector - 1 -.
If indication jumps to approx. -40.0 degrees C:
End diagnosis and switch ignition off.
Replace the the Engine Coolant Temperature (ECT) Sensor G83 Engine Mechanical, Fuel Injection Ignition.
If indication remains at approx. 140.0 degrees C:
If the manufacturers test box is being used. Perform the following step.
Install the test box.
If the manufacturers test box is not being used. Perform the following step.
Remove the Motronic Engine Control Module (ECM) J623.
Using a Multimeter, check the Engine Coolant Temperature (ECT) Sensor G83 electrical harness connector terminals to the Motronic Engine
Control Module (ECM) J623 electrical harness connector T94 terminals for an open circuit according to the wiring diagram.
Engine Coolant Temperature
Motronic Engine Control Module
(ECT) Sensor (on radiator)
(ECM) J623 electrical connector
G832 electrical harness
T94 terminals or test box socket
Specified value: 1.5 Ohms Max.
If the specification was not obtained:
Check the wiring for a short circuit to each other, Battery (+), and Ground (GND).
Check the electrical harness connector for damage, corrosion, loose or broken terminals.
If necessary, repair the faulty wiring connection.
Erase the DTC memory. .
Perform a road test to verify repair.
If the DTC does not return:
Repair complete, Generate readiness code. See: Powertrain Management/Computers and Control Systems/Testing and Inspection/Monitors, Trips, Drive
Cycles and Readiness Codes