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Passat Sedan V6-3.6L (BLV) (2008)

Engine, Cooling and Exhaust > Cooling System > Sensors and Switches - Cooling System > Engine - Coolant Temperature Sensor/Switch > Coolant Temperature Sensor/Switch (For Computer) > Component Information > Testing and Inspection > Engine Coolant Temperature Sensor G62, Checking > Page 2489

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Coolant Temperature Sensor/Switch (For Computer): Testing and Inspection
Engine Coolant Temperature Sensor G83 On Radiator, Checking

Engine Coolant Temperature Sensor G83 On Radiator, Checking

CAUTION:

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Cooling system is under pressure.

-

Danger of scalding when opening.

NOTE:  Use only gold-plated terminals when servicing terminals in the electrical harness connector of Engine Coolant Temperature (ECT) Sensor G62.

Special tools, testers and auxiliary items required

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Multimeter.

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jumper wire.

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Wiring diagram.

Test requirements

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The Motronic Engine Control Module (ECM) J623 fuses OK.

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Battery voltage at least 12.5 volts.

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All electrical consumers such as, lights and rear window defroster, switched off.

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Vehicles with automatic transmission, shift selector lever into position "P" or "N".

-

A/C switched off.

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Ground (GND) connections between engine/transmission/chassis OK.

-

Ignition switched off.

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Engine cold.

Test procedure

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Perform a preliminary check to verify the customers complaint.  See: Powertrain Management/Computers and Control Systems/Testing and
Inspection/Scan Tool Testing and Procedures/Preliminary Check

Start diagnosis

Function test

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Connect the scan tool.

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Switch the ignition on.

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Using the scan tool, check the coolant temperature:

Diagnostic text

Specified value

Coolant temperature

Approx. coolant temperature

If the specified value is not obtained:

-

Continue test according to the following table:

Indicated

Cause

approx. -40.0 degrees C

Open circuit or short circuit to (B+)

approx. 140.0 degrees C

Short circuit to Ground (GND)

If the specified value was obtained:

-

Start the engine and let it run at idle.

Engine, Cooling and Exhaust > Cooling System > Sensors and Switches - Cooling System > Engine - Coolant Temperature Sensor/Switch > Coolant Temperature Sensor/Switch (For Computer) > Component Information > Testing and Inspection > Engine Coolant Temperature Sensor G62, Checking > Page 2489

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