Volkswagen Workshop Manuals
New Beetle L4-2.0L (AZG) (2003)
Sensors and Switches > Sensors and Switches - Powertrain Management > Sensors and Switches - Computers and Control Systems > Coolant Temperature Sensor/Switch (For Computer) > Component Information > Technical Service Bulletins > Engine Coolant Temperature (ECT) Sensor - Checking > Page 1031
Applies to vehicle and engine codes listed in the table.
Engine Coolant Temperature (ECT) Sensor, Checking
The cooling system is under pressure. Danger of scalding when opening! Allow engine to cool before opening cooling system.
Do not use this procedure or replace Engine Coolant Temperature Sensor -G62- if no fault codes are stored or fault codes unrelated to coolant system are
If DTCs P1296, P2181, P0128 or P3081 are occurring without electrical faults (P0116-P0118) and replacement of Engine Coolant Temperature
The Engine Control Module (ECM) will use a replacement temperature value for an engine start as soon as there is a DTC stored in the DTC memory
Only gold-plated terminals must be used to repair the terminals in the wiring harness connector for the Engine Coolant Temperature (ECT) Sensor
Special Tools and Equipment
See Required Parts and Tools
Fuses of Motronic Engine Control Module (ECM) -J220- must be valid. See ElsaWeb; Electrical Wiring Diagrams, Troubleshooting and
Parking brake must be engaged or daylight running lights will be switched ON.
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