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New Beetle L4-2.0L (AZG) (2003)

Sensors and Switches > Sensors and Switches - Cooling System > Engine - Coolant Temperature Sensor/Switch > Coolant Temperature Sensor/Switch (For Computer) > Component Information > Testing and Inspection > With Manufacturer's Scan Tool > Page 866

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Systems/Testing and Inspection/Reading and Clearing Diagnostic Trouble Codes/Reading Diagnostic Trouble Codes   

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Read readiness code. If DTC memory has been erased or engine control module was disconnected from permanent positive, readiness code must
be generated again.

See: Powertrain Management/Computers and Control Systems/Testing and Inspection/Monitors, Trips, Drive Cycles and Readiness Codes 
See: Powertrain Management/Computers and Control Systems/Testing and Inspection/Monitors, Trips, Drive Cycles and Readiness Codes  

If display remains at approx. 140 °C:

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Press -> button.

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Press buttons 0 and 6 for "End output" function and confirm input with Q button.

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Switch ignition off.

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Check wiring using wiring diagram.

Checking wiring

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Remove inner plenum chamber cover, left:

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Connect test box V.A.G 1598/31 to control module wiring harness. Engine control module is not connected by this action.

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Disconnect 4 pin connector off Engine Coolant Temperature (ECT) sensor (G62) with coolant temperature gauge sensor (G2) - arrow-.

Sensors and Switches > Sensors and Switches - Cooling System > Engine - Coolant Temperature Sensor/Switch > Coolant Temperature Sensor/Switch (For Computer) > Component Information > Testing and Inspection > With Manufacturer's Scan Tool > Page 866

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