New Beetle L4-2.0L (AZG) (2003)
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Observe display in display zone 4. It must show: Compr. OFF.
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Switch on air conditioning system and select lowest temperature and highest blower speed.
The display in display zone 4 must change to Compr. ON.
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Quickly floor accelerator pedal and release (brief burst of throttle).
Display zone 4 must change from Compr.ON to Compr. OFF for a few seconds (compressor switch-off when vehicle is accelerating).
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Press -> button.
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Press buttons 0 and 6 for the "End output" function and confirm input with Q button.
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Switch ignition off.
If the display does not change:
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Remove inner plenum chamber cover at 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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Check wiring for open circuit between test box sockets 40 + 41 and air conditioner system using wiring diagram.
Wire resistance: max. 1.5 Ohms
If no wiring malfunctions can be found:
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Check function of air conditioner control module.
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Check DTC memory, if necessary, repair any malfunctions and then erase DTC memory. Refer to "Clearing Trouble Codes/With Manufacturers
Scan Tool/DTC Memory Checking and Erasing" See: Testing and Inspection
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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.
Refer to "Monitors, Trips and/or Drive Cycle/Readiness Code, Displaying" See: Testing and Inspection
Refer to "Monitors, Trips and/or Drive Cycle/Readiness Code, Generating" See: Testing and Inspection