A4 Quattro Wagon V6-3.0L (AVK) (2002)
If display zone 3 shows an implausible value:
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Disconnect connector -2- at Engine Coolant Temperature (ECT) sensor -G2-/-G62-.
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Connect multimeter between terminals C and D of sensor to measure resistance.
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Range A shows resistance values for temperature range 0 to 50 degree C and range B shows the values for temperature range 50 to 100 degree C.
Sample readings:
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30 degree C corresponds to a resistance of 1500 to 2000 Ohms.
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80 degree C corresponds to a resistance of 275 to 375 Ohms
If specified value is not attained:
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Replace engine coolant temperature sensor.
If specified value is attained:
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Connect test box VAG1598/31 to wiring harness for engine control module; do not connect engine control module. See: Testing and
Inspection/Scan Tool Testing and Procedures/Scan Tool Testing/Scan Tool Connecting and Initial Checks/Wiring and Component Testing Using
VAG1598/31 Test Box