Passat Syncro Wagon V6-2.8L (ATQ) (2000)
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Press -> button.
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Press buttons -0- and -6- to select "End Output" function 06. Press -Q- button to confirm input.
Continuation of test if indication is approx. -48°C:
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Pull 4-way connector off Engine Coolant Temperature (ECT) sensor -G62-.
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Connect together terminals 3 + 4 of connector using auxiliary wires from VAG 1594, and observe what is indicated on display.
If indication jumps to approx. 143°C:
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Press -> button.
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Press buttons -0- and -6- to select "End data transfer" function 06. Press -Q- button to confirm input.
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Switch ignition off.
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Replace Engine Coolant Temperature (ECT) sensor -G62-.
If indication remains at approx. -48°C:
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Press -> button.
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Press buttons -0- and -6- to select "End data transfer" function 06. Press -Q- button to confirm input.
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Switch ignition off.
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Check wires (see wiring diagram)
Continuation of test if indication is approx. 143°C:
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Pull 4-way connector off Engine Coolant Temperature (ECT) sensor -G62-.
If indication jumps to approx. -48°C:
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Press -> button.
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Press buttons -0- and -6- to select "End data transfer" function 06. Press -Q- button to confirm input.
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Switch ignition off.
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Replace Engine Coolant Temperature (ECT) sensor -G62-.
If indication remains at approx. 143°C:
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Press -> button.
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Press buttons -0- and -6- to select "End data transfer" function 06. Press -Q- button to confirm input.
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Switch ignition off.
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Check wires (see wiring diagram)
Checking wires
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Connect VAG 1598/31 test box to control module wiring harness. Engine Control Module (ECM) is not connected.
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Pull 4-way connector off Engine Coolant Temperature (ECT) sensor -G62-.