GTI L4-2.0L Turbo (BPY) (2007)
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Using a Multimeter, check the Knock Sensor terminals 1 to 2 for an internal short.
Specified value: Infinity.
If the specified value was not obtained:
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Replace the faulty Knock Sensor (KS) 1 G61 / Knock Sensor (KS) 2 G66.
If the specified value was obtained:
Checking wiring
If the manufacturers test box is being used. Perform the following step.
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Install the test box.
If the manufacturers test box is not being used. Perform the following step.
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Remove the Motronic Engine Control Module (ECM) J623.
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Using a Multimeter, Check the Knock Sensor electrical harness connector to the Motronic Engine Control Module (ECM) J623 electrical harness
connector T60 for an open circuit.
Knock Sensor (KS) 1 G61
Motronic Engine Control Module (ECM)
electrical harness connector
electrical harness connector T6
terminals
terminals or test box sockets
1
39
2
54
3
52
Knock Sensor (KS) 2 G66
Motronic Engine Control Module (ECM)
electrical harness connector
electrical harness connector T6
terminals
terminals or test box sockets
1
9
2
24
3
52
Specified value: 1.5 Ohms Max.
If the specified value was not obtained:
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Check the wiring connection for an open circuit, short circuit to Battery (+) or Ground (GND).
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Check the wiring connection for damage, corrosion, lose or broken terminals.
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If necessary, repair the faulty wiring connection.