GTI L4-2.0L Turbo (BPY) (2007)
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Disconnect the gray Engine Speed (RPM) Sensor G28 electrical harness connector -5-
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Using a multimeter, check the Engine Speed (RPM) Sensor G28 terminals 2 to 3 -B- for resistance.
Specified value: 730 to 1000 Ohms (at approx. 20 degrees C)
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Using a multimeter, check the Engine Speed (RPM) Sensor G28 terminals 2 to 3 -B- for resistance.
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Check Engine Speed (RPM) Sensor G28 terminals 1 to 2 and 1 to 3 for short circuits.
Specified value: infinity
If any of the specified values are not obtained:
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Replace the Engine Speed (RPM) Sensor G28.
If the specified values are 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 Engine Speed (RPM) Sensor G28 electrical harness connector terminals to the Motronic Engine Control Module
(ECM) J623 electrical harness connector T60 terminals for an open circuit.
Engine Speed (RPM) Sensor
Motronic Engine Control Module (ECM) J623
G28 electrical harness
electrical connector T60
connector terminals
terminals or test box socket
1
52
2
51
3
36
Specified value: 1.5 Ohms Max.
If the specification was not obtained:
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Check the wiring for a short circuit to each other, Battery (+), and Ground (GND).
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Check the electrical harness connector for damage, corrosion, lose or broken terminals.
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If necessary, repair the faulty wiring connection.