Q7 Quattro V6-3.6L (BHK) (2007)
Camshaft Position Sensor: Testing and Inspection
Camshaft Position (CMP) Sensor G40 And Camshaft Position (CMP) Sensor 2 G163, Checking
The following procedure is used to diagnose Camshaft Position (CMP) Sensor G40 and Camshaft Position (CMP) Sensor 2 G163
NOTE: Use only gold-plated terminals when servicing terminals in harness connectors of Camshaft Position (CMP) Sensor G40 and Camshaft Position
(CMP) Sensor 2 G163
Special tools, testers and auxiliary items required
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Multimeter.
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Wiring diagram.
Test requirements
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The Engine Control Module (ECM) J623 fuses OK.
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Battery voltage at least 12.5 volts.
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All electrical consumers such as, lights and rear window defroster, switched off.
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Vehicles with automatic transmission, shift selector lever into position "P" or "N".
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A/C switched off.
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Ground (GND) connections between engine/transmission/chassis OK.
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Ignition switched off.
Test procedure
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Perform a preliminary check to verify the customers complaint. See: Computers and Control Systems/Testing and Inspection/Initial Inspection
and Diagnostic Overview/Preliminary Check
Start diagnosis
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Disconnect the Camshaft Position (CMP) Sensor G40 -1 - electrical harness connector. Or
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Disconnect the Camshaft Position (CMP) Sensor 2 G163 - 2 - electrical harness connector.
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Switch the ignition on.
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Using a Multimeter, Check the Camshaft Position (CMP) Sensor G40, or G163 electrical harness connector terminals 1 to 3 for voltage.
Specified value: about 5.0 V
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Switch the ignition off.
If the specification was not obtained:
Checking wiring