A4 Quattro Wagon V6-2.8L (AHA) (1998)
Camshaft Position Sensor: Testing and Inspection
Camshaft Position (CMP) Sensor 1 -G40-, Checking
Camshaft Position (CMP) Sensor -G40-, Checking
NOTE:
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Camshaft Position (CMP) sensor -G40- is located on the front of the right cylinder head (bank 1).
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Checking -G163-. See: Camshaft Position (CMP) Sensor 2 -G163-, Checking
Required special tools and test equipment
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VAG1598/22 test box
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Multimeter US1119 (Fluke 83 or equivalent)
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VW1594 connector test kit
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Wiring diagrams
Checking
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Disconnect 3-pin harness connector from Camshaft Position (CMP) sensor -G40-.
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Connect multimeter US1119 (Fluke 83 or equivalent) to measure voltage across CMP connector terminals 1 (B+) and 3 (Ground), using adapters
from VW1594 connector test kit.
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Switch ignition on.
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Measure voltage between terminals 1 and 3.
Specified value: 9-14.5 volts
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Switch ignition off.
If voltage is OK:
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Connect VAG1598/22 test box to Motronic ECM harness connector. Refer to "Scan Tool Testing/Scan Tool Connecting and Initial
Checks/Connecting VAG 1598/22 Test Box" See: Powertrain Management/Computers and Control Systems/Testing and Inspection
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Check wiring for open circuit between ECM/test box and 3-pin harness connector, according to wiring diagram.
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Connector terminal 1 to ECM/test box socket 11
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Connector terminal 2 to ECM/test box socket 44
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Connector terminal 3 to ECM/test box socket 14
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Specified value: max. 1.5 Ohms