A4 Sedan V6-2.8L (AFC) (1996)
Camshaft Position Sensor: Testing and Inspection
The camshaft position sensor is located on the left rear of the cylinder head, refer to "Component Locations - I "See: Fuel Delivery and Air
Induction/Locations
Checking voltage supply
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Disconnect camshaft position sensor harness connector.
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Switch Fluke 83 multimeter to 20 volt range and connect between terminal 1 (B+) and terminal 3 (GND).
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Switch ignition on.
Specified value: min. 9 volts
If the specified value is not obtained:
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Check wiring for continuity or short between camshaft position sensor and ECM using wiring diagram.
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Connect VAG 1598/19 test box to ECM harness connector.
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Check camshaft position sensor Ground (GND) wire for continuity between connector terminal 3 and engine Ground.
Specified value: 1 ohm
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Check camshaft position sensor B+ wire for continuity between connector terminal 1 and test box socket A2.
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Specified value: max. 1 ohm
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Check both wires for possible short to each other.
If the specified values are not obtained:
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Check for open or short circuit in wiring between the camshaft position sensor connector and ECM connector -A- or engine Ground (GND),
eliminate as necessary.
Camshaft position sensor
ECM connector A terminal number
connector terminal number
or engine ground (GND)
1 (B+)
A2
3 (Ground)
Engine Ground (GND)