S4 V8-4.2L (BHF) (2004)
Camshaft Position Sensor: Testing and Inspection
Signal Wire, Checking
Signal Wire, Checking
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Connect multimeter for voltage measurement as follows:
Harness connector Terminal
Measure to
2
Engine Ground (GND)
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Switch ignition on.
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Specified value: approx. battery voltage
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Switch ignition off.
Checking Ground (GND) wire
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Connect multimeter for voltage measurement as follows:
Harness connector Terminal
Measure to
3
B+
Specified value: about 10 V
If all specified values are being reached and the LED does not blink (measured between terminal 1 and 2 with starter and connector connected):
-
Replace Camshaft Position (CMP) sensor.
If specified values are not obtained:
Checking wire connections between Camshaft Position (CMP) sensor and Engine Control Module (ECM)
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Connect test box to wiring harness of Engine Control Module (ECM), ECM is not connected. See: Powertrain Management/Computers and
Control Systems/Testing and Inspection/Reading and Clearing Diagnostic Trouble Codes/Scan Tool Connecting/Test Box, Connecting For Wiring
and Component Test
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Check the following wire connections for open circuit according to wiring diagram.