A8L Quattro Sedan W12-6.0L (BSB) (2005)
1
Knock Sensor 3 (G198)
Color identification: brown
f
For exhaust bank 3 of cylinders 7, 8 and 9
2
Knock sensor 4 (G199)
Color identification: black
f
For exhaust bank 4 of cylinders 10, 11 and 12
Cylinder bank 1 and 2
‹› Before disconnecting harness connectors, mark allocation to component.
‹› Cylinder bank 1 with cylinders 1 through 6 is located at right in direction of travel.
‹› Cylinder bank 2 with cylinders 7 through 12 is located at left in direction of travel.
Checking resistances
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Check resistance between terminals 1 + 2, 1 + 3 and 2 + 3 at the connections to the respective knock sensors. Specification: infinite ohms
If specification is not obtained:
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Replace respective knock sensor:
‹› Knock sensors 1 and 2 for cylinder bank 1
‹› Knock sensors 3 and 4 for cylinder bank 2.
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Erase DTC memory of Engine Control Module => [ Diagnostic Mode 04 - Erase DTC Memory ] See: Computers and Control Systems/Testing
and Inspection/Scan Tool Testing and Procedures/Diagnostic Modes 01 - 09, Diagnostic mode 4: Reset/erase diagnostic data.