A8L Quattro Sedan W12-6.0L (BSB) (2005)
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End diagnosis and switch ignition off.
If intake air temperature does not drop:
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Replace corresponding Mass Air Flow sensor with Intake Air Temperature sensor.
‹› Intake Air Temperature sensors are components of Mass Air Flow sensor and cannot be replaced individually.
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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.
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Generate readiness code => [ Readiness Code, Generating ] See: Computers and Control Systems/Testing and Inspection/Monitors, Trips, Drive
Cycles and Readiness Codes.
°Continuation of Test If Indication is Approx. -40 C:
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Disconnect corresponding 5-pin connector from Mass Air Flow (MAF) sensor with Intake Air Temperature (IAT) sensor to be tested.
‹› 5-pin connector - arrow - from Mass Air Flow (MAF) sensor (G70) with cylinder bank 1 Intake Air Temperature (IAT) Sensor (G42).
‹› Cylinder bank 1 with cylinders 1 through 6 is located at right in direction of travel.
‹› Mass Air Flow (MAF) sensor (G70) with cylinder bank 1 Intake Air Temperature (IAT) Sensor (G42) is located left in direction of travel.
‹› 5-pin connector - 1 - from Mass Air Flow (MAF) sensor 2 (G246) with cylinder bank 2 Intake Air Temperature (IAT) Sensor 2 (G299).