Passat Sedan 4Motion W8-4.0L (BDP) (2002)
If indication jumps to approx. 140 degrees C:
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End diagnostic and switch ignition off.
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Replace Mass Air Flow (MAF) Sensor -G70-, item 15 .
NOTE: The Intake Air Temperature (IAT) Sensor -G42- is a component of the Mass Air Flow (MAF) Sensor -G70- and cannot be replaced
individually.
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Erase DTC memory of Engine Control Module (ECM), Diagnostic mode 4: Reset/erase diagnostic data.
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Generate readiness code. See: Testing and Inspection/Monitors, Trips, Drive Cycles and Readiness Codes
If indication remains at approx. -40 degrees C:
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End diagnostic and switch ignition off.
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Check wires according to wiring diagram.
Continuation of test if indication is approx. 140 degrees C:
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Disconnect 5-pin connector from Mass Air Flow (MAF) Sensor -G70-with Intake Air Temperature (IAT) Sensor -G42- (-1-).
If indication jumps to approx. -40 degrees C:
-
End diagnostic and switch ignition off.
-
Replace Mass Air Flow (MAF) Sensor -G70-, item 15 .
NOTE: The Intake Air Temperature (IAT) Sensor -G42- is a component of the Mass Air Flow (MAF) Sensor -G70- and cannot be replaced
individually.
-
Erase DTC memory of Engine Control Module (ECM), Diagnostic mode 4: Reset/erase diagnostic data.
-
Generate readiness code. See: Testing and Inspection/Monitors, Trips, Drive Cycles and Readiness Codes
If indication remains at approx. 140 degrees C:
-
End diagnostic and switch ignition off.
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Check wires according to wiring diagram..
Checking wiring
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Connect test box to control module wiring harness, connect test box for wiring test. See: Testing and Inspection/Reading and Clearing Diagnostic
Trouble Codes/Scan Tool Connecting/With Generic Scan Tool/Test Box, Connecting For Wiring Test
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Check wires between test box and 5-pin connector for open circuit according to wiring diagram.