Jetta Sedan L4-2.0L (BBW) (2005)
Exhaust Temperature Sensor: Testing and Inspection
Sensor For Exhaust Temperature, Checking (vehicles With Engine Code BBW)
NOTE:
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Vehicle must be raised before connector for sensor for exhaust temperature is accessible.
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When servicing terminals in harness connector of sensor for exhaust temperature, use only gold-plated terminals.
Recommended special tools and equipment
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V.A.G 1526 multimeter or V.A.G 1715 multimeter
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V.A.G 1594 connector test kit
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Wiring diagram
Requirements
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The respective fuses of Motronic Engine Control Module (ECM) -J220- must be OK.
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Fuel Pump (FP) relay -J17- must be OK, check:
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Battery voltage must be at least 11.5 Volts.
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All electrical consumers such as, lights and rear window defroster must be switched off.
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Parking brake must be engaged or else daylight driving lights will be switched on.
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If vehicle is equipped with an A/C system, it must be switched off.
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Ground (GND) connections between engine and chassis must be OK.
Work sequence
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Remove protective cover -1- and disconnect 2-pin harness connector (black) -2- from Exhaust Gas Temperature (EGT) sensor 1 -G235-.