Jetta SportWagen L4-2.0L DSL Turbo (CBEA) (2009)
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Turbo Boost Sensor: Testing and Inspection
Charge Air Pressure Sensor, Checking
Diagnostic Procedures
Charge Air Pressure Sensor, Checking
Observe all safety precautions: --> [ Safety Precautions ]
View clean working conditions: --> [ Clean Working Conditions ]
Prior to repair work, perform a preliminary check to verify the condition. Refer to --> [ Preliminary Check ] See: Powertrain Management/Computers
and Control Systems/Testing and Inspection/Scan Tool Testing and Procedures/Preliminary Check.
‹› The Charge Air Pressure Sensor and IAT Sensor are combined and must be replaced as a unit.
‹› Use only gold-plated terminals when servicing terminals in the electrical harness connector of the IAT sensor (G42).
Special tools, testers and auxiliary items required
‹› Multimeter.
‹› Wiring diagram.
Test requirements
‹› The Motronic Engine Control Module (ECM) (J623) fuses OK.
‹› Battery voltage at least 12.5 volts.
‹› All electrical consumers such as, lights and rear window defroster, switched off.
‹› On vehicles with automatic transmission, selector lever in position " P" or "N".
‹› A/C switched off.
‹› Ground connections between engine/transmission/chassis OK.
‹› Ignition switched off.
Test procedure
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Perform a preliminary check to verify the customers complaint. Refer to --> [ Preliminary Check ] See: Powertrain Management/Computers and
Control Systems/Testing and Inspection/Scan Tool Testing and Procedures/Preliminary Check
Start diagnosis
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Remove the engine cover.
Test sequence
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Disconnect the Charge Air Pressure Sensor/IAT sensor (G31/G42) electrical harness connector.
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Turn ON the ignition switch.
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Using a multimeter, check the Charge Air Pressure Sensor/IAT sensor (G31/G42) electrical harness connector terminals 1 to 3 for voltage.
Specified value: Near 5 V
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Using a multimeter, check the Charge Air Pressure Sensor/IAT sensor (G31/G42) electrical harness connector terminals 1 to 4 for voltage.
Specified value: Min. 4.40 V
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Switch the ignition off.