volkswagen Workshop Repair Guides

Volkswagen Workshop Service and Repair Manuals

Accelerator Pedal Position Sensor|Testing and Inspection|Page 2460 > < Fuel Temperature Sensor|Testing and Inspection|Page 2455
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Accelerator Pedal Position Sensor: Testing and Inspection

Diagnostic Procedures

Throttle Position Sensor/Accelerator Pedal Position Sensor 2, Checking

Observe all safety precautions: --> [ Safety Precautions ] 

View clean working conditions: --> [ Clean Working Conditions ] 

Perform a preliminary check to verify the condition: --> [ Preliminary Check ] See: Computers and Control Systems/Testing and Inspection/Scan Tool
Testing and Procedures/Preliminary Check.

Special tools, testers and auxiliary items required

‹› multimeter.

‹› Wiring diagram

Test requirement

‹› 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.

‹› Vehicles with automatic transmission, shift selector lever into position " P" or "N".

‹› A/C switched off.

‹› Ground connections between engine/transmission/chassis OK.

‹› Use only gold-plated terminals when servicing the electrical harness connector terminals in Throttle Position (TP) Sensor (G79)/Accelerator Pedal

Position Sensor 2 (G185).

Start diagnosis

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Disconnect the Throttle Position Sensor (G79)/Accelerator Pedal Position Sensor 2 (G185) 6 pin electrical harness connector.

Checking voltage supply and wiring

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Switch the ignition ON.

-

Using a multimeter, check the following wiring connections for voltage. 

-

Switch the ignition OFF.

If the specified value was Not obtained:

Checking wiring 

If the manufacturers test box is being used, perform the following step.

-

Install the test box. 

If the manufacturers test box is not being used, perform the following step.

Accelerator Pedal Position Sensor|Testing and Inspection|Page 2460 > < Fuel Temperature Sensor|Testing and Inspection|Page 2455