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Accelerator Pedal Position Sensor|Testing and Inspection|Page 3470 > < How to Find Wiring Diagrams|Page 3465
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Accelerator Pedal Position Sensor: Testing and Inspection

Throttle Position (TP) Sensor G79 / Accelerator Pedal Position Sensor 2 G185, Checking

Special tools, testers and auxiliary items required

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Multimeter.

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Wiring diagram

Test requirement

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The Motronic Engine Control Module (ECM) J623 fuses OK.

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Battery voltage at least 12.5 Volts.

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All electrical consumers such as, lights and rear window defroster, switched off.

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

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A/C switched off.

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Ground (GND) connections between engine/transmission/chassis OK.

NOTE:  Use only gold-plated terminals when servicing the electrical harness connector terminals in Throttle Position (TP) Sensor G791 
Accelerator Pedal Position Sensor 2 G185.

Test sequence

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Remove the drivers side storage compartment.

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

Checking voltage supply and wiring

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Switch the ignition on.

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

Throttle Position (TP) Sensor

Specified value

G79 / Accelerator Pedal
Position Sensor 2 G185
electrical harness connector    

Accelerator Pedal Position Sensor|Testing and Inspection|Page 3470 > < How to Find Wiring Diagrams|Page 3465