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Accelerator Pedal Position Sensor|Testing and Inspection|Page 2539 > < Valve Clearance|Specifications
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Accelerator Pedal Position Sensor: Testing and Inspection

Throttle Position Sensor, Checking

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

‹› Ignition off

Test procedure

-

Perform a preliminary check to verify the customers complaint. Refer  to --> [ Preliminary Check ] See: Testing and Inspection/Scan Tool Testing
and Procedures/Preliminary Check

Start diagnosis

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

Test sequence

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Remove the drivers side storage compartment.

-

Disconnect the Throttle Position (TP) Sensor (G79) 6-pin electrical harness connector.

Checking voltage supply and wiring

-

Switch the ignition on.

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

Accelerator Pedal Position Sensor|Testing and Inspection|Page 2539 > < Valve Clearance|Specifications