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Eos (1F7) V6-3.2L (BUB) (2008)

Sensors and Switches > Sensors and Switches - Powertrain Management > Sensors and Switches - Computers and Control Systems > Engine Speed Sensor > Component Information > Locations > Page 1033

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Engine Speed Sensor: Testing and Inspection

Engine Speed Sensor G28, Checking

‹› Use only gold-plated terminals when servicing terminals in the electrical harness connector of the Engine Speed (RPM) Sensor (G28 ).

Special tools, testers and auxiliary items required

‹› Multimeter.

‹› Wiring diagram.

Test requirements

‹›  The 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 switched off.

Function

The Engine Speed (RPM) Sensor (G28) detects RPM and reference marks. Without an engine speed signal, the engine will not start. If the engine
speed signal fails while the engine is running, the engine will stop immediately.

Test procedure

-

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

Function test

-

Connect the scan tool.

-

Switch the ignition on.

-

Using the scan tool, check the engine speed:

-

End diagnosis and switch ignition off.

If the specified value was not obtained:

Checking internal resistance

-

Disconnect the gray Engine Speed (RPM) Sensor ( G28) electrical harness connector - arrow -.

Sensors and Switches > Sensors and Switches - Powertrain Management > Sensors and Switches - Computers and Control Systems > Engine Speed Sensor > Component Information > Locations > Page 1033

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