019-038   Engine Position Sensor (EPS)

Remove

TOC

Disconnect the sensor from the engine harness.

Use engine position sensor tool, Part Number 3822747, to loosen the engine position sensor (EPS).

Remove the EPS from the cylinder block.

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Inspect for Reuse

TOC

Inspect the engine position sensor for debris, cracked or chipped potting, extruded potting, and damage from contact with the cam gear.

If there is debris on the engine position sensor, clean the sensor.

If the sensor is chipped, cracked, extruded, or damaged, replace the sensor with a new one.

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Install

TOC

Install a new o-ring onto the engine position sensor.

Install the new sensor into the mounting hole in the cylinder block
(gear housing on M11 engines).

Tighten the EPS with the installation tool, Part Number 3822747.

Torque Value:  20  n.m  [177 in-lb]

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Connect the sensor to the sensor harness. Push the connectors together until they lock.

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Resistance Check

TOC

Separate the four-way connector. Lift the tab and pull the connector apart. Install a mating connector with short test leads on the sensor connector.

NOTE: The purpose of installing a mating connector is to allow the electrical leads of the sensor to be softly flexed to check for damaged or partially broken wire strands under the insulation.

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Use a multimeter to measure the resistance between pin B and pin C, the two inner pins. The multimeter

must measure between 1000 and 2000 ohms.

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Measure the resistance between pin A and pin D, the outer two pins. The multimeter

must measure between 1000 and 2000 ohms. If both resistance values are within the specifications, the sensor

must
still be checked for a short circuit to ground and a short circuit between coils.

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Check for Short Circuit to Ground

TOC

Measure the resistance from pin A to the engine block ground. The multimeter

must show an open circuit (10M ohms or more).

NOTE: The open-circuit specification (10M ohms) for the engine position sensor is higher than the open-circuit specification used throughout the manual due to the sensitivity of the engine position sensor.

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Measure the resistance from pin B to the engine block ground. The multimeter

must show an open circuit (10M ohms or more).

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Check for Short Circuit from Pin to Pin

TOC

Measure the resistance from pin A to pin B. The multimeter

must show an open circuit (10M ohms or more). If any of the previous resistance checks are

not within specifications, the sensor has failed. Replace the sensor.

Connect all components when the repair is complete.

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Last Modified:  10-Feb-2003

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