ECCENTRIC SHAFT POSITION SENSOR INSPECTION

Note

• Before performing the following inspection, make sure to follow the troubleshooting flowchart. (See Troubleshooting Procedure.)

Visual Inspection

1. Remove the eccentric shaft position sensor.

2. Verify that there are no metal shavings on the sensor.

• If the monitor item condition (reference) is not within the specification even though there is no malfunction, perform the "Circuit Open/Short Inspection".

Resistance Inspection

1. Disconnect the eccentric shaft position sensor connector.

2. Measure the coil resistance between eccentric shaft position sensor terminals A and B.

• If not within the specification, replace the eccentric shaft position sensor.

• If the monitor item condition/specification (reference) is not within the specification, even though the eccentric shaft position sensor resistance is within the specification, perform the "Circuit Open/Short Inspection" and repair or replace the malfunctioning part.

Eccentric shaft position sensor resistance

950-1,250 ohms (at room temperature)

Circuit Open/Short Inspection

1. Disconnect the PCM connector.

2. Disconnect the eccentric shaft position sensor connector.

3. Inspect the following wiring harnesses for open or short circuit. (Continuity inspection)

Open circuit

• If there is no continuity in the following wiring harnesses, there is an open circuit. Repair or replace the wiring harness.

– Eccentric shaft position sensor terminal A and PCM terminal 2U

– Eccentric shaft position sensor terminal B and PCM terminal 2X

Short circuit

• If there is continuity in the following wiring harnesses, there is a short circuit. Repair or replace the wiring harness.

– Eccentric shaft position sensor terminal A and body ground

– Eccentric shaft position sensor terminal A and power supply

– Eccentric shaft position sensor terminal B and body ground

– Eccentric shaft position sensor terminal B and power supply