Camshaft Position Sensor: Testing and Inspection

CAMSHAFT POSITION (CMP) SENSOR INSPECTION [LF]

NOTE:
- Before performing the following inspection, make sure to follow the procedure as indicated in the troubleshooting flowchart. Description and Operation

Visual Inspection

1. Remove the battery cover.

2. Disconnect the negative battery cable. (See Removal and Replacement.)

3. Remove the CMP sensor. Service and Repair

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

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

Voltage Inspection

1. Install all removed parts.

2. Measure the CMP sensor output wave pattern using an oscilloscope. Component Tests and General Diagnostics

- If not within the specification, replace the CMP sensor. Service and Repair
- If the monitor item condition/specification (reference) is without the specification, even though the CMP sensor output wave pattern is within the specification, carry out the "Circuit Open/Short Inspection".

Circuit Open/Short Inspection









1. Disconnect the PCM connector. Service and Repair

2. Inspect the following wiring harnesses for an open or short circuit. (Continuity Inspection)

Open circuit

- If there is no continuity, the circuit is open. Repair or replace the wiring harness.

- CMP sensor terminal A and PCM terminal 2P
- CMP sensor terminal B and PCM terminal 2S
- CMP sensor terminal C and PCM terminal 2AM

Short circuit

- If there is continuity, the circuit is shorted. Repair or replace the wiring harness.

- CMP sensor terminal A and power supply
- CMP sensor terminal B and power supply
- CMP sensor terminal B and body ground
- CMP sensor terminal C and body ground