#
CAMSHAFT POSITION (CMP) SENSOR INSPECTION [MZR-CD (RF Turbo)]

BME014018230W03

  Note

  • Perform the following test only when directed.

  Caution

  • When foreign material, such as iron chips, gets on the CMP sensor, it can cause abnormal output from the sensor because of flux turbulence and adversely affect engine control. Be sure there is no foreign material on the CMP sensor when replacing.
  • Do not forcefully pull the wiring harness of the CMP sensor. Doing so will break the harness.

## Visual Inspection

1. Verify that the CMP sensor and the pulsar are free of any metallic shavings or particles.

  • If any are found on the CMP sensor and the pulsar, clean them off.

## Air Gap Inspection

1. Disconnect the negative battery cable.

2. Remove the gear cover.

3. Verify that clearance A between the CMP sensor and the pulsar is within the specification.

  • If not as specified, replace the CMP sensor.

Clearance A

  0.5-1.5 mm {0.020-0.059 in}

## Resistance Inspection

1. Disconnect the negative battery cable.

2. Remove the engine cover.

3. Disconnect the CMP sensor connector.

4. Inspect the resistance between the terminals under the following condition.

  • If not as specified, replace the CMP sensor.

Specification

Terminal | Atmospheric temperature (°C {°F}) | Resistance (kilohm)
--- | --- | ---
A-B | 20 {68} | 1.85-2.45

## Circuit Open/Short Inspection

1. Inspect for open/short circuit in the following wiring harnesses.

  • if there is open/short circuit, repair or replace wiring harnesses.

### Open circuit

  • CMP sensor terminal A and PCM terminal 81
  • CMP sensor terminal B and PCM terminal 55

### Short circuit

  • CMP sensor terminal A and PCM terminal 81 to GND
  • CMP sensor terminal B and PCM terminal 55 to GND