#
CRANKSHAFT POSITION (CKP) SENSOR INSPECTION [MZR-CD (RF Turbo)]

BME014011430202

  Note

  • Perform the following test only when directed.

  Caution

  • When foreign material, such as iron chips, gets on the CKP 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 CKP sensor when replacing.
  • Do not forcefully pull the wiring harness of the CKP sensor. Doing so will break the harness.

## Visual Inspection

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

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

## Air Gap Inspection

1. Disconnect the negative battery cable.

2. Remove the crankshaft pulley. (See TIMING BELT REMOVAL/INSTALLATION [MZR-CD (RF Turbo)].)

3. Remove the crankshaft pulley. (See TIMING BELT REMOVAL/INSTALLATION [MZR-CD (RF Turbo)].)

4. Verify that clearance A between the CKP sensor and the pulsar is within the specification.

  • If not as specified, replace the CKP sensor.

Clearance A

  1.5-2.5 mm {0.059-0.098 in}

## Resistance Inspection

1. Disconnect the negative battery cable.

2. Disconnect the CKP sensor connector.

3. Measure the resistance between the CKP sensor terminals under the following condition.

  • If not as specified, replace the CKP sensor.

Specification

Terminal | Atmospheric temperature °C {°F} | Resistance (kilohm)
--- | --- | ---
A-B | 20 {68} | 1.8-2.45

## 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

  • CKP sensor terminal A and PCM terminal 29
  • CKP sensor terminal B and PCM terminal 3

### Short circuit

  • CKP sensor terminal A and PCM terminal 29 to GND
  • CKP sensor terminal B and PCM terminal 3 to GND