Contents: Examination ⇓ Replacement (N₂ sensor) ⇓
Crankshaft/Camshaft Position Sensors
The crankshaft/camshaft position sensors on some models are located in this housing on the ignition distributor (arrow).
Connectors for connecting crankshaft/camshaft position sensors
1. Not used
2. Not used
3. Crankshaft position sensor mounted on the cylinder block
4. Camshaft position sensor for 1998 Mazda models
Examination
Sensor N1 (located on the ignition distributor)
1. Remove the ignition distributor and reconnect the larger of the two connectors.
2. Connect a voltmeter to the CKP1 and GRD terminals. Rotate the distributor shaft and check that the voltmeter needle deflects four times per full revolution on four-cylinder models and six times on six-cylinder models.
3. Replace the sensor if it is faulty.
₂ sensor (located on the cylinder block)
4. Measure the gap between the sensor (indicated by the arrow) and a toothed wheel on the crankshaft. It should be 0.5–1.5 mm.
5. Check that the resistance between terminals A and B of the sensor connector is approximately 550 ohms. Replace the sensor if necessary.
Replacement (N₂ sensor)
1. Disconnect the negative battery cable.
2. Disconnect the sensor connection connector, unscrew the mounting bolts and remove the sensor.
3. Installation is carried out in the reverse order of removal.