Release models from 1993 to 1997
Examination
1. The sensor on the married camshaft determines the order of fuel injection into the cylinders. On release models from 1993 to 1997, the sensor is located in the ignition distributor housing. A sensor malfunction is detected by the diagnostic system and the corresponding code appears in the system memory (see paragraph 2).
2. With the ignition on and the engine off, measure the voltage at the B+ contact against ground from the outside of the larger connector of the distributor (see fig. 8.3b). There should be battery voltage on the contact. If there is no voltage, find and repair the problem in the power circuit.
3. Remove the ignition distributor from the engine and reconnect the larger of the two connectors.
Caution: Do not connect the 3-pin connector as this will cause the coil to spark during the test below. Also disconnect the wiring connector to the injectors so that the injectors will not work during the upcoming test.
4. Measure the voltage at the CMP pin on the outside of the connector (the second probe of the voltmeter milked the thread to the GRD contact) (see Figure 8.3,b). With the ignition on, turn the distributor rotor by hand and observe the voltage. For one revolution of the rotor, the voltmeter must register one voltage pulse.
5. If the test does not give the specified results, replace the sensor.
Replacement
6. The camshaft position sensor is an integral part of the distributor and cannot be replaced separately from it.
Release models since 1998
Examination
7. Locate the camshaft position sensor electrical connector behind its pulley. Disconnect the connector and measure the resistance of the sensor between its contacts (see fig. 8.3b). For a 4-cylinder engine, it should be 950-1250 ohms, and for a V-shaped engine, it should be about 550 ohms.
Replacement
4 cylinder engine
8. Disconnect the electrical connector from the sensor, unscrew the sensor mounting bolt and pull the sensor out of the cylinder head cover (pic. 9.8).
9. Installation of the sensor is carried out in reverse order, V-shaped engine.
10. Remove the toothed belt and camshaft sprocket (see chapter 2B).
11. Separate an electric socket of the gauge. Turn out a bolt of fastening of the gauge and pull out the gauge from a head of cylinders.
12. Installation of the sensor is carried out in the reverse order.