Models produced from 1993 to 1997
Examination
1. The camshaft position sensor determines the order of fuel injection into the cylinders. On models produced from 1993 to 1997, the sensor is located in the ignition distributor housing. A sensor malfunction is detected by the diagnostic system and a corresponding code appears in the system memory (see paragraph 2).
2. With the ignition on and the engine not running, measure the voltage at the B+ contact relative to ground on the outside of the larger distributor connector (see Figure 8.3,b). There should be battery voltage at the contact. If there is no voltage, find and fix the problem in the power supply 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 generate a spark during the test below. Also disconnect the wiring connector to the injectors so that the injectors will not operate during the upcoming test.
4. Measure the voltage at the CMR contact on the outside of the connector (the second probe of the voltmeter is connected to the GRD contact) (see Fig. 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 should register one voltage pulse.
5. If the test does not produce 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.
Models produced since 1998
Examination
7. Locate the camshaft position sensor electrical connector behind the camshaft position sensor pulley. Disconnect the connector and measure the resistance of the sensor between its contacts (see Figure 8.3,b). For a 4-cylinder engine it should be 950-1250 ohms, and for a V-shaped engine - 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 (figure 9.8).
9. The sensor is installed in reverse order, V-shaped engine.
10. Remove the timing belt and camshaft sprocket (see chapter 2B).
(The original text is published on: MazBook.ru)
11. Disconnect the sensor electrical connector. Loosen the sensor mounting bolt and remove the sensor from the cylinder head.
12. The sensor is installed in reverse order.