Note: The ability to adjust the ignition timing settings is only available on 1993 and 1994 models. On 1995 and later models, the ignition timing cannot be adjusted, but checking it allows you to assess the proper functioning of the ignition control system.
1. With the ignition off, connect the strobe light according to the manufacturer's instructions. On 1993 and 1994 models, the strobe light's inductive receiver is connected to the high-voltage wire of the #1 spark plug. On 1995 and later models, a special loop is provided in the wiring harness of the appropriate ignition coil for connecting the strobe light's inductive receiver.
Note: If the design of the strobe light does not allow it to be connected to the high-voltage wiring loop, remove the coil of the first spark plug. Restore the original wiring connection, connect the spark plug wire between the coil and the spark plug, and connect the strobe light to it.
2. Set the parking brake, chock the rear wheels of the vehicle and shift the transmission to position "P" or "N".
3. Locate the timing marks on the crankshaft pulley (the pointer is fixed on the timing belt cover). The TDC mark on the pulley is highlighted in yellow. On 1993 and 1994 models, the pitch of the marks on the pulley is 5°, the TDC mark is the one on the far left. Find the mark 15° before TDC. If necessary, wipe the pulley for better visibility.
4. Start the engine and warm it up to normal operating temperature (the upper radiator hose should be hot to the touch). Make sure that the engine idle speed is set correctly (see Chapter Engine management systems). Raise the revs to 2000 rpm, then lower them back to idle.
5. Direct the strobe light at the crankshaft pulley and check the ignition timing (the corresponding mark will be located motionless opposite the pointer).
6. On 1993 and 1994 models, if necessary, loosen the distributor mounting clamp bolt and, by rotating the distributor housing, make the appropriate adjustment of the ignition timing angle. Tighten the bolt securely and repeat the check.
7. On models produced since 1995, if the ignition timing is not set correctly, check the proper functioning of the crankshaft and camshaft position sensors (see Chapter Engine management systems). If the sensors are OK, take the vehicle to a service station for diagnostics and repair of the PCM.
[Information copied from the website nissanbook.ru]
8. Turn off the engine and disconnect the strobe light.