1992 Nissan-Datsun Sentra SE-RFACTORY OEM SERVICE PROCEDURE

Time Control Unit

  1. If time control function for ignition key warning, seat belt warning or wiper delay operates, time control unit power supply and ground circuits are okay. If time control function for all of these components is inoperative, turn ignition off.
  2. Time control unit is located behind left end of instrument panel. Check continuity between ground and terminal No. 15 of time control unit connector. See Fig 1 . If there is no continuity, repair ground circuit.
  3. If there is continuity, check voltage between time control unit connector terminal No. 15 and indicated terminal in the TIME CONTROL UNIT POWER SUPPLY TEST  table. If voltage is not as specified, repair appropriate circuit.
TIME CONTROL UNIT POWER SUPPLY TEST

Terminal No. Ignition Switch Position Volts
2 (1) OFF 0
2 ACC Battery
2 ON Battery
5 OFF 0
5 ACC 0
5 ON Battery
9 OFF Battery
9 ACC Battery
9 ON Battery
(1) Does not apply to 2-door hatchback and 4-door models.
Fig 1: Identifying Time Control Unit Connector Terminals
G93B01934Courtesy of NISSAN MOTOR CO., U.S.A.
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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.