1994 Nissan-Datsun Sentra SE-R, AutomaticFACTORY 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 and Fig 2 . If there is no continuity, repair ground circuit. If there is continuity, go to next step.
  3. Check voltage between time control unit connector terminal No. 15 and indicated terminals. See 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
ACC Battery
ON Battery
5
OFF 0
ACC 0
ON Battery
9
OFF Battery
ACC Battery
ON Battery
(1) Except Sentra 4-door.
NOTE: Some time control unit connectors may have more terminals than shown. See Fig 1 and Fig 2 .
Factory Service Tools

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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.

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