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Home >> Nissan-Datsun >> 1985 >> Sentra SE, Standard >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Wiper/Washer Systems >> Testing >> Time Control Unit Test >> Intermittent Circuit

Intermittent Circuit

  1. Connect negative lead of voltmeter to pin 2 and positive lead to pin 12. Turn ignition "OFF" and set wiper switch to "OFF". Battery voltage should be present. Turn wiper switch to "INT". No voltage should be read. If readings are incorrect, check harness and wiper switch.
  2. Connect negative lead of voltmeter to pin 15 and positive lead to pin 1 (positive lead to pin 15 and negative lead to pin 2 on 300ZX). Turn ignition to "ACC" and wiper switch to "INT". Voltage will vary from 0-12v every 2 to 15 seconds.
  3. Replace time control unit if it does not operate as described. If voltage does not vary, check wiring harness and wiper relay.
  4. Connect negative lead of voltmeter to pin 2 and positive lead to pin 16. Turn ignition to "ACC" and wiper switch "ON". Rotate delay adjustment knob at end of wiper lever. Voltage should vary from 0 (short delay) to 8 volts (long delay).
  5. If wiper delay cannot be adjusted, but voltage is as described, replace time control unit. If voltage readings are incorrect, check harness and wiper switch.
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