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91 Civic LX cruise control

Discussion in '4th Generation Honda Civic (1988-1991)' started by 91LXDriver, Oct 15, 2017.



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  1. boofoo

    boofoo Respected Registered VIP

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    In the unplugged switch connector, do you see a Pink wire and a Black wire?
     
  2. boofoo

    boofoo Respected Registered VIP

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    Resoldering the main relay is a $0 fix if you have a solder iron and solder.

    Don't bother troubleshooting. Just resolder the main relay. It's a VERY COMMON problem.
     
  3. 91LXDriver

    91LXDriver New Member

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    Switch out, YES on pink wire
     
  4. 91LXDriver

    91LXDriver New Member

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    Solid pink solid black yes
     
  5. 91LXDriver

    91LXDriver New Member

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    Ready for test procedure
     
  6. boofoo

    boofoo Respected Registered VIP

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    The first test is done on the unplugged switch itself rather than the connector and engine OFF.

    Set meter to read resistance/Ohms.

    Set gear shifter to Drive position.

    What Ohm reading do you measure across the pins of the switch corresponding to the Pink and Black wires?
     
  7. 91LXDriver

    91LXDriver New Member

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  8. 91LXDriver

    91LXDriver New Member

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  9. boofoo

    boofoo Respected Registered VIP

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    Units are needed -- 0.4 Ohms. k-Ohms, or M-Ohms?

    If you don't know, post a pic of the meter reading.
     
  10. 91LXDriver

    91LXDriver New Member

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    Not sure tester has ohms, 200 - 20million
     
  11. boofoo

    boofoo Respected Registered VIP

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    The meter should be set to read on the Ohms scale, not the 200 or 20-million Ohms scale.
     
  12. 91LXDriver

    91LXDriver New Member

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    This what it reads now
     

    Attached Files:

  13. boofoo

    boofoo Respected Registered VIP

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    Okay. The switch is fine. Reconnect the switch.

    The next tests are done on the cruise control CC ECU. You need to know whether the CC ECU is receiving the correct brake pedal signals. Do you know where the CC ECU is located?
     
  14. 91LXDriver

    91LXDriver New Member

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    I don't know where the cc ecu is
     
  15. boofoo

    boofoo Respected Registered VIP

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    The first diagram below shows the location of the CC control unit for a 5th generation Civic. Check whether it's located in the same spot (behind driver's kick panel) in your 4th generation civic.

    The red circled wires in the second diagram below are the ones you need to test when you locate the CC ECU.

    pic_21.jpg



    pic_17.jpg
     
  16. 91LXDriver

    91LXDriver New Member

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    This may take me some time to locate.
     
  17. boofoo

    boofoo Respected Registered VIP

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    Look behind driver's kick panel.

    I have some work to do now, so I'll return in about an hour.
     
  18. 91LXDriver

    91LXDriver New Member

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    We have to pick this up later, like Monday, I work tonight at 5pm...
     
  19. boofoo

    boofoo Respected Registered VIP

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    :thumbup:
     
  20. 91LXDriver

    91LXDriver New Member

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    Is this the cc ecu, found this near the gas pedal.....can't find any info on what it is so thinking it's what you wanted me to locate
     

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