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Thread: Heated Grip--left side fail

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  1. #1
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    Heated Grip--left side fail

    Hey all, my 98 R1100r left side heated grip has failed. I've got proper voltages at the rocker switch (hi-11.5v/low 9.5v) and at the wires to the element in the grip. Since buying this bike from the PO, I've had to clean/lubricate the switch internally, and only just realized that it was 3-way, as it was physically stuck from corrosion.

    I've also tested for continuity between the leads at the grip, which was good.

    So if I've got voltage and continuity through the circuit, where is the failure? I guess the one last thing to do is check the connection at the main wiring harness under the tank, correct?

    Thanks!
    Last edited by mgordon; 12-10-2012 at 06:23 PM.

  2. #2
    Registered User rxcrider's Avatar
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    Did you check resistance through both sets of grip heater leads, comparing the functional side to the non-functional side?

  3. #3
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    I did not check resistance at the other side and am loathe to since it is working perfectly, and don't want to mess with it!

  4. #4
    Registered User rxcrider's Avatar
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    Quote Originally Posted by mgordon View Post
    I did not check resistance at the other side and am loathe to since it is working perfectly, and don't want to mess with it!
    No sense of adventure, eh?
    Hopefully someone knows what they should be and can give you a value to check your failed side against.

  5. #5
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    Took the tank off, cleaned the connectors, checked for continuity and voltage and all good. Must be the grip element!

  6. #6
    Benchwrenching PGlaves's Avatar
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    Quote Originally Posted by mgordon View Post
    Took the tank off, cleaned the connectors, checked for continuity and voltage and all good. Must be the grip element!
    Well, go to the connector where the left grip plugs into the harness again. Re-verify voltage at that connection to a known good ground. Then use a continuity tester to verify the ground wire on the harness side is a good ground return path.

    Then use an Ohm meter to read the resistance from one pin on the grip side through the grip to the other pin on the grip side.

    These three tests tell what is going on.

    1. 12v at hot pin on harness side: yes or no.
    2. Ground path on harness side: yes or no.
    3. Continuity through the grip with high resistance: yes, or reading open.

    If one fails backtrack through the harness.
    If two fails then backtrack till you find where the ground is lost.
    If three fails the grip is shot.

    My guess is #2.
    Paul Glaves - "Big Bend", Texas U.S.A
    "The greatest challenge to any thinker is stating the problem in a way that will allow a solution." - Bertrand Russell
    http://www.bigbend.net/users/glaves

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