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1985 ASPECADE SPEEDOMETER PROBLEM

1239 Views 4 Replies 3 Participants Last post by  tricky
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HEY GUYS GOT A 85 ASPENCADE SPEEDOMETER THAT HAS STOPPED WORKING ,IN SPRING I TRACED IT TO THE CONNECTION BEHIND THE CLUSTER , THEN RECENTLY IT STOPPED , CHECK CONNECTOR AGAIN BUT TO NO AVAIL ,CHECKED FOR POWER TO THE TRANSDUCER , OK ,2.38 VOLTS , ANY OTHER TESTS ANYONE MAY HAVE?
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Take off the transducer off the speedometer gear and see if the little tab turns with the front wheel. Stick a small flat blade screwdriver in the transducer and turn it an see if the speedo reacts.
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checked that too the wheel turns but the speedo dosent react , if u unplug the connector under the tank and plug it back in the speedo reacts iam thinking the sensor is bad ,but want to know how to test the sensor , any body know of any scematics
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The GL1200 service manual should have step by step instructions on testing the speedo electronics. As far as fixing the transducer, fuggetaboutit, it is epoxy filled to keep moisture from attacking the electronics.
imported post

Disconnect the speed sensor from the speedometer gearbox at the front wheel.
Connect a voltmeter across the Black/Brown and
Black/Yellow terminals of the sensor white 3-P coupler.
Turn the ignition switch to ON.
The sensor is normal if the voltmeter needle swings from
0 to about 5 slowly eight times when the sensor drive
shaft is turned slowly one full turn.

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