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1981 M46 OD Question - Follow-up 200 1981

posted by  jbowser on  Thu Dec 26 03:34 CST 2002
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last visit: Fri Dec 24 08:36 CST 2010
[RELATED]

This is correct operation:

"There is continuity between the OD relay plug terminal 85 and chassis ground when in fourth gear but not in the other gears. Pressing the OD button during the test doesn't change the results."

I have a question about the following:

"There is continuity between the OD relay plug terminals 85 and 15 when in fourth gear but not in the other gears. Pressing the OD button during the test doesn't change the results."

I'm confused a bit, as far as the actual wiring goes you shouldn't have continuity between these two points, are you removing the relay before taking these readings? The OD engagement switch is between pins 15 (this pin should also have +12v with ignition turned on) and 86 (I think it's 86) and with the relay removed you should have no continuity (infinate ohms) until the switch on the shifter is pushed then you should have continuity (< 1 ohm). What gear the transmission is in should have no bearing on what happens on these two wires.

Justin






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