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Deere 8400 Park Break PSI switch Schematic
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user452
Posted 1/12/2019 01:44 (#7238991 - in reply to #7238464)
Subject: RE: Deere 8400 Park Break PSI switch Schematic


Install diagnostic fuse and go to CCU address 13.

Should read..

13
X0X

Center display digit is the switch position.

Start engine and move shifter to neutral.


Should read

13
X1X

If this is not the case unplug connector with engine off and key on and check pin a and b for 5 volts.

CCU address 08 should be sensor voltage. Should be between .2 and 4.5.


Edited by user452 1/12/2019 01:50
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