Forum Discussion

Berjmobile's avatar
Berjmobile
Explorer
Aug 12, 2015

no electric power to Allison shifter

Recently after getting some good advise from this Forum, I changed out both ignition solenoids on my'93 Pace Arrow diesel. Everything ran perfectly from that point. Yesterday, getting the coach ready for a run over to Cummins for its annual oil change there was no start circuit. Everything on the coach was running - power everywhere EXCEPT for the shift lever -no indication of shift position (N, D etc.). Is there a fuse for the shift controller somewhere? In the shifter body itself, is there a possible problem there - burned out resistor, chip, wire, etc.? Once again I am stuck. Any suggestions on this from the members? Thanks.
Class A

2 Replies

  • wolfe10's avatar
    wolfe10
    Explorer
    Aug 12, 2015
    Which Allison??

    The 3000's have two fuses to the ECU-- one for memory and one for power. No idea where it is on yours. I would start by looking in your chassis fuse box and then near the Allison ECU.
  • gemert's avatar
    gemert
    Explorer
    Aug 12, 2015
    Berjmobile wrote:
    Recently after getting some good advise from this Forum, I changed out both ignition solenoids on my'93 Pace Arrow diesel. Everything ran perfectly from that point. Yesterday, getting the coach ready for a run over to Cummins for its annual oil change there was no start circuit. Everything on the coach was running - power everywhere EXCEPT for the shift lever -no indication of shift position (N, D etc.). Is there a fuse for the shift controller somewhere? In the shifter body itself, is there a possible problem there - burned out resistor, chip, wire, etc.? Once again I am stuck. Any suggestions on this from the members? Thanks.

    Allison shifters routinely have a fuse behind the panel where the shifter is mounted (under.) The engine usually won't even turn over if that fuse is blown.

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