Allison tranny issue
HI all. I haven't gotten to experience this myself yet, but the service center says my 94 London Aire has a transmission issue when have driven it. They say that it only happens when you are slowing...
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Well, I got the coach back today and checked the error codes stored. They were:
56_22 2nd range verification test
25_11 Output speed sensor @ 0 rpm, 1st
54_12 Oncoming ratio test 1 to 2
69_32 This code doesn't exist in the Allison manual I found online
I cleared them and drove it.
The transmission shifting was a little rough overall I thought and sure enough, when I got on the highway and slowed a little the display lit "3" and the DO NOT SHIFT light popped on. I pulled over and got the codes.
56_55 5th range verification test
I started again and soon had the same issue, only this time the display lit a "6". Codes from that:
56_55 5th range verification test
56_22 2nd range verification test
Then it drove the rest of the way home ok.
Does that mean anything to anyone? I'm going to look around for an Allison place near me (Waverly, IA)
56_22 2nd range verification test
25_11 Output speed sensor @ 0 rpm, 1st
54_12 Oncoming ratio test 1 to 2
69_32 This code doesn't exist in the Allison manual I found online
I cleared them and drove it.
The transmission shifting was a little rough overall I thought and sure enough, when I got on the highway and slowed a little the display lit "3" and the DO NOT SHIFT light popped on. I pulled over and got the codes.
56_55 5th range verification test
I started again and soon had the same issue, only this time the display lit a "6". Codes from that:
56_55 5th range verification test
56_22 2nd range verification test
Then it drove the rest of the way home ok.
Does that mean anything to anyone? I'm going to look around for an Allison place near me (Waverly, IA)
