Here is the instruction show you guide on how to repair P0731 incorrect 2nd gear ration error for Allison 3000 & 4000 Gen5.
Related Contents:
2025 2019 Allison DOC Transmission Diagnostic Software Free Download
DIAGNOSTIC RESPONSE:
DNS,Attempt 3rd, then 5th
CIRCUIT DESCRIPTION:
This test verifies the transmission is maintaining proper ratio while in second range.
ACTION TAKEN WHEN THE DTC SETS:
When DTC P0732 is active,the following conditions will occur:
1 The TCM attempts to shift to third range. lf unsuccessful, the TCM commands fifth range.
2 While diagnostic response is active,the TCM ignores shift selector inputs.
3 The CHECK TRANS light illuminates.
4 DTC is stored in the TCM history.
5 TCM inhibits TCC engagement.
6 TCM freezes shift adapts (DNA).
CONDITIONS FOR CLEARING THE DTC/CHECK TRANS LIGHT:
UsethediagnostictltoclathfrmthhistoyheMautmatcayclarthfrmthhstoyifthevehiclecompletes4warmupcylewithotthrecurng
DIAGNOSTIC AIDS:
DTC P0732 may be caused by:
1 Output sat speed sensor signal circuit issues.
2 Turbine shaft speed sensors signal circuit issues.
3 Low clutch pressures,main pressure,or control main pressure.
4 Control module issues like stuck/sticky valves,mechanically defective solenoids,broken springs damaged valve bores,plugged suction filter,damaged gaskets,excessive leaks to exhaustet.
5 Internal transmission damage.
6 Off-going or on-coming clutch issue.
7 Issue with TCM.
More Allison repair case,please refer to Allison Trouble Repair