CIRCUIT DESCRIPTION:
This DTC sets if the TCM determines the primary shift selector calibration is invalid.
ACTION TAKEN WHEN THE DTC SETS:
1. The CHECK TRANS light illuminates.
2. DTC is stored in the TCM history.
3. Display may be in the wrong language and/or units (English/Metric) could be formatted incorrectly.
CONDITIONS FOR CLEARING THE DTC:
Use the diagnostic tool to clear the DTC from the TCM history. The TCM automatically clears the DTC from the TCM history if the vehicle completes 40 warm-up cycles without failure.
DIAGNOSTIC AIDS:
None
Allison 1000 & 2000 Gen 5 Fault Code:P0980 Shift Solenoid 3 (SS3) Control Circuit – High
Allison 1000 & 2000 Gen 5 Fault Code:P0979 Shift Solenoid 3 (SS3) Control Circuit – Low
Allison 1000 & 2000 Gen 5 Fault Code:P097C Shift Solenoid 3 (SS3) Control Circuit – Open
Allison 1000 & 2000 Gen 5 Fault Code:P0977 Shift Solenoid 2 (SS2) Control Circuit – High
Allison 1000 & 2000 Gen 5 Fault Code:P0976 Shift Solenoid 2 (SS2) Control Circuit – Low
Allison 1000 & 2000 Gen 5 Fault Code:P097B Shift Solenoid 2 (SS2) Control Circuit – Open
