Solenoid PCS2 jammed in disconnected position
â–¶ How to fix
Contact an Allison dealer.
What you'll see
No driver-visible symptom recorded.
System reaction
No system-reaction text recorded.
Diagnostic depth
Detection
The control unit has detected slipping in a clutch (C2 or C3) which PCS2 supplies with hydraulic pressure.
Possible cause
The cause can be: Irregular sensor signal from turbine or output shaft speed.Leak or obstruction in a supply circuit for a specific clutch.Defective PCS2 solenoid.A governor valve for PCS2 has jammed.A locking valve for C2 has jammed.