PREVOST H3-45 2023 Operator's Manual page 269

DTC
P2684 Actuator Supply Circuit Voltage 3 Open (HSD3)
P2685 Actuator Supply Voltage 3 (HSD3) Low
P2686 Actuator Supply Voltage 3 (HSD3) High
Internal Control Module Transmission Range Control
P27B2
Performance
P27B4 Output Shaft Direction Plausibility
Internal Control Module Transmission Speed Sensor
P27B6
Performance
P2714 Pressure Control Solenoid 4 (PCS4) Stuck Off
P2715 Pressure Control Solenoid 4 (PCS4) Stuck On
Pressure Control Solenoid 4 (PCS4) Control Circuit
P2718
Open
Pressure Control Solenoid (PCS) 4 System
P2719
Performance
Pressure Control Solenoid 4 (PCS4) Control Circuit
P2720
Low
Pressure Control Solenoid 4 (PCS4) Control Circuit
P2721
High
P2723 Pressure Control Solenoid 1 (PCS1) Stuck Off
P2724 Pressure Control Solenoid 1 (PCS1) Stuck On
Pressure Control Solenoid 1 (PCS1) Control Circuit
P2727
Open
Pressure Control Solenoid (PCS) 1 System
P2728
Performance
Description
PA-1652 Operator's Manual H3-45 Coach
Allison Transmission Other Features C-15
CHECK
Light
SOL
Yes operation,
modulation, ONA
DNS, SOL OFF (hydraulic
Yes
default)
DNS, SOL OFF (hydraulic
Yes
default)
Hydaulic default. Transmission
is restricted to N (Neutral)3
Yes
(Third Range)4 (Fourth
Range)5 (Fifth Range)
Shift not in process, LIR Shift
in process, complete shift then
LIR. TCM forces VMMS off.
Yes
TCM inhibits TCC
engagement. TCM freezes
shift adapts.
Shift not in process, LIR Shift
in process, complete shift then
LIR. TCM forces VMMS off.
Yes
TCM inhibits TCC
engagement. TCM freezes
shift adapts.
Yes DNS, RPR
DNS, SOL OFF (hydraulic
Yes
default)
DNS, SOL OFF (hydraulic
Yes
default)
TCM forces VMM off, TCM
Yes
inhibits TCC engagement
DNS, SOL OFF (hydraulic
Yes
default)
DNS, SOL OFF (hydraulic
Yes
default)
Yes DNS, RPR
Yes DNS, RPR
DNS, SOL OFF (hydraulic
Yes
default)
TCM forces VMM off, TCM
inhibits TCC engagement.
Yes Hydaulic default: N (Neutral)3
(Third Range)4 (Fourth
Range)5 (Fifth Range)
Inhibited Operation
Description
OFF, Inhibit TCC
Inhibit Main