PREVOST H3-45 2023 Operator's Manual page 270

C-16 Allison Transmission Other Features
DTC
Pressure Control Solenoid 1 (PCS1) Control Circuit
P2729
Low
Pressure Control Solenoid 1 (PCS1) Control Circuit
P2730
High
Pressure Control Solenoid 5 (PCS5) Control Circuit
P2736
Open
Pressure Control Solenoid 5 (PCS5) Control Circuit
P2738
Low
Pressure Control Solenoid 5 (PCS5) Control Circuit
P2739
High
Retarder
Temperature
P273F
Condition
P2742 Retarder Oil Temperature Sensor Circuit – Low
P2743 Retarder Oil Temperature Sensor Circuit – High
P2761 TCC PCS Control Circuit Open
P2763 TCC PCS Control Circuit High
P2764 TCC PCS Control Circuit Low
Transmission Clutch Life Expired (Clutch Adaptive
P2789
Learning at Limit)
P2793 Gear Shift Direction Circuit
P2808 Pressure Control Solenoid 6 (PCS6) Stuck Off
P2809 Pressure Control Solenoid 6 (PCS6) Stuck On
Pressure Control Solenoid 6 (PCS6) Control Circuit
P2812
Open
Pressure Control Solenoid (PCS) 6 System
P2813
Performance
Description
Oil Temperature Sensor
PA-1652 Operator's Manual H3-45 Coach
CHECK
Light
DNS, SOL OFF (hydraulic
Yes
default)
DNS, SOL OFF (hydraulic
Yes
default)
Yes Inhibit retarder operation
Allow 2 through 6, N, R.
Yes Inhibit retarder and TCC
operation
Yes Inhibit retarder operation
Over
No None
Use default retarder temp
No
values
Use default retarder temp
No
values
Yes Inhibit TCC operation
Yes Inhibit TCC operation
7-speed: Allow 2 through 6,
N, R.
Yes
Inhibit TCC operation
No None
*Ignores PWM input from
shift selector
**Depending
Yes
configuration, may or may
not allow direction changes
during faults
Yes DNS, RPR
Yes DNS, RPR
DNS, SOL OFF (hydraulic
Yes
default)
TCM forces VMM off, TCM
Yes
inhibits TCC engagement
Inhibited Operation
Description
on OEM