Appendix C – Allison Diagnostic Troubleshooting Codes
193
DTC
Description
CHECK
TRANS
Light
Inhibited Operation
Description
P0975 Shift Solenoid 2 (SS2) Control Circuit Open
Yes
7-speed: Allow 2 through 6, N, R
P0976 Shift Solenoid 2 (SS2) Control Circuit Low
Yes
7-speed: Allow 2 through 6, N, R
Inhibit TCC operation
P0977 Shift Solenoid 2 (SS2) Control Circuit High
Yes
7-speed: Allow 2 through 6, N, R
P0989 Retarder Pressure Sensor Failed Low
No
None
P0990 Retarder Pressure Sensor Failed High
No
None
P1739 Incorrect Low Gear Ratio
Yes
Command 2
nd
and allow shifts 2
through 6, N, R
P1891 Throttle Position Sensor PWM Signal Low Input
No
Use default throttle values
P1892 Throttle Position Sensor PWM Signal High Input
No
Use default throttle values
P2184 Engine
Coolant
Temperature
Sensor Circuit Low Input
No
Use default engine coolant values
P2185 Engine
Coolant
Temperature
Sensor Circuit High Input
No
Use default engine coolant values
P2637 Torque Management Feedback Signal (SEM)
Yes
Inhibit SEM
P2641 Torque Management Feedback Signal (LRTP)
Yes
Inhibit LRTP
P2670 Actuator Supply Voltage 2 (HSD2) Low
Yes
DNS, SOL OFF (hydraulic default)
P2671 Actuator Supply Voltage 2 (HSD2) High
Yes
DNS, SOL OFF (hydraulic default)
P2685 Actuator Supply Voltage 3 (HSD3) Low
Yes
DNS, SOL OFF (hydraulic default)
P2686 Actuator Supply Voltage 3 (HSD3) High
Yes
DNS, SOL OFF (hydraulic default)
P2714 Pressure Control Solenoid 4 (PCS4) Stuck Off
Yes
DNS, RPR
P2715 Pressure Control Solenoid 4 (PCS4) Stuck On
Yes
DNS, SOL OFF (hydraulic default)
P2718 Pressure Control Solenoid 4 (PCS4) Control Circuit Open
Yes
DNS, SOL OFF (hydraulic default)
P2719 Pressure Control Solenoid (PCS) 4 System Performance
P2720 Pressure Control Solenoid 4 (PCS4) Control Circuit Low
Yes
DNS, SOL OFF (hydraulic default)
P2721 Pressure Control Solenoid 4 (PCS4) Control Circuit High
Yes
DNS, SOL OFF (hydraulic default)
P2723 Pressure Control Solenoid 1 (PCS1) Stuck Off
Yes
DNS, RPR
P2724 Pressure Control Solenoid 1 (PCS1) Stuck On
Yes
DNS, RPR
P2727 Pressure Control Solenoid 1 (PCS1) Control Circuit Open
Yes
DNS, SOL OFF (hydraulic default)
P2728 Pressure Control Solenoid (PCS) 1 System Performance
P2729 Pressure Control Solenoid 1 (PCS1) Control Circuit Low
Yes
DNS, SOL OFF (hydraulic default)
P2730 Pressure Control Solenoid 1 (PCS1) Control Circuit High
Yes
DNS, SOL OFF (hydraulic default)
P2736 Pressure Control Solenoid 5 (PCS5) Control Circuit Open
Yes
Inhibit retarder operation
P2737 Pressure Control Solenoid (PCS) 5 System Performance
P2738 Pressure Control Solenoid 5 (PCS5) Control Circuit Low
Yes
Allow 2 through 6, N, R. Inhibit
retarder and TCC operation
P2739 Pressure Control Solenoid 5 (PCS5) Control Circuit High
Yes
Inhibit retarder operation
P2740 Retarder Oil Temperature Hot
No
None
P2742 Retarder Oil Temperature Sensor Circuit – Low Input
No
Use default retarder temp values
P2743 Retarder Oil Temperature Sensor Circuit – High Input
No
Use default retarder temp values
P2761 TCC PCS Control Circuit Open Yes
Inhibit
TCC
operation
P2762 TCC PCS Control Circuit Range / Performance
P2763 TCC PCS Control Circuit High
Yes
Inhibit TCC operation
P2764 TCC PCS Control Circuit Low
Yes
7-speed: Allow 2 through 6, N, R.
Inhibit TCC operation
P2772 Four Wheel Drive Low Switch Circuit Performance
P278A Kickdown Input Failed ON
No
Inhibit kickdown operation
Summary of Contents for X3-45 2011
Page 1: ...COACH MANUFACTURER OPERATOR S MANUAL X3 45 COACH PA1581...
Page 4: ......
Page 6: ......
Page 10: ......
Page 24: ......
Page 128: ......
Page 134: ......
Page 171: ...Technical Information 165 X3 45 OVERALL DIMENSIONS SIDE ELEVATION 18673...
Page 172: ...Technical Information 166 X3 45 OVERALL DIMENSIONS TOP FRONT AND REAR VIEWS 18674...
Page 182: ......
Page 186: ......
Page 206: ......