Fault Code Guide

f545341
30
87A
87
85
86
200E
497C1
81C
497D3
GRD
200
+12V
IGN
1
2
3
4
5
30
43
PTO
ENABLE
PTO
REG.
07/11/2008
1. CHM
2. Hydraulic Pressure
Switch
3. TCU
4. PTO Relay
5. PTO Solenoid
Fig. 2, Typical Wiring Diagram of an Allison Hydraulic
PTO with 4th Generation TCU
Chassis
Module
Bulkhead
Module
f544723
ON
200
200E
AMU/AAVA
Solenoid
Pressure
Feedback
Switch
Solenoid
Coil
J1939
Smart
Switch
02/22/2012
NOTE: PTO functions use a solenoid that provides air when power is applied to the solenoid coil (normally closed). The
pressure switch closes when air pressure reaches about 12 to 28 psi (83 to 193 kPa).
Fig. 3, Typical Wiring Diagram of a Pneumatic PTO
PTO and Pump Electrical Controls 54.38
Specifications
Business Class M2 Workshop Manual, Supplement 22, September 2012400/2