376 Multiplexing
NOTE: Engine speed (RPM) or road speed (MPH) limiters are options.
To tap into the TCM, Labrie uses the following wires on the Allison connector:
Table 5 Allison transmission programmed parameters
Parameters (PTO Enable) RPM
PTO Drive Interface 1: Maximum Engine Speed for Engagement 900
PTO Drive Interface 1: Maximum Engine Speed for Operation 4000
PTO Drive Interface 1: Maximum Output Speed for Engagement 5000
PTO Drive Interface 1: Maximum Output Speed for Operation 5000
Table 6 Allison wires to be enabled
Wires Wire # (WTEC IV)
Pack enable 117
Input
PTO enable 143
Output
PTO enable 130
Output neutral indicator – PTO 145
Auto-neutral pack enable (if present) 142
Table 7 Input
Wire # Description State
117 Pump pack enable Active when the brakes are used, and when the PTO and
auto-neutral switches are ON (ground signal).
143 P
TO enable Active when the PTO switch is ON (+12V signal).
142 Auto-neutral pack input Active when the brakes are used, and when the PTO and
auto-neutral switches are ON (ground signal).