Transmission Internal Mode Switch Logic; Solenoid And Clutch Chart (Normal Mode) - Workhorse ALLISON 1000MH Service Manual

WORKHORSE CUSTOM CHASSIS
Service Manual

TRANSMISSION INTERNAL MODE SWITCH LOGIC

Range
P
R
N
D
*M
1
*L1
*L2
*L3
*L4
*L5
*L6
ON = Open Circuit
OFF = Grounded Circuit
*M mode allows TAP Up/TAP Down feature functionally between 1st through 6th ranges.

SOLENOID AND CLUTCH CHART (NORMAL MODE)

Solenoid and Clutch Chart (Normal Mode)
Range Logic Clutch to
Status State
Steady State R
Garage Shift R-N
Garage Shift N-R
Steady State N or P
Upshift N-1
WSM082106
A
OFF
OFF
ON
ON
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
Pressure Control Solenoids
Line
PCS1
-- De-energized; Low and Reverse
Clutch Applied
-- De-energizing; Low and Reverse
Clutch Applied
-- De-energizing; Low and Reverse
Clutch Trimming On
-- De-energized; Low and Reverse
Clutch Applied
-- De-energized; Low and Reverse
Clutch Applied
© 2006 Workhorse Custom Chassis — All Rights Reserved
PAGE
SECTION
7.2 11
Automatic Transmission – Allison
B
ON
OFF
OFF
OFF
OFF
ON
OFF
OFF
OFF
OFF
OFF
OFF
PCS2
Energized; 3rd, 5th, and Reverse
Clutch Applied
Energizing; 3rd, 5th, and
Reverse Clutch Trimming Off
Energizing; 3rd, 5th, and
Reverse Clutch Trimming On
De-energized; Exhausted
Energized; 1-2-3-4 Clutch
Trimming On
2007 W Series Chassis
C
ON OFF
ON ON
ON OFF
OFF ON
OFF OFF
OFF ON
OFF OFF
OFF OFF
OFF OFF
OFF OFF
OFF OFF
OFF OFF
Shift Solenoids
SS1 SS2
ON ON
ON ON
ON ON
ON ON
ON ON
P
TCC
Sol.
SS3
ON OFF
ON OFF
ON OFF
ON OFF
ON OFF
2007 W Series