Copyright © 1998 General Motors Corp.
P–7
W T E C I I E L E C T RO N I C C O N T RO L S T RO U B L E S H O OT I N G M A N UA L
APPENDIX P — INPUT/OUTPUT FUNCTIONS
WARNING!
These schematics show the intended use of the specified controls features which
have been validated in the configuration shown. Any miswiring or use of these
features which differs from that shown could result in damage to equipment or
property, personal injury, or loss of life. ALLISON TRANSMISSION IS NOT
LIABLE FOR THE CONSEQUENCES ASSOCIATED WITH MISWIRING
OR UNINTENDED USE OF THESE FEATURES.
AUXILIARY FUNCTION RANGE INHIBIT (SPECIAL)
USES:
Prevents inadvertent range selection when auxiliary equipment is operating. Used in emergency equipment
to prevent inadvertent range selection from NEUTRAL.
VARIABLES TO SPECIFY:
None
VOCATIONS:
Fire trucks, crash trucks
Figure P–7. Auxiliary Function Range Inhibit (Special)
V05012
WIRE 105
SERVICE INDICATOR
WIRE 153
AUX. FUNCTION RANGE
INHIBIT INPUT 1
WIRE 161B SIGNAL GROUND
WIRE 155
AUX. FUNCTION
RANGE INHIBIT INPUT 2
BATTERY
GROUND
WIRE 143A
AUXILIARY
FUNCTION
SWITCH 1
AUXILIARY
FUNCTION
SWITCH 2
SERVICE
TRANS
SWITCHED
POWER
VIM
K1
+
–
NOTE: Both input signals must turn on
within 120 seconds. If the state of the
two input signals is different for longer
than this time period, the “SERVICE
TRANS” light will be illuminated, a code
will be stored in memory, and neutral-to-
range shifts will NOT be inhibited.
NOTE: The “SERVICE TRANS” light must
be mounted in the dash and in clear view
of the operator. Preferred lens color is red
(amber is acceptable).
9
13
8
1
VIW
CONNECTOR
ECU
WARNING!
These schematics show the intended use of the specified controls features which
have been validated in the configuration shown. Any miswiring or use of these
features which differs from that shown could cause unintended selection of range
or other unpredictable operation resulting in damage to equipment or property,
personal injury, or loss of life. ALLISON TRANSMISSION IS NOT LIABLE
FOR THE CONSEQUENCES ASSOCIATED WITH MISWIRING OR
UNINTENDED USE OF THESE FEATURES.
