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.
11. STALL CHECK
USES: Provides a means of selecting a programmed gear for checking engine speed at converter stall.
VARIABLES TO SPECIFY: None
VOCATIONS: Various
Figure K–5. Stall Check
WARNING!
This function is for diagnostic purposes only and must not be activated duringnormal vehicle operation.ECU
S V
V-13
DASH SWITCH
Open: Normal operating mode Closed: Stall check mode
V06650 R N D MODE SELECT
To switch between Normal and Stall check modes, transmission must be in neutral and output speed below 60 rpm, and throttle at near- zero position.
SWITCHED POWER
WIRE 118 STALL CHECK
For Shift Selector wiring requirements, see installation drawing AS00-166
COMMERCIAL ELECTRONIC CONTROLS 2 (CEC 2) TROUBLESHOOTING MANUAL
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.
APPENDIX K — WIRING SCHEMATICS
SPECIFIC INPUT/OUTPUT FUNCTIONS
14. MANUAL LOCKUP (ALSO SHOWN: INPUT 29, MANUAL LOCKUP ENABLE)
USES: Provides for the manual application of the lockup clutch for non-roading applications. Uses two inputs; one to select manual versus automatic lockup shift mode, and the second as the switching mechanism to command the lockup clutch on and off.
VARIABLES TO SPECIFY: None
VOCATIONS: Oil field pumping, mud pumps, hoists, drilling, trenchers
Figure K–6. Manual Lockup
WARNING!
If this function is enabled in the shift calibration, the function MUST be integrated into the vehicle wiring. If the function is available in the shift calibration but will not be used in the vehicle, it MUST be disabled in the calibration.
V04875.01
WIRE 154 MANUAL LOCKUP ENABLE WIRE 161 SIGNAL RETURN WIRE 155 MANUAL LOCKUP
SWITCH 1 AUTOMATIC/MANUAL LOCKUP OPERATING PROCEDURE SWITCH 1 OPEN OPEN CLOSED CLOSED SWITCH 2 OPEN CLOSED OPEN CLOSED
Normal Auto Lockup Operation Normal Auto Lockup Operation Converter Operation Only Lockup Operation Only SWITCH 2
LOCKUP ON/LOCKUP OFF
NOTE: This function must NOT be used when the transmission is used for vehicle propulsion.
ECU
S V V-27
V-11 V-31
COMMERCIAL ELECTRONIC CONTROLS 2 (CEC 2) TROUBLESHOOTING MANUAL
APPENDIX K — WIRING SCHEMATICS
SPECIFIC 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.
16. SHIFT SELECTOR TRANSITION
USES: When two shift selectors are used, to select which one is active.
VARIABLES TO SPECIFY: None
VOCATIONS: Various
Figure K–7. Shift Selector Transition
WARNING!
If this function is enabled in the shift calibration, the function MUST be integrated into the vehicle wiring. If the function is available in the shift calibration but will not be used in the vehicle, it MUST be disabled in the calibration.
ECU S V V-13 SELECTOR 1 DASH SWITCH Open: Selector 1 Closed: Selector 2 V06650.01 R N D MODE SELECT SELECTOR 2
To switch between selector 1 and selector 2, transmission must be in neutral and output speed below 60 rpm.
When ECU is turned on, active shift selector is determined by current switch position. R N D MODE SELECT SWITCHED POWER WIRE 118 SHIFT SELECTOR TRANSITION
Display of the inactive selector is disabled.
For Shift Selector wiring requirements, see installation drawing AS00-166
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.
COMMERCIAL ELECTRONIC CONTROLS 2 (CEC 2) TROUBLESHOOTING MANUAL
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.
APPENDIX K — WIRING SCHEMATICS
SPECIFIC INPUT/OUTPUT FUNCTIONS
17. NEUTRAL TO RANGE INHIBIT
USES: Holds transmission in NEUTRAL regardless of the range position of the shift selector.
VARIABLES TO SPECIFY: None
VOCATIONS: Various
Figure K–8. Neutral To Range Inhibit
WARNING!
If this function is enabled in the shift calibration, the function MUST be integrated into the vehicle wiring. If the function is available in the shift calibration but will not be used in the vehicle, it MUST be disabled in the calibration.
DASH SWITCH (Typically indicates status of vehicle park brake system) Open: Park brake applied
Closed: Park brake not applied
V06651 WIRE 161 SIGNAL RETURN WIRE 137 NEUTRAL-TO-RANGE INHIBIT V-31 V-29 ECU S V
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.
COMMERCIAL ELECTRONIC CONTROLS 2 (CEC 2) TROUBLESHOOTING MANUAL
APPENDIX K — WIRING SCHEMATICS
SPECIFIC 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.
25. QUICK TO NEUTRAL
USES: Automatically shifts transmission to NEUTRAL when function is activated.
VARIABLES TO SPECIFY: None
VOCATIONS: Oil field pumping, trenchers, augers
Figure K–9. Quick To Neutral
WARNING!
If this function is enabled in the shift calibration, the function MUST be integrated into the vehicle wiring. If the function is available in the shift calibration but will not be used in the vehicle, it MUST be disabled in the calibration.
ECU S V V-28 V06652 SWITCHED POWER FUNCTION SWITCH (Normally closed) WIRE 155 QUICK-TO-NEUTRAL
NOTE: This function must NOT be used when the transmission is used for vehicle propulsion. To re-engage transmission, NEUTRAL must be selected before selecting a DRIVE range.