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DDEC VI ELECTRONIC CONTROLS APPLICATION AND INSTALLATION
4.1.6
CRUISE CONTROL RESUME/ACCEL SWITCH AND SET/COAST
SWITCH
RESUME
– If Cruise Control has been disabled with the service brake or the clutch switch,
momentary contact to the ON position (switching to battery ground) restores the previously
set cruise speed.
ACCEL
– When Cruise Control is active, the Resume/Accel input can be used to increase the
power and speed by toggling the switch. Momentarily toggling and releasing the Resume/Accel
switch will increase the set point by 1 MPH increments. Holding the Resume/Accel will increase
the set point by 1 MPH per second. When released, the cruise control set point will be at the
new speed.
The Resume/Accel Switch is a momentary normally open switch.
SET
– Cruise Speed is set by momentarily contact the switch to the ON position (switching the
digital input to battery ground). Cruise Control will become active and maintain the vehicle
speed present at the time.
COAST
– When Cruise Control is active, the Set/Coast input can be used to reduce power and
speed by toggling the switch. Momentarily toggling and releasing the Set/Coast switch will
decrease the set point by 1 MPH increments. Holding the Set/Coast will decrease the set point by
1 MPH per second. When released the Cruise Control set point will be at the new speed.
The Set/Coast Switch is a momentary normally open switch.
Installation
The Resume/Accel Switch is wired to the CPC on pin 1/16. The Set/Coast Switch is wired to the
CPC on pin 1/12. Alternatively, either may be multiplexed on J1939. Refer to section 4.2, “Switch
Inputs Received Over J1939 Data Link” for additional information on multiplexing this input.
Programming Requirements and Flexibility
The options for this digital input are listed in Table 4-7.
Parameter Group
Parameter
Options
Default
Access
13
CC Set Cst Res
Accel Sw Con
fi
g
0 – Hardwired
1 – CCVS1
2 – CCVS2
3 – CCVS3
0 – Hardwired
VEPS or DRS
Table 4-7
Cruise Control Resume/Accel Switch Programming Options
Diagnostics
If both the Cruise Control Set/Coast and Resume/Accel switches are grounded for more than a
programmed number of consecutive samples, a diagnostic fault is logged. All cruise control
switch functions will be disabled.
All information subject to change without notice.
(Rev. 01/07)
4-9
7SA827 0701
Copyright © 2007 DETROIT DIESEL CORPORATION