DDEC VI ELECTRONIC CONTROLS APPLICATION AND INSTALLATION
Communications – Proprietary Engine-CAN Data Link
The low speed proprietary Engine-CAN link between the MCM and the CPC must be a twisted
shielded cable with 0.75 mm diameter wire (approximately 20 AWG), bundle shielded with drain
wire and 30 twists per meter. The insulation is rated to 105°C. Termination resistors for the
Engine-CAN link are located in the CPC and MCM. The wiring for the MCM 21–pin connector
and the CPC 18–pin #4 connector are listed in Table 3-76.
CPC 18–Pin #4 Connector
Function
MCM 21–Pin Connector
4/3
Engine-CAN Data Link (+)
21/13
4/1
Engine-CAN Data Link (-)
21/19
4/2
Engine-CAN Data Link (Shield)
21/10
Table 3-76
Propriety Engine-CAN Data Link
3.2.4
POWER SUPPLY – 12 VOLT SYSTEM
Normal operating voltage on a 12 V system for the CPC and MCM is 11-16 VDC.
NOTICE:
Operating the CPC or MCM over the voltage limits of 16 volts will
cause damage to the CPC or MCM.
Operating the CPC and/or MCM between 8 and 11 volts may result in degraded engine operation.
(Transient operation in this range during engine starting is considered normal for 12 volt systems.)
NOTICE:
Reversing polarity will cause damage to the CPC and/or MCM if
the Power Harness is not properly fused.
NOTE:
All output loads, ignition and CPC power must be powered from the same battery
voltage source.
All information subject to change without notice.
(Rev. 01/07)
3-65
7SA827 0701
Copyright © 2007 DETROIT DIESEL CORPORATION
