Communications - Proprietary Engine-Can Data Link; Power Supply - 12 Volt System - Detroit Diesel DDEC VI 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
4/3
4/1
4/2
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.
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.)
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)
7SA827 0701 Copyright © 2007 DETROIT DIESEL CORPORATION
DDEC VI ELECTRONIC CONTROLS APPLICATION AND INSTALLATION
Function
Engine-CAN Data Link (+)
Engine-CAN Data Link (-)
Engine-CAN Data Link (Shield)
NOTICE:
NOTICE:
MCM 21–Pin Connector
21/13
21/19
21/10
3-65