![Detroit Diesel DDEC VI Application And Installation Download Page 101](http://html.mh-extra.com/html/detroit-diesel/ddec-vi/ddec-vi_application-and-installation_2488033101.webp)
DDEC VI ELECTRONIC CONTROLS APPLICATION AND INSTALLATION
Wire Resistances
VIH power terminals require 14 AWG wire. The total resistance of the power harness cannot
exceed 60 m
Ω
. The characteristics for Te
fl
on coated and GXL type wire gauges are listed in
listed in Table 3-74.
SAE Wire
Gauge
Metric
Gauge #
Area
mm
2
Resistance
m
Ω
/m
Resistance
m
Ω
/ft @ 20°C
Resistance m
Ω
/ft
@ 120°C
Diameter
mm
16
1
1.129
15.300
4.66
6.50
0.72
14
2
1.859
9.290
2.83
3.94
1.18
12
3
2.929
5.900
1.80
2.50
1.86
10
5
4.663
3.720
1.13
1.58
2.97
8
8
7.277
2.400
0.73
1.02
4.63
Table 3-74
Wire Characteristics
Total power harness resistance is determined by shorting together the eight terminals in the ECU
connector, and then measuring the resistance from the battery (+) to battery (-) terminal at the
maximum operating temperature (105°C). Disconnect the harness from the batteries before
measuring the resistance.
Communications – SAE J1939 Data Link
SAE J1939 Data Link+, SAE J1939 Data Link-, and SAE J1939 Data Link Shield are used as the
J1939 communication link. J1939 cable is required for the J1939 data link. Termination resistors
are required per the SAE speci
fi
cation. Refer to SAE J1939–11 for speci
fi
c requirements.
NOTICE:
The communication system operation will degenerate if the wrong
cable is used.
The CPC connector pin assignments for SAE J1939 are listed in Table 3-75.
Pin
Signal Type
Function
2/18
Data Link
SAE J1939 (+)
2/17
Data Link
J1939 Shield
2/16
Data Link
SAE J1939 (-)
Table 3-75
J1939 CPC to VIH Connector Pin Assignments
All information subject to change without notice.
(Rev. 01/07)
3-63
7SA827 0701
Copyright © 2007 DETROIT DIESEL CORPORATION