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DDEC VI ELECTRONIC CONTROLS APPLICATION AND INSTALLATION
SAE J1939 Data Link
A VSS wired to the CPC is not required if the transmission output shaft speed message is being
transmitted over the SAE J1939 Data Link. To obtain accurate vehicle mileage, the parameters
listed in Table 3-109 must be programmed with VEPS.
Parameter
Group
Parameter
Range
Default
8
Vehicle Speed Sensor
0 = No Sensor
1 = C3 Sensor
2 = Square Wave (Hall Sensor)
3 = J1939 (ECT1)
4 = Magnetic Pickup
5 = J1939 (TCO1)
6 = J1939 (CCVS Source 1)
7 = J1939 (CCVS Source 2)
8 = J1939 (CCVS Source 3)
4 = Magnetic
8
Axle Ratio
1 – 20.0
5.29
8
Tire Revs per Unit Distance
160 – 1599 l/km
312
8
Top Gear Ratio
0.1 – 2.55
1
8
Second Highest Gear Ratio
0 — 5.75
2.54
8
Two Spd Axle Second
Axle Ratio
1 – 20.0
5.29
8
Anti Tamper
0 = Disable
1 = Enable VSS ABS Anti Tampering
Function
2 = Enable VSS without ABS Anti
Tampering Function
0 = Disable
Table 3-109
Vehicle Speed Sensor Parameters for J1939 Option
VSS Anti-tamper
If the sensor appears to be working improperly, but the vehicle speed is not zero, VSS
Anti-Tamper will log a VSS fault.
All information subject to change without notice.
(Rev. 01/07)
3-105
7SA827 0701
Copyright © 2007 DETROIT DIESEL CORPORATION