Detroit Diesel Series 60 DDEC VI, Troubleshooting Manual

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DDEC VI SERIES 60 TROUBLESHOOTING GUIDE
The following criteria are to be used when designing the VIH:
□ The four vehicle connectors are designed to accept 18 AWG wires for all circuits.
□ The conductor must be annealed copper, not aluminum, and must comply with the industry
standard SAE J1128 document.
□ Color code the wires as shown in the schematics. If the wires used are the same color,
hot stamp the cavity number on the wires.
NOTE:
The Vehicle Speed Sensor (VSS) must be a twisted pair. The twists are a minimum of 12
turns per foot (305 mm) and are required to minimize electromagnetic field coupling.
NOTE:
J1939 cable is required for the J1939 datalink wires. Refer to SAE J1939–11 spec
for specific requirements.
The low speed propriety 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.
2.3.2.1 Frequency Input
The CPC has one frequency input on the VIH that can accept a variable reluctance sensor. A
typical frequency input functions is the Vehicle Speed Sensor (VSS). Requirements for a variable
reluctance signal interface are listed in Table 2-9.
Parameter Range
Input Amplitude Range V Peak to Peak
Input Frequency Range 0 to 10,000 Hz
Table 2-9 Variable Reluctance Signal Interface
2.3.3 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.)
All information subject to change without notice.
PRELIMINARY 6SE567 0512 Copyright © 2005 DETROIT DIESEL CORPORATION
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