A SERVICE OF

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7
Electrical 579 Family
Peterbilt Motors Company 7-27
2. Engine Access - Connector located on OEM engine harness on drivers side of engine toward the rear of engine
FIGURE 7-25. Engine Access
J1939 Access Procedures
1. Identify J1939 Access Connector (note long blue shell)
2. Disconnect connection (note terminating resistor from inside blue connector)
FIGURE 7-26. J1939 Access
3. Make connection in between original connection (tin).
4. Ensure terminating resistor is inserted in blue connector shell (arrow).
FIGURE 7-27. J1939 Access