Book: 23227143 (8-24-2010) Rev CPage62
COMPRESSOR CODE 71
Engine ECM Communication Failure
WEDGE to Engine ECM J1939 CAN BUSS circuit:
Circuit Description:
The J1939 CAN BUSS cable connects the WEDGE controller and the engine
ECM together as shown in the circuit above. The yellow WJDe is referred to as
J1939 CAN High (+). The green WJDe is referred to as J1939 CAN Low (-). The
gray WJDe is referred to as J1939 CAN Shield. This cable is the communications
link between the WEDGE and all devices connected to it.
Explanation:
The WEDGE cannot communicate with the engine ECM via J1939 CAN BUS
network.
Effect:
Code 71 is a SHUTDOWN condition and will stop the machine. The Compressor
Malfunction light will be on solid, and Code 71 will be displayed.
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