277
M4.8-1055-067
03 Rev. 10/09
ELECTRICAL
Event Code 724
Event Code 724
CAN Communication Time Out ACCESS 7 and
ACCESS 1.
Lost CAN communication between ACCESS 7 and
ACCESS 1.
Step 1: Check for other event codes and investigate
them first.
• If: No other event codes.
– Then proceed to step 2.
Step 2: Verify ACCESS 1 remains powered at time of
code.
• If: ACCESS 1 not powered.
– Then trace/repair power supply wiring to
CA215-17 (+) and CA215-4 (-).
• If: ACCESS 1 remains powered.
– Then proceed to Step 3.
Step 3: Key OFF truck and check CAN high and low
lines with DVOM for proper resistance at harness
CA401-1 and CA401-6, should be approximately 60
ohm.
• If: 0 ohm.
– Then a short exists between CAN high and
CAN low. Check wiring and repair.
• If: 60 ohm.
– Then CAN line is OK, replace ACCESS 1 if
code continues.
• If: Greater than 60 ohm.
– Then check wiring for an open or bad connec-
tion. If OK, then replace ACCESS 1.
Figure 16080
Crown 2007 PF15665-67 Rev. 10/09
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