SPN
FMI
516122
19
DECU Ignition Line, J1
Pin 17 short
516123
2
J1939 ABS Node
- Timeout or
Communication Loss
Table 6 – Diagnostic Trouble Codes (DTCs)
Description
Ignition wire open or short to
high source
Loss of CAN messages
Cause
•
•
•
•
•
•
•
•
•
•
•
•
•
•
Corrective Action
Key on the vehicle and check
that 9-15 volts is received from
Pin 17 on the J1 connector.
Check wiring and Pin 17 on J1
connector for open circuit or poor
connection.
Check wiring from DECU to
the fuse panel for open or bad
connection.
Check the fuse panel for blown
fuse.
Key off the vehicle and check
that 0 volts is received from Pin
17 on the J1 connector.
Check wiring and Pin 17 on J1
connector for short to Pin 18 on
J1 or other battery connection.
Check wiring from the DECU to
the fuse panel for short to high
source.
Check the fuse panel for short to
high source.
Verify the CAN messages for
ignition state correctly indicate
key-on and key-off on CAN; OEM
assistance may be necessary.
This DTC should resolve once
the cause is addressed, 12 volts
is seen at key-on, and 0 volts is
seen at key-off.
Verify there are no open wires or
shorts on the 2 CAN inputs, Pins
13/15 on J1 and Pins 6/8 on J2
connector.
Verify the 2 CAN inputs have
terminating resistors at the DECU
side and at the backbone.
Verify the ABS is broadcasting for
source address 0B on CAN bus
and that intellipark is connected
when the vehicle is keyed on.
This DTC should resolve once it
receives CAN data from SA 0B.
47
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