0333323 JOHNSON BLANKET, Sound, rear, lower

Table 1
J1939 Code and Description CDL Code and Description Comments
5588-9
Proprietary Network #2 : Abnormal Update Rate 1998-9
N/A The code is logged.
6806-9
ECU Interface Mismatch : Abnormal Update Rate 246-9
Proprietary CAN Data Link : Abnormal Update Rate The code is logged. Note: If either the engine ECM or the SCR ECM are not powered on, the 5588-9 code or the 6806-9 code can be active. Ensure both ECM's are being powered before attempting to troubleshoot.
Table 2
Troubleshooting Test Steps Values Results
1. Check the Resistance on the Data Link
A. Turn the AC and DC breaker to the OFF position.
B. Disconnect the aftertreatment ECM J1 and J2 connectors from the aftertreatment ECM.
C. Measure the resistance of the data link between pin 8 (CDL (+)) and pin 9 (CDL (-)) on the J1 connector.
D. Measure the resistance of the data link between pin 34 (Global CAN (-)) and pin 50 (J1939 (+)) on the J1 connector.
E. Measure the resistance of the data link between pin 11 (Local CAN (-)) and pin 12 (Local (+)) on the J2 connector.
60+/-10 Ohms
Result: The resistance is less than 50 Ohms.
There are more than two terminating resistors installed in the wiring harness or a short circuit has been detected.
Repair: Repair or replace parts as necessary.
Verify the repair resolved the issue. Return to service.
Result: The resistance is 60 10 Ohms. The terminating resistors are OK.
Proceed to Test Step 2.
Result: The resistance is 120 10 Ohms.
There is a problem with a terminating resistor. Check the resistance on each terminating resistor.
Repair: Replace the failed terminating resistor.
Verify the repair resolved the issue. Return to service.
Result: The resistance is greater than 130 Ohms.
There is a problem with both terminating resistors or an open circuit has been detected.
Repair: Determine the cause of the problem. Repair the problem, when possible. Replace parts, if necessary.
Verify that the problem is resolved. Return to service.
2. Check for Power to the Aftertreatment ECM
A. Turn the DC breaker to the OFF position.
B. Disconnect the aftertreatment ECM