804607 14 Mercury ADJUSTING PAD

Table 1
Diagnostic Codes Table
J1939 Code and Description Conditions which Generate this Code System Response
561-9
TCS/ASR Engine Control Active : Abnormal Update Rate All communications on the data link have been lost. The code is logged.
639-9
J1939 Network #1 : Abnormal Update Rate All communications on the data link have been lost. The code is logged.
1231-9
J1939 Network #2 : Abnormal Update Rate All communications on the data link have been lost. The code is logged.
1231-14
J1939 Network #2 : Special Instruction All communications on the data link have been lost. The code is logged.
Illustration 1 g03486076
Illustration 2 g03506226Use this procedure to troubleshoot the electrical system if a problem is suspected with the CAN data link or the Cat Data Link.Note: This procedure checks for an open or for a short in the data link circuits.If Caterpillar Electronic Technician (ET) will not communicate with the ECM, refer to Troubleshooting, "Electronic Service Tool Does Not Communicate" before you begin this procedure. The procedure will verify that electrical power is being supplied to the ECM and to the service tool connector.The data links are used to communicate information between the engine ECM and other control modules that are a part of the application. Cat ET also communicates with the ECM via the data links.The service tool connector contains connections for electrical power and for the data links.When the keyswitch is in the OFF position, Cat ET may communicate with the ECM. However, the communications may be disrupted and the communications may require frequent reconnection. In order to avoid this problem, place the keyswitch in the ON position when Cat ET is being used.Cat ET may display the following error message:"The version of the ECM is not recognized and the integrity of the changed parameters and displayed data is not guaranteed."This message indicates one of the following conditions:
The flash file in the ECM is newer than the version of Cat ET.
The latest version of Cat ET has not been installed.
Illustration 3 g01444702
Terminal locations at the service tool connector
(A) +Battery
(B) −Battery
(C) CAN data link global shield
(D) Cat Data Link +
(E) Cat Data Link −
(F) Local CAN data link -
(G) Local CAN data link +
Illustration 4 g01559974
Terminal locations at the P1 ECM connector that are for the data links
(P1-8) Cat Data Link +
(P1-9) Cat Data Link −
(P1-34) Global CAN data link −
(P1-42) Global CAN shield
(P1-48) +Battery
(P1-50) Global CAN data link +
(P1-52) +Battery
(P1-53) +Battery
(P1-55) +Battery
(P1-57) +Battery
(P1-61) −Battery
(P1-63) −Battery
(P1-65) −Battery
(P1-67) −Battery
(P1-69) −Battery
(P1-70) Keyswitch
Illustration 5 g01326307
Terminal locations at the P2 ECM connector that are for the data link
(P2-11) Local CAN data link −
(P2-12) Local CAN data link +
(P2-23) Local CAN shield
Illustration 6 g01355248
Terminal locations at the termination resistors
(A) CAN data link +
(B) CAN data link −
(C) Shield
Table 2
Troubleshooting Test Steps Values Results
1. Inspect the Electrical Connectors and the Wiring
Note: Carefully follow this procedure in order to identify an intermittent problem.
A. Perform a visual inspection of the wiring between the P1 and P2 ECM connectors, the termination resistors, and the service tool connector. Also, inspect the wiring and the connectors at various controllers and control boxes.
Look for these problems:
-Harness damage that is caused by chafing
- Harness damage that is caused by excessive heat
-Look for moisture on the wiring and in the connectors.
- Pull on the wires that are associated with the data links.
This test verifies that the wire is properly crimped to the terminal and that the terminal is properly inserted into the connector.
Connectors
Results: The wiring and the connectors appear to be OK.
Proceed to Test Step 2
Results: There is a problem with the wiring or with a connector.
Repair the connectors or wiring and/or replace the connectors or wiring. Ensure that all of the connector seals are properly in place and ensure that the connectors are coupled.
Verify that the repair eliminates the problem.
2. Bypass the Wiring for the Data Link
A. Connect the 217-0113 Wiring Harness (ECM BYPASS) to the J1 connector, to the 332-7381 Data Link Cable As, and to the battery.
B. Restore the electrical power to the ECM.
C. Try to establish communication between Cat ET and the ECM.
Data link
Results: Cat ET and the ECM communicate.
Repair Cat ET and the ECM communicate when the bypass harness is installed. However, communication cannot be established via the engine wiring.
Disconnect the electrical connector from each of the control modules that is on the data link one at a time. This test will isolate the problem. Try to establish communication between Cat ET and the ECM after disconnecting each module.
The problem is in the control module if disconnecting the module allows Cat ET and the ECM to communicate. If a module is suspect, replace the module.
Verify that the repair eliminates the problem.
The control module is OK if the problem remains when the module is disconnected.
Results: ET and the ECM do not communicate.
Repair Communication between Cat ET and the ECM is not established when the bypass harness is installed. Temporarily connect a test ECM. Refe