MANIFOLD 5S7077 - Caterpillar

Use this procedure to solve communication problems between the Caterpillar Electronic Technician (ET) and the engine control module (ECM). Cat ET must communicate with the ECM on the "Cat Data Link" and on the J1939 data link in order to service the engine.Indicators on the communication adapter indicate that communication is occurring on a particular data link. The "J1939 / DeviceNet" indicator indicates that the communication adapter is communicating on the J1939 data link. The "J1708" indicator indicates that the communication adapter is communicating on the "Cat Data Link". Cat ET displays a message during the connection if Cat ET cannot communicate on both data links.The following conditions can cause a communication problem:
Incorrect communication adapter
Use of a parallel cable between the communication adapter and the PC
Incorrect version of Cat ET
Incorrect firmware in the communication adapter
Incorrect configuration of Cat ET
A problem with electrical power to the communication adapter
A problem with electrical power to the engine ECM
A problem with the wiring for a data link
A problem with the electrical cables between the PC and the vehicle
Table 1
Troubleshooting Test Steps     Values     Results    
1. Determine the communication problem..
If an indicator other than the "POWER" indicator is illuminated when Cat ET is not communicating with an ECM, disconnect and reconnect the communication adapter.
    ECM     Result : Both indicators on the communication adapter are not flashing.
Proceed to Step 2.
Result : Cat ET indicates that the engine is serviced on both links.
Proceed to Step 2.
Result : Cat ET displays a message that indicates the firmware in the communication adapter does not support communication on both data links.
Proceed to Step 3.
Result : Cat ET displays an Error" #142 The interface hardware is not responding" message.
Proceed to Step 3.
Result : Cat ET displays a message that indicates that Cat ET cannot find an exact match for the software version in the ECM.
Result : The power indicator is not illuminated.
Proceed to Step 5.
Repair : Update Cat ET to the latest available version.
STOP
   
2. Verify that the Correct Communication Adapter is Being Used
A. A 317-7484 Communication Adapter Gp must be used to communicate. The following communication adapters cannot be used because the communication adapters do not communicate over both data links:
- Wireless communication adapter
- 7X-1701 Communication Adapter As
B. Determine the communication adapter that is being used.     Communication Adapter     Result : An incorrect communication adapter is being used.
Repair : Connect a correct communication adapter. Refer to Troubleshooting, "Electronic Service Tools", if necessary. Attempt to establish communication. Continue with this procedure if the communication adapter does not communicate on both data links.
Result : A correct communication adapter is being used. However, the "Power" indicator is not illuminated.
Proceed to Step 5.
Result : A correct communication adapter is being used. The "Power" indicator is illuminated.
Proceed to Step 4.
   
3. Check the Version of the Firmware for the Communication Adapter.
Note: The version of the firmware for the communication adapter must be "3.0.0" or higher.
A. Electronically disconnect Cat ET. Verify that the "Power" indicator on the communication