ELECTRONIC TECHNICIAN (ET) TROUBLESHOOTING - Continued
CORRECTIVE ACTION - Continued
Communication adapter and/or cables
a. If you are using a communication adapter II, ensure that the firmware and
driver files for the communication adapter are the most current files that are
available. If the firmware and driver files do not match, the communication
adapter will not communicate with Cat ET (WP 0090).
b. Disconnect the communication adapter and the cables from connector CDC-
P7. Reconnect the communication adapter to the CDC-P7 connector.
Verify that the correct cable is being used between the communication
adapter and CDC-P7 connector.
Verify that battery voltage is present between terminals A and B of CDC-P7
connector (WP 0090, FO-2, sheet 2). If the communication adapter is not
receiving power, the display on the communication adapter will be blank.
In order to eliminate Cat ET and the related hardware as the problem, connect
Cat ET to a different engine. If the same problem occurs on a different engine,
check Cat ET and the related hardware in order to determine the cause of the
Check power to the ECM. Refer to Troubleshooting, Electrical Power Supply
If the ECM is not receiving battery voltage, the ECM will not communicate.
Ensure that the correct flash file is properly installed in the ECM. (WP 0013
A new ECM is not programmed to any specific engine until a flash file has been installed. The
engine will not start and the engine will not communicate with Cat ET until the flash file has been
downloaded. Refer to Troubleshooting, Flash Programming (WP 0013 SYMPTOM 12).
Troubleshoot the Cat data link for possible problems. Refer to Troubleshooting,
Verify the problem has been resolved.