Code 34 Xx - Eeprom Compatibility Or Checksum Fault - Allison MD 3060 Troubleshooting Manual

W T E C I I E L E C T RO N I C C O N T RO L S T RO U B L E S H O OT I N G M A N UA L
CODE 34 XX — EEPROM COMPATIBILITY OR CHECKSUM FAULT
Main code 34 indicates there is a problem with the calibration EEPROM.
Main
Code
34
34
34
34
34
Active Indicator Clearing Procedure:
Power down
•
NOTE: Copying and reloading the current calibration into the ECU will not correct the fault.
Troubleshooting:
1. If the code set is 34 14 and it occurs in conjunction with Code 35 00, proceed to find the cause for
Code 35 00 and correct it.
2. After the cause for Code 35 00 has been corrected, drive the vehicle to see if Code 34 14 recurs. If
Code 34 14 recurs, proceed to Step 3.
3. Reprogram the correct calibration into the EEPROM. Contact your nearest Allison distributor/
dealer for locations qualified to do recalibration. Be certain the calibration and the software level
are compatible.
4. If the code recurs after reprogramming the EEPROM calibration, replace the ECU.
DIAGNOSTIC CODES
Subcode
12 EEPROM, factory calibration compatibility number wrong
13 EEPROM, factory calibration checksum
14 EEPROM, power off block checksum
15 EEPROM, diagnostic queue block checksum
16 EEPROM, real-time block checksum
Copyright © 1998 General Motors Corp.
Meaning
6–57