Eeprom Defect, Data Incorrect (Service Tool Fault Code Xxx); Cx860, Cx880 - New Holland CX720 Repair Manual

0386.2-EEPROM DEFECT, DATA INCORRECT (SERVICE TOOL
FAULT CODE XXX) (B.20.A.92 - G.30.C.10)

CX860, CX880

0386.2 - EEPROM DEFECT, DATA INCORRECT (SERVICE TOOL FAULT CODE XXX)

Context:
Engine enabled - fuel restricted and speed restricted to 1500 rev/min.
Cause:
An error in the Engine ECU EEPROM.
Possible failure modes:
1. Engine ECU malfunction.
Solution:
1. Check the condition of the fuse F-01, the ECU fuse (20 Amp) and the fuse F-38, the relay K-14 and the keystart
switch fuse (7.5 Amp). Check for good connections onto the ECU and at the connectors X004 and X010. Check
the main ECU relay, K-14, for correct operation.
A. If a fuse is blown or the relay is faulty replace and check engine operation. If engine performs okay, remove
the fault code from the engine ECU memory using the electronic service tool.
B. If the fuses, relay and wiring are okay continue with step 2.
2. Attempt to reload the engine ECU software using the Electronic Service Tool.
A. If the software is accepted check engine for correct operation.
B. If the software is not accepted continue with step 3.
3. Substitute the engine ECU.
A.
Series 1348 and above
Wiring harness - Electrical schematic frame 02 (A.30.A.88-C.20.E.02)
Series 1206-1347
Wiring harness - Electrical schematic frame 03 (A.30.A.88-C.20.E.03)
Series 1206-1347
Wiring harness - Electrical schematic frame 24 (A.30.A.88-C.20.E.24)
Series 1348 and above
Wiring harness - Electrical schematic frame 29 (A.30.A.88-C.20.E.29)
POWER PRODUCTION - FUEL AND INJECTION SYSTEM
2 4/7/2006
B.20.A / 123