6. TROUBLESHOOTING
IMSRM04-E8
73
6.2 Error Code Descriptions (Identifier: ER)
When the following errors have occurred, replace or request repair for the controller in which the
error has occurred. (The module that has the FAIL lamp lit.)
Error code data
Data
Description
Explanation
0
Operations normal
1
Back-up data check error
The control data has been destroyed or written
wrongly
2
RAM read/write error
Problem with the system RAM
3
System structure error
The system structure has been changed
4
Internal communications error
Abnormality in the internal communications
5
A/D converter error
Problem with the A/D converter
6
Adjustment data error
The adjustment data has been written wrongly
Presumed causes of occurrence:
a) When errors 1, 2 or 5 have occurred, a breakdown in the RAM, ROM or A/D converter should be
suspected.
b) Error 3 occurs when the module structure is different from the initial structure. An example would
be if a module is replaced by a different model of module. In this situation, replace with the same
model of module. Further, this error will also occur when module initialize has not been carried
out after changing the module structure.
c) Error 4 occurs in the situation where a module is removed while the power is still on, etc.
d) If errors 5 or 6 occur, there is a possibility that too much noise, surge or strong shock has been
applied to the control unit.
