4
Identification and causes of failure / corrective action
Failure identification
Electronic control unit ERM
6057 758 101 - 2005-02
38
Failure identification
Causes
Corrective action
LED Ø contr. flashes
➢
Repeat setting procedure
(operating mode “controlled
(see page 28)
with Ø sensing”)
LED Ø contr. flashes
➢
Repeat setting procedure
(operating mode “controlled
(see page 33)
with Ø calculation”)
“Power” LED does not
No operating voltage or too low
➢
Check operating voltage
light up
ERM fuse is defective
➢
Replace defective fuse
Program does not run correctly
➢
Consult ZF
All 3 LED lights will flash
Operating voltage too low or too high
➢
Check operating voltage
(sequentially)
Reference voltage too low
➢
Check load resistance
Short-circuit or interruption at current
➢
Correct short-circuit /
output, or coil is bridged
interruption
Missing size
➢
see operating mode, setting of
DIL switches (see page 18)
