Engine Controls System: 111031

111031 - P3107

Information saved in
DME

Fault code
111031 - P3107

Fault text
Injector, cylinder 2, low-voltage side, activation: booster
time window

Fault description
The diagnostic function monitors control-activation of the
injector's low-voltage side.

Condition for fault identification
Test condition:
The fault is recognized when the current rises too slowly.
Potential problem source(s):
- Defective wiring harness
- Defective injector
- Defective DME
Terminal condition: Terminal 15
Voltage condition:
- Onboard electrical system voltage between 9 V and 16 V
Temperature condition:
- None
Time condition:
- None
Other conditions:
- none

Condition for fault memory entry
If the fault occurs on the same cylinder 3 times in an
uninterrupted sequence, plus the debounce time of 0.5 sec.,
the diagnostic fault code is logged.

Action in service
- Check wiring harness between DME and injectors 1 and 6,
replace injector 6, if fault remains switch the new injector to
cylinder 1
- Replace DME only if the fault remains continuously

Fault effect and breakdown warning
Breakdown notice:
Engine fault
Possible apparent symptoms:
Engine runs roughly

Driver information
Warning light:
- ECE emissions warning lamp: on
- ECE electronic engine power reduction: on
- CC message: on
- US emissions warning lamp: off
- US electronic engine power reduction: off
- CC message: on

Service instruction
Injectors 1 and 6, and 3 and 4, are connected to shared DME
driver circuits. This means that diagnostic fault codes are
always logged for both injectors, although usually only one
is defective. When interchanging positions use injectors
operated by a DME driver circuit that only activates one
injector!