Engine Controls System: 110502

110502 - P3118

Information saved in
DME

Fault code
110502 - P3118

Fault text
Injector, cylinder 5, activation: low-voltage side; short
circuit to positive

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 a short circuit to positive is
present.
Potential problem source(s):
- Defective wiring harness
- Defective injector
- Defective DME
Terminal condition: none
Voltage condition:
- Onboard electrical system voltage between 9 V and 16 V
Temperature condition:
- None
Time condition:
- None
Other conditions:
- Engine ON

Condition for fault memory entry
The diagnostic fault code is entered when the fault occurs 3
times in sequence with no interruption on a single cylinder.

Action in service
- Check wiring harness between DME and injectors 3 and 4,
replace injector 3, if fault remains switch the new injector to
cylinder 4
- Replace DME only if the fault remains continuously

Fault effect and breakdown warning
Breakdown notice:
Engine fault
Possible apparent symptoms:
Engine runs roughly and can stall in extreme cases

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

Service instruction
N20: Injectors 1 and 2, 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.
N55: 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!