Fault Finding On The Aci 100 Ignition System; Principle Of Fault Finding - PEUGEOT ACI -100 Workshop Manual

FAULT FINDING ON THE ACI 100 IGNITION SYSTEM

The principle is identical to fault finding on a conventional ignition with in addition, diagnostic
possibilities given by the lighting up of an LED on the instrument panel.
1.
CHECK THAT A SPARK IS PRODUCED BY THE SPARK PLUG
a) If spark is present
b) If there is no spark
2.
CHECK THE LED DIAGNOSIS
a) The LED shows diagnosis
Refer to the TRANSPONDER LED DIAGNOSIS table (page 7)
b) The LED does not function
Check its wiring connections on the instrument panel:
- Red wire : supply + 12V permanent supply
- Blue wire : connection to the ACI 100 ignition unit terminal (6)
Check the LED: connect a 12V supply to the instrument panel in place of the red and blue wires
(Do not connect the LED alone to the 12V supply. The presence of two protective resistors is
compulsory).
c) The LED does not supply a diagnosis:
First of all check the standard causes of a fault in the ignition system:
- Interruption in wiring
- Components (spark plugs, interference suppresser, coils, flywheel...)
- Lastly check the specific ACI 100 ignition components
When replacing an ACI 100 ignition unit it is essential to check that the ignition is turnin,g
when idle at (2000 rpm) before going ahead with the key memorisation procedure.
The procedure for memorising the keys creates a definitive link between the ACI 100 unit and the
master key, which makes it impossible to use them separately.
6

PRINCIPLE OF FAULT FINDING

WHAT TO DO IN THE EVENT OF A FAULT
the problem does not concern the ignition
the problem does concern the ignition
WARNING