Specifications

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GENERAL OPERATION
INTRODUCTION
The Peugeot Immobiliser systems are made up of 3 different types.
They all perform various functions, and it is important to understand
the basic configuration and the types of systems fitted.
IMM– STANDARD IMMOBILISER
This system was the first transponder system fitted to the Peugeot
range of vehicles, after the keypad system was phased out. The sys-
tem is a basic electronic control unit which consists of immobiliser
unit, and transponder aerial to pick up the transponder signal code.
This system is similar to the GM immobiliser system, and is pro-
grammed and diagnosed in much the same way.
CPH—PASSENGER COMPARTMENT PROTECTION CONTROL UNIT
The next generation of Immobiliser and alarm system produced was
the CPH system which controls a number of additional components
which further enhances the vehicle protection system. These include
central door locking, ultrasonic sensors to name a few.
This system is programmed in much the same way, but offers addi-
tional functionality on live data and actuators functions.
BSI—BODY SYSTEMS INTERFACE
This is the latest system, and the alarm and immobiliser have now
been incorporated into the body control unit, which controls all body
units, including wipers, indicators, lights, doors, windows, locks,
boot, service interval, horn, etc.
Again, with all the BSI because the immobiliser is part of a compli-
cated system there are many more functions included, on actuators,
special functions and live data.
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