User Manual

Chapter 10
BOSCH HDI EDC 15C2 INJECTION SYSTEM AND PARTICLE FILTER
77
XI - THROTTLE HOUSING CONTROL ELECTROVALVE (EGR) (1263)
A - ROLE
The electrovalve controls the closing of the throttle housing (EGR).
B - DESCRIPTION
Warning: The throttle housing is open when it is not controlled pneumatically.
Operating phases with particle filter regeneration assistance:
• engine at low load: the throttle housing is closed (controlled) (**) (depending on
exterior temperature),
• engine at mid load and full load: the throttle housing is open (not controlled).
(**) the engine only lets in heated air.
The electrovalve has a 2 way black connector.
XII - BUILT-IN SYSTEMS INTERFACE (BSI1)
A - ROLE
The BSI performs the following operations:
• it transmits information from the fuel additive ECU to the injection ECU,
• it transmits information from the injection ECU to the fuel additive ECU,
• it informs the driver of the status of the pollutant particle filtration system,
• it reinitialises the system after a maintenance operation.
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