Fiat Punto 2004 Training Manual page 383

ELECTRIC
SYSTEM
Diagnostic architecture
The situation of the diagnostic architecture, both as regards the control units integrated to the
CAN network (nodes) and the ones not equipped with a CAN interface, is summarized in the
table below:
System / node
Tyre pressure control unit
Audio amplifier
Rain sensor control unit
System / node
Sunroof control unit
Airbag node
Body Computer node
Air conditioner node
Convergence node
Instrument board node
Radio receiver node
Parking sensor node
Auxiliary heater node
Engine control node
Robotized gearbox node
Braking node
Electric drive node
Yaw sensor node
Some control units and nodes are indicated as "diagnosis-free", despite their featuring self-
diagnosis functions (e.g. rain sensor control unit): in fact, they do not feature any implemented
diagnostic protocol, and their errors (if any) are detected through the diagnosis of other control
units (e.g. BCM).
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FIAT PUNTO TRAINING OUTLINE
Bus
B-CAN
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LIN
Bus
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B-CAN
B-C CAN
B-CAN
B-CAN
B-C CAN
B-CAN
B-CAN
B-CAN
B-CAN
C-CAN
C-CAN
C-CAN
C-CAN
C-CAN
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Diagnosis Communication
YES B-CAN
NO /
NO /
Diagnosis Communication
No /
YES B-CAN
YES B-C CAN
YES B-CAN
YES B-CAN
B-C CAN
YES B-CAN
NO /
YES B-CAN
YES B-CAN
YES C-CAN
YES C-CAN
YES C-CAN
YES C-CAN
NO /
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