53
Hall senders G40 and G163
To permit cylinder-selective knock control and
sequential injection, cylinder 1 must be
defined precisely.
The signal which Hall sender G40 supplies
together with the signal which engine speed
sender G28 generates (incremental sender for
engine speed and reference mark) enable
ignition TDC of cylinder 1 to be identified
(synchronization of cylinder 1).
After the simultaneous input of both signals,
initial injection and ignition are enabled.
By using Hall senders G163 and G40 as
camshaft sensors, the adjustment of both
camshafts can be monitored closely and
evaluated by the self-diagnosis.
Substitute function and self-diagnosis:
If Hall sender G40 fails, Hall sender G163 takes
on the task of synchronising first cylinder.
If both Hall senders fail, it is possible to start
the engine and the engine runs with substitute
functions.
On V-engines with variable valve
timing, a Hall sender acting as a
camshaft sensor is attached to the
left- and right-hand cylinder banks.
SSP 198/35
Hall sender G40
Hall sender G163
Summary of Contents for 2.7-litre V6 Biturbo
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