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AJ-V8/5HP24
57
Engine Management
CRUISE CONTROL VACUUM SYSTEM
Reservoirs
Check Valve
VSV 1
303-121
Stability/Traction Control
If the CAN- TORQUE REDUCTION THROTTLE
message from the brake control module requests
torque reduction, the ECM reduces the throttle
valve opening. It also changes the CAN-
TRACTION ACKNOWLEDGE message to confirm
that torque reduction is in progress.
Engine Power Limiting
If the TCM detects a fault in the transmission, it
changes the CAN- TRANSMISSION OVERLOAD
message to request an engine torque limit. The
ECM then limits throttle valve opening to 18˚
maximum in all forward gears.
Vehicle Speed Limiting
The ECM uses throttle control to limit the
vehicle's maximum speed to 248 km/h (155
mph).
Reverse Gear Torque Reduction
When reverse gear is selected the CAN-
TRANSMISSION OVERLOAD message from the
TCM requests an engine torque limit. The ECM
then limits throttle valve opening to 18˚
maximum.
VSV 2
VSV 3