9-5 (9600) L4-2.3L Turbo (B235) HO (2003)
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The TC/ABS/ESP control module sends bus message "Wheel speed, front right, XXX km/h" via the P-bus to the Trionic control module connection 19
and 66. This speed signal is used to:
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prevent adaptation of idle speed control when the car is moving.
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on manual gearboxes, determine which gear is currently being used. This makes it possible to limit torque in gears R and 1 and activate fuel
shut-off in gears 2, 3, 4 and 5. Control of the SHIFT UP lamp also depends on the current gear.
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activate speed limitation, which is achieved by limiting the maximum air mass/combustion at 240 km/h for B235E and 250 km/h for B235R.
Diagnostics
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If the speed message is missing, DTC P0502 is generated.
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If the speed value is implausible, diagnostic trouble code P0501 will be generated.
System reaction to a fault
