Speed Sensitive Steering (SSS)

SPEED SENSITIVE STEERING (SSS)






The CCR/SSS Control Module regulates the amount of steering assist at a given vehicle speed by driving the steering assist solenoid valve with the correct PWM duty cycle. The amount of steering assist decreases with increasing duty cycle. See image for a typical duty cycle vs. speed curve. The CCR/SSS Control Module constantly monitors the steering assist solenoid valve PWM drive for correct activity. At times, the CCR/SSS Control Module expects the output to be high (on) and at times it expects the output to be low (off). At other times, the CCR/SSS Control Module expects the output to cycle between high and low levels. If the expected level or cycling is not detected, the CCR/SSS Control Module stores error code 35, activates the "SERVICE CCR"/ "SERVICE SSS" telltale lamp and de-activates the steering assist drive. Recovery of the steering assist output fault will occur if normal activity is detected after a 30 second delay.