Suspension - Selective Ride Control: Operation

When vehicle is first started, SERVICE RIDE CONTROL indicator should illuminate to show that indicator circuit is operating. Indicator will stay on if ignition is turned from OFF or LOCK to ON position 3 times without vehicle moving. Indicator will turn off when speed sensor signal is received indicating vehicle movement. Indicator will activate if a system failure exists.

SRC control module receives input signals from selective ride control switch, vehicle speed sensor and position feedback sensors (located on each shock absorber). SRC control module then provides power to electronic actuators. Motor in electronic actuator rotates shock absorber shaft to alter orifice size for dampening adjustment. Shock absorber shaft location is indicated by position feedback sensor.

SRC control module receives power when ignition is turned to ON or START position. Immediately after ignition is turned on, SRC control module performs self-check of system. If system is operating correctly, SRC control module will activate electronic actuators so dampeners in shocks are set at a 60 degree position. If system is defective, SRC will ground the circuit and activate SERVICE RIDE CONTROL indicator.

SRC control module determines position of dampener by counting pulses on position feedback sensor. Once signal is detected, SRC control module adjusts dampeners according to selection on selective ride control switch.

SRC control module may store system trouble codes if system failure exists. Trouble codes can be read to determine what part of system failed. Trouble codes cannot be read with vehicle moving.