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2013-14 Shelby GT500
PP Electronic Shock resistors
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<blockquote data-quote="Snoopy49" data-source="post: 15984826" data-attributes="member: 138649"><p>It's like BiminiLX said, you unplug the PP shocks and they default to the Sport (go-cart) mode.</p><p>Are you replacing the shocks?</p><p></p><p>Solenoid coil resistance should be between 2.8 an 4.5 ohms.</p><p></p><p>From the 2014 Factory Service Manual:</p><p></p><p><strong>Vehicle Dynamic Suspension </strong></p><p></p><p>The VDM is connected to the HS-CAN to communicate with the ABS module, the PCM and other systems. The VDM also monitors the solenoid circuits and sets DTCs when a concern with a circuit or a solenoid is detected. The ride control switch is hardwired to the PCM. Pressing the switch sends a signal to the PCM which then sends a message to the IPC over the HS-CAN . The IPC relays that message to the VDM and the VDM adjusts the valve solenoids as requested.</p><p></p><p>The two modes are Sport (off) and Normal (on). Normal mode is activated by applying constant voltage and varying the PWM duty cycle to get the desired current. When the current is applied, the solenoid magnet opens a sliding valve allowing fluid to flow through the "comfort" piston. This results in a more compliant (softer) suspension feel. Sport mode is activated by removing the voltage from the valve solenoid.</p><p></p><p>During an ESC event, the ABS module will send messages to the VDM over the HS-CAN requesting suspension adjustment to aid in maintaining vehicle stability. Also, the VDM will monitor vehicle speed and when a certain vehicle speed is achieved, the VDM will change to sport mode to aid in maintaining vehicle stability.</p><p></p><p> </p><p><strong>Component Description </strong></p><p></p><p><strong>Vehicle Dynamics Module (VDM) </strong></p><p></p><p>The VDM monitors inputs and HS-CAN messages that relate to the vehicle dynamic suspension and then directly controls the valve solenoids. The VDM sends an individual electrical current to each valve solenoid to control the amount of damping required.</p><p></p><p>When a new VDM is installed, the module must be programmed with the vehicle configuration information.</p><p></p><p><strong>Valve Solenoid </strong></p><p></p><p>The valve solenoid is a PWM controlled solenoid that controls a sliding valve inside the damper.</p><p></p><p><strong>Ride Control Switch </strong></p><p></p><p>The ride control switch is a bank of 3 press and release switches, one is for suspension, one is for steering and one is for launch control.</p></blockquote><p></p>
[QUOTE="Snoopy49, post: 15984826, member: 138649"] It's like BiminiLX said, you unplug the PP shocks and they default to the Sport (go-cart) mode. Are you replacing the shocks? Solenoid coil resistance should be between 2.8 an 4.5 ohms. From the 2014 Factory Service Manual: [b]Vehicle Dynamic Suspension [/b] The VDM is connected to the HS-CAN to communicate with the ABS module, the PCM and other systems. The VDM also monitors the solenoid circuits and sets DTCs when a concern with a circuit or a solenoid is detected. The ride control switch is hardwired to the PCM. Pressing the switch sends a signal to the PCM which then sends a message to the IPC over the HS-CAN . The IPC relays that message to the VDM and the VDM adjusts the valve solenoids as requested. The two modes are Sport (off) and Normal (on). Normal mode is activated by applying constant voltage and varying the PWM duty cycle to get the desired current. When the current is applied, the solenoid magnet opens a sliding valve allowing fluid to flow through the "comfort" piston. This results in a more compliant (softer) suspension feel. Sport mode is activated by removing the voltage from the valve solenoid. During an ESC event, the ABS module will send messages to the VDM over the HS-CAN requesting suspension adjustment to aid in maintaining vehicle stability. Also, the VDM will monitor vehicle speed and when a certain vehicle speed is achieved, the VDM will change to sport mode to aid in maintaining vehicle stability. [b]Component Description [/b] [b]Vehicle Dynamics Module (VDM) [/b] The VDM monitors inputs and HS-CAN messages that relate to the vehicle dynamic suspension and then directly controls the valve solenoids. The VDM sends an individual electrical current to each valve solenoid to control the amount of damping required. When a new VDM is installed, the module must be programmed with the vehicle configuration information. [b]Valve Solenoid [/b] The valve solenoid is a PWM controlled solenoid that controls a sliding valve inside the damper. [b]Ride Control Switch [/b] The ride control switch is a bank of 3 press and release switches, one is for suspension, one is for steering and one is for launch control. [/QUOTE]
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