Anyway to adjust the electric assist in the steering. I can't stand how heavy the steering is in my 13' PP. Can Fords IPS tool change it? Forescan?
Does the assist vary with speed, or is it heavy at all speeds? Might be an electrical issue or a sensor issue, so check codes first. Also, battery good?
Electronic Power Assist Steering (EPAS) System
The Electronic Power Assist Steering (EPAS) system provides power steering assist to the driver by replacing the conventional hydraulic valve system with an electric motor coupled to the steering rack by a toothed belt. The motor is controlled by the Power Steering Control Module (PSCM) that senses steering effort/use through the use of a torque sensor which is mounted near the input shaft of the steering gear. Steering assist is provided in proportion to the steering input effort and vehicle speed.
The EPAS system requires a 12-volt, hot at all times feed for system operation. The PSCM is activated when power is applied to the hard-wired ignition/run input. After activation, the PSCM monitors the High Speed Controller Area Network (HS-CAN) bus to determine if the vehicle is operating in a manner capable of supporting the EPAS system.
Once this is determined, vehicle speed sent by the PCM over the HS-CAN bus, steering shaft speed and direction sent by the torque sensor and steering wheel angle/position determined by the motor position all provide the necessary information for the PSCM to determine the amount or level of assist provided by the EPAS system.
Assist is primarily based off of vehicle speed. As vehicle speed increases, the amount of assist provided by the system is decreased to improve and enhance road feel at the steering wheel. As vehicle speed decreases, the amount of assist provided by the system is increased to ease vehicle maneuvering. If the vehicle speed is missing or out of range, the PSCM defaults to a safe level of assist for all driving conditions. If the vehicle speed returns to the correct in-range values, the PSCM will adjust the level of assist accordingly. Steering wheel/shaft speed, torque and direction information will allow the PSCM to determine how much assist is needed to turn the wheels right and left.
The PSCM is self-monitoring and has the capability of setting and storing DTCs. Depending on the DTC set, the control module will enter into a "safe mode" of manual steering. In addition, the PSCM may send a request to the Instrument Panel Cluster (IPC) module over the HS-CAN bus to display a message in the message center to alert the driver of a potential EPAS concern.
X2 ON ^^.How many miles on your SHO?
https://ford.oemdtc.com/1752/15s18-reprogram-power-steering-control-module-and-steering-gear-extended-coverage-2011-2013-ford-lincoln-mercury/2 (https://ford.oemdtc.com/1752/15s18-reprogram-power-steering-control-module-and-steering-gear-extended-coverage-2011-2013-ford-lincoln-mercury/2)
http://www.revbase.com/BBBMotor/Tsb/Results?Year=2014&Make=54&Model=22913 (http://www.revbase.com/BBBMotor/Tsb/Results?Year=2014&Make=54&Model=22913)
Car has 41k. No codes. It's always been crappy from day 1 The assist is working. When I talked to a service writer about it the first time my car went to the dealer he mentioned that the PP SHO efforts are much higher. Assist stays pretty much the same feel. The system is working.
Quote from: Vortech347 on September 18, 2017, 10:24:38 AM
Car has 41k. No codes. It's always been crappy from day 1 The assist is working. When I talked to a service writer about it the first time my car went to the dealer he mentioned that the PP SHO efforts are much higher. Assist stays pretty much the same feel. The system is working.
I also think the steering ratio is in play, I have a non-pp and turn to lock is hideous... it is my #1 dislike for my rocket ship.
As far as i could tell there is not a way to adjust this.
Yeah they do drive like and lock to lock turn like a tank.
I can get that and tolerate all that. Its the steering wheel return I dont like.
The SHO is my DD and the steering wheel does not feel that tight but just right,and maybe something you get accustomed too. Dunno. Z
I did rent a new Cadillac for a week and after driving that the wheel felt very loose because of the front wheel drive. Z
Bump. Anyone play with this on Forescan?
Update. Tossed in the hex code to a non PP SHO. I like the steering better. The assist is greater. I'm tempted to try the limited code next.
Here is a standard SHO Hex code.
If you want the PP SHO code I can post that too.