How does a power steering system diagnose a problem?
Most electric power steering systems are able to self-diagnose any faults, with the use of diagnostic trouble codes (DTC). In the EPS system, the codes would be located within the ECU and when the time came for finding the root cause of the problem, a specialised scan tool would be used to find and decipher all the DTC’s.
Where is the power steering control module located?
In another configuration, the EPS assembly is inserted between the steering wheel and the steering rack (see photo above). No matter what the configuration, the power steering control module receives inputs from a steering position sensor and a steering torque sensor that is mounted on the steering rack input shaft.
How do you remove a power steering unit?
Most power steering control units are only accessible when the lower dashboard covers are removed. Step 6: Remove the bolts attaching the steering column to the vehicle. On most domestic and imports, the steering column is attached to a housing that is secured to the firewall or the vehicle’s body.
What is the Bulletin for no power steering?
GM has issued a service bulletin #16-NA-004 to address Multiple intermittent instrument panel warning lights, no power steering, a Service Power Steering Message on the Driver’s Information Center, Check engine light on and multiple data bus U trouble codes. The bulletin applies to the vehicles listed below.
Can a power steering control module be lost?
In other words, the steering control module will decide if turning the steering wheel a complete revolution will turn the wheels ten degrees or thirty degrees. It should be noted that erratic operation of the steering system or loss of steering ability is not common, but is possible. Can I drive with a bad Power Steering Control Module?
GM has issued a service bulletin #16-NA-004 to address Multiple intermittent instrument panel warning lights, no power steering, a Service Power Steering Message on the Driver’s Information Center, Check engine light on and multiple data bus U trouble codes. The bulletin applies to the vehicles listed below.
What are the parts of an electric steering system?
The module contains the drivers, signal generators and MOSFET switches that power and control the electric motor. The module also contains a current monitor circuit that measures the amps the motor is using.
When do you need to know your power steering system?
On some systems, if the module is replaced or the toe has been changed, the end stops of the steering system must be learned so the motor does not push the rack past the maximum steering angle. This might be an additional step on top of calibrating the steering angle sensor.