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What is magnasteer

In reference to my steering system warning light

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My 2006 Buick Lacrosse suddenly started pulling to the right and became very hard to steer. Then the "Charging System Failure" warning came on. What could this be?


Do you know if your vehicle has --------------------------------------------------------------------------------
Power Steering System (w/o Electro-Hydraulic Steering) or
Variable Effort Steering System
The variable effort steering (VES) system or MAGNASTEER® varies the amount of effort required to steer the vehicle as vehicle speed changes. At low speeds, the system provides minimal steering effort for easy turning and parking maneuvers. Steering effort is increased at higher speeds to provide firmer steering for increased road feel and directional stability. The electronic brake control module (EBCM) controls a bi-directional magnetic rotary actuator located in the steering rack and pinion. The EBCM varies the steering assist by adjusting the current flow through the actuator to achieve a given level of effort to steer the vehicle. The VES system accomplishes this by adding or subtracting torque on the input shaft to the rack and pinion. The main component of the system is an electromagnetic actuator, which consists of a multiple-pole ring-style permanent magnet, a pole piece, and an electromagnetic coil assembly. The VES system uses the ABS wheel speed sensor inputs to determine vehicle speed. When the EBCM senses wheel speed, it commands a current to the VES actuator that is most appropriate for each speed. The EBCM commands current from negative two amps to positive three amps to the actuator, which is polarized. At low speeds, a negative current is commanded, which assists steering. At medium speeds no current is commanded and steering is assisted by hydraulics only. At high speeds, a positive current is commanded, which creates steering resistance. Ignition voltage and ground are provided through the EBCM. The EBCM has the ability to detect malfunctions in the actuator or the circuits to the actuator. Any malfunctions detected will cause the system to ramp to zero amps and steering will be assisted by hydraulics only and set a DTC.
Are there any other lights lit on the dash ? ABS ?
DTC C0450 Steering Assist Control Solenoid/Motor/Actuator Circuit could have a diagnostic trouble code !
The electronic brake control module (EBCM) commands current from 0-1 amp to the variable effort steering (VES) actuator, depending on vehicle speed. At low speeds, 1 amp of current is commanded to the actuator and the actuator valve is fully closed. A speed increases, less current is commanded to the actuator and the valve opens, allowing pressure to bleed off through a power steering fluid orifice. The EBCM monitors and compares the Commanded and Feedback Current parameters to detect malfunctions in the VES system.
Or you could have a bad steering rack !
Charging System/Generator Fault
Refer to Charging System Description and Operation in Engine Electrical
Alternator problem maybe !
The electrical power management (EPM) system is designed to monitor and control the charging system and send diagnostic messages to alert the driver of possible problems with the battery and generator. This EPM system primarily utilizes existing on-board computer capability to maximize the effectiveness of the generator, to manage the load, improve battery state-of-charge (SOC) and life, and minimize the system's impact on fuel economy. The EPM system performs 3 basic functions:
• It monitors the battery voltage and estimates the battery condition.
• It takes corrective actions by adjusting the regulated voltage.
• It performs diagnostics and driver notification.

Nov 27, 2016 | Buick Cars & Trucks

1 Answer

2007 Pontiac Grand prix GT steering components diagram


Variable Effort Steering System Description and Operation
The Variable Effort Steering (VES) system or MAGNASTEER® Varies the amount of effort required to steer the vehicle as vehicle speed changes. At low speeds, the system provides minimal steering effort for easy turning and parking Maneuvers. Steering effort is increased at higher speeds to provide firmer steering (road feel) and directional stability. The Electronic Brake Control Module (EBCM) controls a bi-directional magnetic rotary actuator located in the steering rack and pinion. The EBCM varies the steering assist by adjusting the current flow through the actuator to achieve a given level of effort to steer the vehicle. The VES system accomplishes this by adding or subtracting torque on the input shaft to the rack and pinion. The main component of the system is an electromagnetic actuator, which consists of a multiple-pole ring-style permanent magnet, a pole piece, and an electromagnetic coil assembly. The VES system uses the ABS wheel speed sensor inputs to determine vehicle speed. When the EBCM senses wheel speed, it commands a current to the VES actuator that is most appropriate for each speed. The EBCM commands current from negative two amps to positive three amps to the actuator, which is polarized. At low speeds, a negative current is commanded, which assists steering. At medium speeds no current is commanded and steering is assisted by hydraulics only. At high speeds, a positive current is commanded, which creates steering resistance. Ignition voltage and ground are provided through the EBCM. The EBCM has the ability to detect malfunctions in the actuator or the circuits to the actuator. Any malfunctions detected will cause the system to ramp to zero amps and steering will be assisted by hydraulics only and setting a DTC.

The Magnasteer® system is a speed-dependent power steering system. The Magnasteer® system provides power assist at varying levels depending on need.
A bi-directional magnetic rotary actuator in the steering gear adjusts the amount of torque (driver effort) necessary to turn the steering wheel.
The Magnasteer® is controlled through the ABS module and varies the torque by adjusting the current flow through the actuator.
The amount of adjustment will be directly related to the vehicle speed. The controller receives speed-related input signals from the vehicle speed sensor.
For more information on Magnasteer® refer to Variable Effort Steering System Description and Operation

Is the vehicle driveable ? The steering wheel is connected to the wheels

DTC C0450 Steering Assist Control Solenoid/Motor/Actuator Circuit
Sounds like it's stuck on full assist .

Apr 25, 2017 | Cars & Trucks

1 Answer

Where is the flasher relay on a 2002 monte carlo


It's part of the hazard switch. have to take trim panel off to replace it .Apply the parking brake.
If the vehicle is equipped with a column shift, position the transaxle shift control indicator to 1.
Adjust the steering wheel for access.
Using a small, flat-bladed tool, gently remove the bezel from the ignition lock cylinder.
For the Impala, remove the right and the left access covers from the instrument panel (IP) fuse block.
For the Monte Carlo, remove the left access cover from the IP fuse block.
Remove the steering column filler. Refer to Steering Column Opening Filler Replacement .
For the Monte Carlo, open the instrument panel compartment door.
Remove the trim plate screws from the IP cluster.
Start at the left side of the IP cluster trim plate. Grasp the trim plate and carefully pull rearward. Disengage the IP cluster trim plate in order to easily access the hazard warning switch
Disconnect the electrical connectors from the hazard warning switch.
Remove the hazard warning switch from the IP cluster trim plate.


13710300-sqgggmolzf4u4c55ip0gdkvq-5-0.jpg It's probably the switch on the steering column ! An not the flasher but you never know without testing .
Turn Signal Lamps and/or Indicators Inoperative
Step
Action
Yes
No
Schematic Reference: Exterior Lights Schematics
1
Did you perform the Lighting System Diagnostic System Check?
Go to Step 2
Go to Diagnostic System Check - Lighting Systems
2
Turn the ignition to the ON position.
Place the turn signal switch to a turn left or a turn right position.
Do the turn signal tamps flash ON and OFF?
Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems
Go to Step 3
3
Disconnect the hazard switch.
Connect a test lamp between the TURN SIGNAL Fuse battery positive voltage circuit and ground.
Does the test lamp illuminate?
Go to Step 4
Go to Step 7
4
Reconnect the hazard switch.
At C201, connect a test lamp between the turn signal flasher supply circuit and ground.
Does the test lamp flash ON and OFF?
Go to Step 5
Go to Step 6
5
At C201, connect a test lamp between the turn signal flasher supply circuit of the hazard switch and inoperative turn signal lamps supply voltage circuit.
Does the test lamp flash ON and OFF?
Go to Step 9
Go to Step 8
6
Test for a high resistance or an open in the turn signal flasher supply circuit. Refer to Wiring Repairs and to Connector Repairs in Wiring Systems.
Did you find and correct the condition?
Go to Step 11
Go to Step 10
7
Repair a high resistance or an open in the TURN SIGNAL Fuse battery positive voltage circuit. Refer to Wiring Repairs and to Connector Repairs in Wiring Systems.
Did you complete the repair?
Go to Step 11
--
8
Repair a high resistance or an open in the turn signal lamps supply voltage circuit. Refer to Wiring Repairs and to Connector Repairs in Wiring Systems.
Did you complete the repair?
Go to Step 11
--
9
Replace the turn signal switch. Refer to Multifunction Turn Signal Lever Replacement - On Vehicle in Steering Wheel and Column.
Did you complete the replacement?
Go to Step 11
--
10
Replace the hazard switch. Refer to Hazard Warning Switch Replacement in Steering Wheel and Column.
Did you complete the replacement?
Go to Step 11
--
11
Operate the system in order to verify the repair.
Did you correct the condition?
System OK
Go to Step 2

Jul 21, 2012 | 2002 Chevrolet Monte Carlo

1 Answer

2005 Suzuki Forenza warning light: Right side of dash, looks like a steering wheel with exclamation point to the right of it....Power steering seems fine and fluid is full. What is this?.....Thank you!


Speed Sensitive Power Steering

(SSPS) Warning Light


Your vehicle is equipped with Speed Sensitive Power Steering (SSPS).

This is a computer-controlled power steering assist system.

The warning light you are describing will come on briefly when you turn the ignition to ON as a check to show you the bulb is working.

Then it should go out after a few seconds. If the warning light does not come on, have it fixed so it will be able to warn you if there is a problem.

If the warning light stays on, or comes on while you are driving, the SSPS system may not be working.
Your computer will need to be scanned to determine what the problem is with your SSPS system.

Jan 23, 2011 | 2005 Suzuki Forenza

1 Answer

Cadillac deville 1998 power steering /magnasteer makes noise turning


  • Check the steering fluid maybe you need to add some and also check the hose make sure there are no leaks and if the noise still there after you add a steering fluid visit a mechanic and check the hydraulic of the steering wheel.

Feb 12, 2010 | 1998 Cadillac DeVille

1 Answer

Power steering makes noise and vibrates when turning . Is this a pump problem or something to do with magnasteer ?


  • Check the Steering fluid first. and check the hose of the steering fluid make sure there is no leak. And after you add a steering fluid and still there is a noise visit a good mechanic and advise the mechanic to check the pump.

Feb 12, 2010 | 1998 Cadillac DeVille

1 Answer

At start up I get this reading on the info Panel Service steering


Hello, The (service ps mesage) usually accurs w/ the power steering presure switch failes or wire chaffs against the rear manafold heat shield. the ps presure switch is located in the high side line and reacts w/ the ac system.(cuts compressor operation durring hard turns) its usuall in the rear twards the fire wall down by the rack and pinnion.the wires usually rub through on the rack heat shield and set the illuminated mesage.hope this helps. thanks

Jun 05, 2009 | 1997 Cadillac Eldorado

2 Answers

Power steering failure


Problems with electronic variable-assist systems include all of the same things that can go wrong with a conventional power steering system (leaks, center wear in the steering gears, pump & hose failures, etc.), plus problems with the control electronics including the vehicle speed sensor circuit, the solenoid valve and control module. Accurate diagnosis, therefore, is essential to minimize warranty returns. Most of these systems provide diagnostic fault codes that can be accessed with a voltmeter, test light or scan tool to pinpoint the nature of the fault (if the fault is electronic rather than mechanical or hydraulic).

If power to the solenoid or control valve actuator is lost, the valve keeps the bypass circuit closed so full power assist is provided under all driving conditions. The only indication of trouble, therefore, might be a loss of road feel and/or increased steering sensitivity at highway speeds.

It’s important to remember that variable-rate power steering only reduces the amount of pressure that reaches the steering gear at higher road speeds. The only way it could reduce power assist at low speed would be in the unlikely event the actuator or solenoid valve failed in the open position. This could cause a noticeable reduction or loss of power assist.

On GM’s Magnasteer racks, loss of current to the magnetic coils would cause a loss of power assist at low speed. Coil resistance can be checked with an ohmmeter, and should read about two ohms. An infinite (open) reading indicates a bad coil (requires replacing the rack since the coils are not serviceable). Checking for shorts between both sides of the coil assembly and rack housing is also recommended.

The system does have self-diagnostic capability, but there is only one fault code: C1241 (Magnasteer circuit malfunction). The code is set if the module detects an open or a short in the coil circuit. If this code is present, the Magnasteer system is disabled and will not vary the steering effort as vehicle speed changes. The C1241 body code can be read with a Tech 2 or equivalent scan tool. The Tech 2 tool can also be used to perform a Magnasteer function test. The test varies the current to the coil so you can check for a change in steering effort when turning the steering wheel.

Replacement racks for variable-assist power steering applications are available with or without an EVO control solenoid. As long as the original EVO control solenoid is working OK, it can be removed and installed on the replacement rack to save your customer a few bucks. There’s no need to replace the whole rack if only the EVO solenoid valve is defective.

On GM Magnasteer applications, the whole rack must be replaced if the rack or control unit is defective because the Magnasteer unit is part of the rack. Handle with care because the permanent magnets inside the Magnasteer valve assembly and connector are fragile and can be easily damaged.

Good luck and hope this helps you understand the Steering system on your STS to save you some money on what to look for and what to look out for if your going to have a auto shop repair it. Such as the Valve is replaceable and it may just be a bad wire connection.



May 22, 2009 | 2002 Cadillac Sts

1 Answer

Loss of power steering


If memory serves me correctly... the 05 deville is equipped with "Magnasteer" the electical connector at the rack and pinion is not a pressure sensor unless its on the line itself. The system operates by inducing voltage to magnets in the rack to make turning easier at lw speeds while adding resistance at higher speeds for added control and less drift. Check for any codes on your climate control by pushing "off and warmer" at the same time with the engine off, key on. Google the codes and see if any relate to the steering system and repost! I hope that helps!

Mar 09, 2009 | 2005 Cadillac Deville

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