AUMT1416SEC5

Typically a flow control valve allows for a flow of _______________ gallons per minute.

3 to 5

A typical air bag deployment time is:

40 milliseconds

A power recirculating ball steering gear has excessive kickback on the steering wheel. The most likely cause of this problem is:

A defective poppet valve in the steering gear.

A customer says his front-wheel-drive car with power rack and pinion steering is hard to steer for several minutes the first time the car is driven during the day. Technician A says the cause of the problem could be a plugged spool valve spring. Technician B says the cause of the problem could be a scored steering gear cylinder. Who is correct?

B only

Power rack and pinion steering gear operation are being discussed. Technician A says the position of the rotary valve inside the spool valve directs the fluid to the appropriate side of the rack piston. Technician B says during a right turn, fluid is directed to the right side of the rack piston and the rack is moved to the left. Who is correct?

B only

All of the following statements about multi-ribbed belts made of EPDM are true EXCEPT: a. EPDM belt is more elastic than a standard neoprene belt and resists cracking even at higher mileage. b. EPDM belts are designed to last 50,000-60,000 miles. c. Belts are designed to have clearance between the rib peaks and the pulley grooves. d. EPDM belt to gradually lose material on the ribbing similar to the way a tire wears.

EPDM belts are designed to last 50,000-60,000 miles.

A power recirculating ball steering gear experiences excessive steering effort while parking. The most likely cause of this problem is:

Excessive torque on the worm shaft adjuster plug locknut.

In electronic variable orifice (EVO) steering systems:

Full power steering assistance is provided if the vehicle speed is below 10 mph (16 km/h) and steering wheel rotation is above 15 rpm.

A rack and pinion steering gear:

Has tie rods that connect the rack directly to the steering arms.

During slow driving there is a need of _______________ fluid flow but a need for _______________ pressure.

low, high

Starting with the steering wheel how is the steering force applied, and in what order, to the wheels?

Steering wheel, steering shaft, pinion gear, rack, tie rods, steering knuckles.

When a vehicle with a power recirculating ball steering gear is making a right turn:

Torsion bar twisting and spool valve movement has moved the spool valve and aligned the pressure ports with the right-turn ports.

A hydroboost power steering system:

Uses pressure from the power steering pump to provide brake boost.

In a hybrid electric vehicle (HEV) electrical system with a electrohydraulic power steering system (EHPS), a diagnostic trouble code (DTC) with U prefix represents a fault in the:

Vehicle network.

There is air in the power steering fluid. To correct this problem, you should:

With the engine running, turn the steering wheel full left and right.

In a center take-off power rack and pinion steering gear, the tie rods are attached to:

a moveable sleeve

When diagnosing and servicing tie rod ends:

If the turning torque on a rubber-encapsulated tie rod end is less than specified, the tie rod end must be replaced.

If the lock-to-lock steering wheel rotation is 3.25 turns and the total front wheel movement is 78 degrees the steering ratio is:

15:1

Technician A says the tie rods in a rack and pinion steering system should be parallel to the lower control arms. Technician B says a rack and pinion steering linkage has more friction points than a parallelogram steering linkage. Who is correct?

A only

When diagnosing an active steering system with a scan tool: Technician A says if the DTC's first letter is a C it indicates it is related to a chassis problem. Technician B says that when the DTC's second digit is a 1 the DTC is a universal code. Who is correct?

A only

While discussing power rack and pinion steering gears: Technician A says power steering fluid should be inspected for discoloration and contamination with metal particles. Technician B says after flushing and refilling the power steering system, it is not necessary to perform an air bleeding procedure. Who is correct?

A only

The most likely result of a power steering drive-belt that is worn is:

Belt slipping

A customer says his or her steering has a shimmy problem above 50 mph (80 km/h). Preliminary inspection indicates excessive wear on the right front tire. Technician A says the problem could be a worn tie rod end. Technician B says the problem could be a worn idler arm ball joint.

Both A and B

Power recirculating ball steering gear operation is being discussed. Technician A says when driving the vehicle straight ahead, the spool valve and rotary valve position directs the power steering fluid flow back through the return hose to the pump inlet. Technician B says when driving the vehicle straight ahead, the power steering pump pressure is low. Who is correct?

Both A and B

Technician A says an oil leak at one rack seal may result in oil leaking from both boots. Technician B says the inner rack seal is defective if oil leaks from the pinion end of the housing when the rack reaches the left internal stop. Who is correct?

Both A and B

When diagnosing a 4WAS with a scan tool: Technician A says the CAN diagnostic monitor indicates if transmit/receive communication is satisfactory. Technician B says that during the active tests the scan tool activates specific system components. Who is correct?

Both A and B

While discussing power rack and pinion steering gears: Technician A says inner rack seal leaks can cause power rack and pinion steering to turn easier in one direction than another. Technician B says a hissing noise is normal when the steering is turned to the limit on either side. Who is correct?

Both A and B

While discussing steering gear removal and replacement on air-bag-equipped vehicles: Technician A says the steering column should be locked in the centered position to prevent air bag clock spring damage. Technician B says that an index mark should be placed on the lower universal joint and steering gear pinion shaft. Who is correct?

Both A and B

While servicing a steering column on an air-bag-equipped vehicle the system must be disarmed by:

Disconnecting the battery for manufacturer specified amount of time.

During normal power steering pump operation:

During normal power steering pump operation:

The clock spring electrical connector:

Maintains electrical contact between the air bag inflator module and the air bag electrical system.

In a power rack and pinion steering gear the breather tube:

Moves air from one boot to the other during a turn.

The flow control valve controls pressure by regulating:

The volume of flow

A pull, wandering, or poor straight-ahead tracking may be caused by all of the following EXCEPT: a. Worn or loose rack mounting bushings. b. Rack piston seal leaks. c. Binding spool valve. d. Loose or worn tie rod ends.

b. Rack piston seal leaks

An active steering column has all of these components EXCEPT: a. A pyrotechnic actuator. b. A section of energy-absorbing steel. c. A telescoping cylinder. d. A pull-out pin that allows easier column collapse.

c. A telescoping cylinder

The clamp opening in a tie rod sleeve must be positioned away from the ______ in the tie rod sleeve.

slot

A power steering system has the specified pressure with the pressure gauge valve closed or with the pressure gauge valve open and the engine running at 1 , 000 and 3 , 000 rpm . The power steering pump pressure is lower than specified with the front wheels turned fully in either direction. The cause of this problem could be:

A defective steering gear

A power steering system experiences repeated belt failures with normal power steering system operation. The most likely cause of this problem is:

A misaligned power steering pump pulley

A vehicle has continual excessive steering effort, but there is no noise and the fluid level in the reservoir is correct. Technician A says the cause of the problem could be a stuck flow control valve. Technician B says the cause of the problem could be air in the power steering fluid. Who is correct?

A only

When performing a Learn Rear Wheel Alignment procedure: Technician A says the steering wheel must be centered. Technician B says during this procedure the front wheels must be lifted off the shop floor. Who is correct?

A only

While discussing power steering pump leaks: Technician A says leaks at the drive shaft seal will leave a wet and oily pump pulley back. Technician B says leaks at the drive shaft seal may leave oil on the hood pad above the pump. Who is correct?

A only

While discussing power steering system draining, flushing, refilling, and bleeding: Technician A says the return hose from the remote reservoir should be disconnected at the remote reservoir to drain the fluid. Technician B says the return hose should be loosened at the remote reservoir with the engine running to bleed air from the power steering system. Who is correct?

A only

While discussing steering effort: Technician A says a tight rack bearing adjustment may cause excessive steering effort. Technician B says a loose inner tie rod end may cause excessive steering effort. Who is correct?

A only

While discussing steering wheel removal: Technician A says a steering wheel should be marked in relation to the steering shaft. Technician B says the steering wheel should be grasped firmly with both hands and pulled from the shaft.

A only

While discussing idler arms:

A partially seized idler arm bearing increases steering effort.

In a power recirculating ball steering gear, kickback is prevented by:

A poppet valve in the pressure inlet fitting.

A vehicle experiences repeated ruptures of the high-pressure power steering hose. The most likely cause of this problem is:

A pressure relief ball sticking closed

A power recirculating ball steering gear experiences hard steering for a short time after the vehicle sits overnight. The most likely cause of this problem is:

A restricted power steering return hose.

A power steering pump has the specified pressure with the pressure gauge valve closed. However, with this valve open, the pump does not have the specified pressure difference between the pressure readings at 1 , 000 and 3 , 000 rpm . The cause of this problem could be:

A sticking flow control valve.

A rattling noise in the steering column and linkage may be caused by:

A worn steering shaft U-joint

A customer says the steering on his or her vehicle is very hard to turn in both directions. A preliminary inspection reveals no problems with the manual rack and pinion steering gear. Technician A says the problem could be a misaligned steering column. Technician B says the problem could be tight or frozen tie rod ends. Who is correct?

Both A and B

A power recirculating ball steering gear has a fluid leakage problem, and fluid appears on the top of the gear. Technician A says the side cover O-ring seal may be leaking. Technician B says the high pressure line fitting on the gear may be leaking. Who is correct?

Both A and B

Technician A says the pinion gear spool valve can bind or stick causing fluid to be directed to the power rack piston chamber causing a drift or pull to one side. Technician B says that a front tire with excessive conicity can cause the vehicle to pull or drift to one side and is often referred to as a radial tire pull. Who is correct?

Both A and B

While discussing collapsible steering column damage: Technician A says if the vehicle has been in a frontal collision, the injected plastic in the column jacket, gearshift tube, and steering shaft may be sheared. Technician B says after a collision, some steering columns may be shifted on the bracket. Who is correct?

Both A and B

While discussing power recirculating ball steering gear service: Technician A says steering wander may be caused by a loose sector lash adjustment. Technician B says a loose sector lash adjustment may cause reduced feel of the road. Who is correct?

Both A and B

While discussing power steering belt adjustment: Technician A says that all belt drive components are closely integrated and each depends on the belt and tensioner to keep the entire system at optimum operating performance. Technician B says a loose power steering pump drive belt may cause the steering wheel to jerk while turning. Who is correct?

Both A and B

While discussing steering wheel free play: Technician A says excessive steering wheel free play may be caused by a worn outer tie rod end. Technician B says excessive steering wheel free play may be caused by loose steering gear mounting bushings. Who is correct?

Both A and B

Many collapsible steering columns have:

Plastic pins in the two-piece outer jacket.

A vehicle experiences excessive, erratic steering effort with a squealing noise. The most likely cause of this problem is:

Power steering pump drive belt slipping on the pulley.

If an electrical defect occurs in a 4WS system the:

Rear wheels remain in the centered position

In a parallelogram steering linkage, the tie rods are parallel to the lower control arms to:

Reduce toe change during upward and downward front wheel movement.

On a rack and pinion type steering system, the best way to inspect the inner tie rod for wear with the wheels:

Removed from the vehicle and the outer tie rod disconnected

An idler arm has 5/8 in. (15.8 mm) vertical movement. To correct this problem it is necessary to:

Replace the idler arm assembly.

On the steering arm the tapered attachment hole for the tie rod is out of round. The correct repair for this condition is to:

Replace the steering arm and knuckle assembly

While driving with the front wheels straight ahead with a power recirculating ball steering gear:

The fluid pressure on each side of the ball nut piston cushions road shocks from reaching the steering wheel.

A power recirculating ball steering gear has a rattling noise while driving the vehicle. The most likely cause of this problem is:

Worn flexible coupling in the steering shaft.

All of these statements about power recirculating ball steering gear defects are true EXCEPT: a. A worn steering shaft U-joint may cause a growling noise when turning the front wheels. b. Excessive steering effort may be caused by a defective power steering pump. c. Excessive steering effort may be caused by a scored steering gear cylinder. d. Steering wheel jerking when turning may be caused by a slipping power steering belt.

a. A worn steering shaft U-joint may cause a growling noise when turning the front wheels

All these statements about parallelogram steering linkages are true EXCEPT: a. Tie rod sleeves have the same type of thread in both ends of the sleeve. b. Loose steering linkages may cause excessive tire tread wear. c. Loose steering linkage causes excessive steering wheel free play. d. The pitman arm helps maintain the proper center link and tie rod height.

a. Tie rod sleeves have the same type of thread in both ends of the sleeve

During steering full lock, the fluid at the steering gear is:

at high pressure with fluid flow blocked

All of these statements about a 4WS system are true EXCEPT: a. A 4WS system reduces yaw forces on the vehicle at higher speeds. b. A 4WS system provides a smaller turning circle. c. A 4WS system reduces tire wear. d. A 4WS system improves vehicle maneuverability at low speeds.

c. A 4WS system reduces tire wear.

The complaint is excessive steering wheel free play. All of the following could cause this problem EXCEPT: a. Loose worm shaft bearing preload. b. Worn steering gears. c. Steering gear column misalignment. d. Worn flex coupling or U joint.

c. Steering gear column misalignment

The universal joint allows the shaft to ________________ during a collision

fold under

During highway driving the fluid flow is _______________ while the pressure is _______________.

increased, decreased

The steering shaft is connected to the steering gear through a:

rag joint

A collapsible shaft is designed to:

reduce injury in an accident

A typical steering gear ratio in a manual steering gear is:

16:1

While discussing steering problems: Technician A says a "jerky" steering wheel and a "clunking" noise could indicate worn steering column U-joints. Technician B says lack of assist and a "growling" noise in a fluid-filled steering pump could indicate a hose or pump internal restriction. Who is correct?

A only

A vehicle has intermittent excessive steering effort. Technician A says inspect the fluid because it may have air in it. Technician B says inspect the belt because it may be slipping. Who is correct?

B only

While discussing power recirculating ball steering gear diagnosis: Technician A says excessive steering wheel free play may be caused by a worm shaft bearing preload adjustment that is tighter than normal. Technician B says excessive steering wheel free play may be caused by loose steering gear mounting bolts.

B only

While discussing power recirculating steering gear diagnosis: Technician A says the sector lash adjustment is performed with the worm shaft halfway between the centered position and the full-right position. Technician B says the worm shaft bearing preload adjustment is performed before the sector lash adjustment. Who is correct?

B only

Technician A says that serpentine belts made of EPDM resist cracking and instead exhibit wear to the belt ribs similar to tire wear and that a depth gauge should be used to assess belt wear. Technician B says that as a Neoprene serpentine belt ages and wears, cracks form on the belt ribs, and if there are more than three cracks in a 3 in. span the belt should be replaced. Who is correct?

Both A and B

While discussing steering linkages and dampers:

In a rack and pinion steering gear, the rack positions the tie rods parallel to the lower control arms.

Compared to a recirculating ball steering gear, a rack and pinion steering gear provides:

Increased road feel.

When comparing manual recirculating ball steering gears a higher numerical ratio provides:

Increased steering wheel movement in relation to front wheel movement.

A customer complains that sometimes the ignition switch will not unlock and the key will not turn. A preliminary inspection reveals that turning the steering wheel does not help but repositioning the key, after several attempts, unlocks the ignition. Technician A says the problem could be the column assembly is misaligned. Technician B says the problem could be the ignition key is worn.

Neither A nor B

A vehicle with a power recirculating ball steering system requires much higher than normal steering effort, especially in the parking lot. Technician A says the cause of the problem is a worn pitman shaft seal. Technician B says the cause of the problem is a worn worm shaft thrust bearing. Who is correct?

Neither A nor B

While discussing the steering pump pressure test: Technician A says the pressure gauge and valve should be connected in the power steering pump return hose to check pump pressure. Technician B says the pressure gauge valve should be closed for 30 seconds during the power steering pump pressure test. Who is correct?

Neither A nor B

If the clock spring electrical connector is not properly centered before it is installed:

The clock spring electrical connector may be broken.

In a manual recirculating ball steering gear:

The interference fit between the sector shaft teeth and ball nut teeth is present when the front wheels are straight ahead.

When adjusting on a power recirculating ball steering gear:

The pitman shaft backlash adjuster screw is turned fully counterclockwise and then one turn clockwise prior to the backlash adjustment.

The power steering pump belt breaks on a rack and pinion power steering system. Under this condition:

The steering operates like a manual steering system, and steering effort is higher.

When the worm shaft and bearings are properly installed and adjusted in a power recirculating ball steering gear:

The worm shaft bearings should be preloaded.

While being test driven a vehicle equipped with power rack and pinion steering has a clunking noise, which can also be felt in the steering wheel as it is driven straight ahead on rough pavement. What is the most likely cause?

Worn flexible steering coupler

A steering wheel on an air-bag-equipped vehicle moves from side to side in the column. Which of the following is the most likely cause? a. A loose rack mounting bushing. b. A worn upper steering shaft bearing. c. A worn pitman (sector) shaft. d. Loose steering gear box mounting bolts.

b. A worn upper steering shaft bearing

Some steering columns have sensors that monitor: a. the driver's steering intentions. b. All of the above c. the direction the steering wheel is turned. d. the speed the steering wheel is turned.

b. All of the above

All of the following are true about a Magnasteer power steering system EXCEPT: a. As vehicle speed changes or lateral acceleration occurs the amount of effort required to steer the vehicle can be varied depending on the requirements. b. At high speeds more assist is provided, which provides better road feel, firmer steering, and improved directional stability. c. If the system senses lateral acceleration the steering effort will become firmer in an effort to reduce oversteering by the driver. d. During low speed operation increased steering assist is provided for minimal steering effort to facilitate parking maneuvers and easy turning.

b. At high speeds more assist is provided, which provides better road feel, firmer steering, and improved directional stability.

The complaint is loss of power assist, but there is no mention of any associated noise. All of the following could cause this problem EXCEPT: a. Low fluid. b. Improperly inflated tires. c. Broken pump belt. d. Steering column misalignment.

b. Improperly inflated tires

In a column-driven electric power steering system all of the following are true EXCEPT: a. A motor module assembly is bolted to the lower end of the steering column. b. The steering shaft torque sensor is the most important input used by the power steering control module. c. At low speeds more steering assist is provided. d. The steering system may have a 20:1 steering ratio during low-speed cornering.

b. The steering shaft torque sensor is the most important input used by the power steering control module.

ll of these statements about a serpentine belt are true EXCEPT: a. A serpentine belt can be used to drive all the belt-driven components. b. The back of a serpentine belt can drive one component. c. A serpentine belt made of EPDM is susceptible to cracking. d. A serpentine belt can have an automatic belt tensioner.

c. A serpentine belt made of EPDM is susceptible to cracking

All of the following statements about hybrid electric vehicles that have an electrohydraulic power steering pump EXCEPT: a. The power steering pump has an electric driven motor. b. A control module determines the amount of power assist required. c. An electric motor drives the steering gear. d. Some are sullied 42V from the HEV inverter.

c. An electric motor drives the steering gear.

All of these statements about a power rack and pinion steering gear mounted behind the front wheel spindle are true EXCEPT: a. During a left turn fluid pressure is directed to the left side of the rack piston. b. During a right turn fluid pressure is directed to the right side of the rack piston. c. Fluid is returned through the vent tube positioned in the bellows boot. d. The spool valve is moved by torsion bar twisting during a turn.

c. Fluid is returned through the vent tube positioned in the bellows boot.

All of these statements about power steering pump pulley replacement are true EXCEPT: a. If the pulley is retained with a nut, a woodruff key prevents pulley rotation on the shaft. b. If the pulley is pressed onto the shaft, a special puller must be used to remove the pulley. c. If the pulley is pressed onto the shaft, a soft hammer may be used to drive the pulley onto the shaft when reinstalling the pulley. d. If the pulley is misaligned with the engine running, the power steering pump mountings may be worn.

c. If the pulley is pressed onto the shaft, a soft hammer may be used to drive the pulley onto the shaft when reinstalling the pulley

All of these statements about HEV service precautions are true EXCEPT: a. Open the high-voltage switch to isolate the high-voltage battery pack. b. High-voltage gloves must be worn when servicing HEV electrical systems. c. If the vehicle is not being driven, the high-voltage battery pack must be vented manually. d. Remove the electronic or conventional key from the instrument panel.

c. If the vehicle is not being driven, the high-voltage battery pack must be vented manually

All of these statements about integral-type power steering pump sealing are true EXCEPT: a. A large O-ring seal is positioned between the reservoir and the pump housing. b. A lip seal on the pump drive shaft prevents oil leaks around the shaft. c. Lip seals are mounted on bolt fittings on the back of the reservoir. d. The cap and dipstick provide a seal on the top of the reservoir neck.

c. Lip seals are mounted on bolt fittings on the back of the reservoir

All of these statements about rack and pinion steering linkages are true EXCEPT: a. The tie rods are parallel to the lower control arms. b. The tie rod position depends on the steering gear mounting. c. The tie rods are connected to the pinion in the steering gear. d. The outer tie rod ends connect the tie rods to the steering arms.

c. The tie rods are connected to the pinion in the steering gear

A preliminary steering inspection reveals that the steering wheel has nearly 1/2 inch of movement in either direction before the pitman arm begins to move. All of the following could cause this problem EXCEPT: a. Coupling joints. b. U-joints. c. Tight or seized shaft bearing. d. Worn or out-of-adjustment steering gear.

c. Tight or seized shaft bearing

All of these statements about steering gear ratios are true EXCEPT: a. When a steering gear with a 15:1 ratio is compared with a steering gear with a 13:1 ratio, the gear with the 15:1 ratio requires more steering wheel rotation to turn the front wheels. b. When a steering gear with a 15:1 ratio is compared with a steering gear with a 13:1 ratio, the gear with the 15:1 ratio provides reduced steering effort. c. When a steering gear with a 15:1 ratio is compared with a steering gear with a 13:1 ratio, the gear with the 15:1 ratio may be called a faster steering gear. d. The 13:1 steering gear ratio may be used on a smaller, lighter car and the 15:1 steering gear ratio may be used on a larger, heavier vehicle.

c. When a steering gear with a 15:1 ratio is compared with a steering gear with a 13:1 ratio, the gear with the 15:1 ratio may be called a faster steering gear.

A steering imbalance or low power assist in both directions may be caused by all of the following EXCEPT: a. Defective rack seals b. Defective rotary valve rings or seals c. Worn lower control arm bushings d. Restricted power steering lines or hoses

c. Worn lower control arm bushings

A car with a power recirculating ball steering gear has excessive steering kickback, and a preliminary inspection shows no abnormal wear in the linkage. Which of the following could be the cause of the problem? a. Worn gear piston or bore. b. Slipping pump belt. c. Worn pump poppet valve. d. Sticking valve spool.

c. Worn pump poppet valve.

In power recirculating ball steering gears: a. A variable ratio steering gear has sector shaft teeth with equal lengths. b. A variable ratio steering gear has a constant mechanical advantage regardless of steering wheel position. c. The torsion bar is connected between the steering shaft and the sector shaft. d. During a turn, power steering fluid is directed to the proper end of the ball nut piston by spool valve movement.

d. During a turn, power steering fluid is directed to the proper end of the ball nut piston by spool valve movement.

All of these statements about power steering pump design and operation are true EXCEPT: a. An increase in fluid movement through the outlet fitting venturi causes a pressure decrease in the venturi. b. An increase in the flow control valve opening allows more fluid to return to the pump inlet. c. The rotor is attached to the pump shaft and must rotate with this shaft. d. Fluid pressure from the pump vanes moves the flow control valve toward the closed position.

d. Fluid pressure from the pump vanes moves the flow control valve toward the closed position

All of these statements about recirculating ball steering gears are true EXCEPT: a. The steering gear provides a mechanical advantage. b. The steering gear reduces steering effort. c. Some early model steering gears had a worm and sector design. d. Ross cam and lever steering gears provided a very low internal friction.

d. Ross cam and lever steering gears provided a very low internal friction.

All of the following are true EXCEPT: a. A loose belt may cause the steering wheel to jerk. b. If V-belt edges are worn, the belt may be stretched or the wrong width. c. An oil-soaked drive belt may slip only in wet weather. d. When air is in the fluid, the fluid will never reach operating temperature.

d. When air is in the fluid, the fluid will never reach operating temperature.