Home ReviewsRefund
Home/Jeep/Grand Cherokee/Jeep Grand Cherokee WK2 (2010-2013)/Repair manual/Manual & Power Steering/Steering System
Contents Wiring diagrams Section: Manual & Power Steering All sections

Steering System Jeep Grand Cherokee WK2

Manual & Power Steering 56 illustrations ~9332 words

WITHOUT EHPS

CAUTIONThere is an Electro-Hydraulic Power Steering (EHPS) pump on some vehicles requiring a different fluid. Do not mix power steering fluid types. Damage may result to the power steering pump and system if any other fluid is used. The mechanical power steering pump systems on this vehicle require the use of Power Steering Fluid +4, which meets material specification MS-9602 or equivalent. The EHPS system uses fluid which meets material specification MS-11655 or equivalent. Do not overfill.

The belt driven power steering systems consist of

  1. Steering column and Intermediate Shaft
  2. Rack and pinion steering gear
  3. Hydraulic power steering pump
  4. Pump pressure and return hoses
  5. Remote power steering reservoir
  6. Oil Cooler

WITH EHPS

CAUTIONThere is an Electro-Hydraulic Power Steering (EHPS) pump on some vehicles requiring a different fluid. Do not mix power steering fluid types. Damage may result to the power steering pump and system if any other fluid is used. The mechanical power steering pump systems on this vehicle require the use of Power Steering Fluid +4, which meets material specification MS-9602 or equivalent. The EHPS system uses fluid which meets material specification MS-11655 or equivalent. Do not overfill.

Scheme 1

Scheme 1
Scheme 1

The EHPS system consists of

  1. Steering column and Intermediate Shaft
  2. Rack and pinion steering gear
  3. EHPS pump (3.6L) (3)
  4. Pump pressure (5) and supply/return line assembly (1, 2)
  5. Remote power steering reservoir (The EHPS reservoir has only one hose connection)
  6. Some early built vehicles with EHPS do not have a power steering system cooler effecting the power steering line/hose configuration.

Power assist is provided by the EHPS pump (3) mounted to the cradle in front of the engine. The EHPS pump is an electrically operated hydraulic pump which supplies variable hydraulic fluid flow and pressure to the steering gear. The EHPS pump replaces the conventional belted power steering pump. The EHPS pump has an EHPS module attached (not replaceable separately). There are two electrical connectors (6) on the EHPS pump assembly (3). One connector is a 12 volt low amperage module connector, and the other is a 12V higher amperage pump connector containing a larger gauge wire for motor operation. The power steering hoses and steering gear are substantially unchanged in function from a conventional system. However, there are unique components for this system, such as hoses for routing and the gear for valve tuning.

The steering column intermediate shaft attaches the steering column to the gear pinion. The rotation of the pinion moves the gear rack from side-to-side. This lateral action of the rack pushes and pulls the tie rods to change the direction of the front wheels.

Power assist is provided by an engine mounted hydraulic pump. The pump supplies hydraulic fluid to the steering gear. All vehicles are equipped with an oil cooler.

CAUTIONThere is an Electro-Hydraulic Power Steering (EHPS) pump on some vehicles requiring a different fluid. Do not mix power steering fluid types. Damage may result to the power steering pump and system if any other fluid is used. The mechanical power steering pump systems on this vehicle require the use of Power Steering Fluid +4, which meets material specification MS-9602 or equivalent. The EHPS system uses fluid which meets material specification MS-11655 or equivalent. Do not overfill.

Multiple modules work together to improve vehicle steering assist at different rates at different speeds. At slow speeds (parking maneuvers) more assist is available and at high speeds less assist is available. The EHPS module uses the CAN - C data bus for inputs and outputs of the information necessary for operation. The use of a scan tool is necessary for diagnostics. EHPS module faults are stored in a diagnostic program memory and are accessible with the scan tool. Faults remain in memory until cleared, or until after the vehicle is started approximately 50 times. Stored faults are not erased if the battery is disconnected. For descriptions and procedures related to DTCs. Refer to DIAGNOSIS AND TESTING .

The Electro-Hydraulic Power Steering (EHPS) Pump assembly contains a control module, brushless electric motor, and hydraulic pump integrated into a single unit. The EHPS Pump draws power from the 12 volt electrical system and provides the necessary flow and pressure to the steering gear to provide normal power steering. The output flow of the EHPS Pump is varied as a function of Steering Wheel Rate (received from SAS) and Vehicle Speed (received from ABS Module) in order to provide the optimum flow of power steering fluid to the steering gear under all operating conditions. The EHPS Pump will start to provide steering assist when the Vehicle speed message greater than 5 km/h (3 mph) is received on CAN C. If the Vehicle Speed message is missing at vehicle startup, the EHPS Pump will not operate. If the Vehicle Speed message is lost during operation the EHPS pump will use a default vehicle speed of 85 km/h (59 mph) to calculate desired flow and as a result, steering effort will no longer be speed sensitive. If the Steering Wheel Position message is lost the EHPS Pump will use a default steering wheel rate of 230°/sec to calculate desired flow and as a result, steering effort may be higher on evasive steering maneuvers. The EHPS pump will resume normal operation automatically once any missing message or out of range condition noted above is restored to normal.

Note. There are three diagnosis charts following that cover NOISE, VIBRATION AND HARSHNESS (NVH) ISSUES, PERFORMANCE ISSUES, and FLUID ISSUES.

NOISE, VIBRATION AND HARSHNESS (NVH) ISSUES

CONDITIONPOSSIBLE CAUSESEVALUATION/CORRECTION
OBJECTIONABLE HISS OR WHISTLE WHILE TURNING STEERING WHEEL WHEN STATIONARY OR MOVING SLOWLY*1. Damaged or mispositioned steering column shaft/coupling dash boot seal.1. Check to ensure boot is properly installed and seals against sheet metal. Reposition or replace steering column shaft/coupling dash boot seal as necessary.
2. Mis-routed power steering hose.2. Check routing of power steering hoses. Ensure hoses do not come in unwanted contact with other components and objects.
3. Restriction in pressure or return hose.3. Using an electronic listening tool, determine if noise is coming from either pressure or return hose. Replace hose that noise is present within.
4. Noisy valve in power steering gear.4. For evaluation and correction, refer to END, TIE ROD , DIAGNOSIS AND TESTING .
RATTLE OR EXCESSIVE CLUNK**1. Power steering gear loose on engine cradle/crossmember.1. Check fastener torque and tighten to specifications. Replace as necessary. Check steering wheel center following repair.
2. Loose strut assembly mounting fasteners at tower or knuckle.2. Check fastener torque and tighten to specifications.
3. Excessive play in outer tie rod.3. For evaluation and correction, refer to END, TIE ROD , DIAGNOSIS AND TESTING .
4. Engine cradle/crossmember mounting fasteners loose at frame or bushings worn.4. Check fastener torque and tighten to specifications. Inspect bushings and repair as necessary.
5. Wheel Mounting (Lug) nuts loose.5. Inspect wheel mounting (Lug) nuts and studs and repair as necessary. Tighten nuts to specifications.
6. Power steering hose touching the body or frame of vehicle.6. For evaluation and correction, refer to PUMP , DIAGNOSIS AND TESTING .
7. Stabilizer bar link joints worn (occurs with steering input only when moving, not stationary).7. At park, jounce only one side of vehicle front to exercise stabilizer bar. Replace stabilizer bar link.
8. Loose lower control arm mounting bolts at engine cradle, frame or crossmember (occurs with steering input only when moving, not stationary).8. Check control arm mounting bolts and tighten to specified torque.
9. Loose intermediate shaft or column.9. Rotate intermediate (steering) shaft in relationship to gear, checking for free-play. Check column fasteners and tighten to specifications as necessary.
10. Lower control arm pivot bushing worn (occurs with steering input only when moving, not stationary).10. Inspect bushings for wear and replace lower control arm as necessary.
11. Internal power steering gear noise.11. Drive vehicle on rough road, then steer rapidly back and forth when stopped. Replace power steering gear as necessary.
12. Loose inner tie rod.12. For evaluation and correction, refer to END, TIE ROD , DIAGNOSIS AND TESTING .
13. Damaged engine cradle/crossmember.13. Inspect the cradle/crossmember for cracks or other damage. Replace as necessary.
POPPING NOISE1. Loose steering gear mounting fasteners.1. Check fasteners for proper torque and retighten as necessary.
2. Loose outer tie rod mounting nut or jam nut.2. Check fastener torque. Replace nuts as necessary and tighten to specifications.
3. Loose intermediate (steering) shaft coupling at gear input shaft.3. Make sure coupling is fully seated on gear input shaft. Retighten or re-seat as necessary.
4. Worn tie rod (outer or inner).4. For evaluation and correction, refer to END, TIE ROD , DIAGNOSIS AND TESTING .
5. Worn axle half-shaft.5. For evaluation and correction, refer to NOISE/VIBRATION IN TURNS . .
CHIRP OR SQUEAL (POWER STEERING PUMP)1. Loose power steering pump drive belt.1. Inspect belt. Replace belt if worn or glazed. Tighten/adjust power steering pump drive belt if equipped with a manual tensioner.
2. Pulley alignment incorrect.2. Realign accessory drives.
3. Malfunctioning belt auto-tensioner3. Verify belt tension. Replace belt auto-tensioner.
4. Power steering pump noisy (worn bearing/bushing noise).4. Using an electronic listening tool, determine if noise is coming from pump. Replace power steering pump as required.
5. Generator or water pump noisy.5. Using an electronic listening tool, determine if noise is coming from Generator or water pump. Replace faulty component.
WHINE, GROWL, MOAN OR GROAN (POWER STEERING PUMP)***1. Low power steering fluid level.1. Fill power steering fluid reservoir to proper level and check for leaks (make sure all air is bled from the system fluid).
2. Air in power steering fluid.2. Inspect for excessive air bubbles in fluid (fluid will appear foamy and lighter in color). Inspect hoses for leaks and replace as necessary. Bleed air from fluid. Refer to STANDARD PROCEDURE .
3. Power steering hose touching body or frame of vehicle.3. For evaluation and correction, refer to PUMP , DIAGNOSIS AND TESTING .
4. Wear of power steering pump internal components.4. For evaluation and correction, refer to PUMP , DIAGNOSIS AND TESTING .
COLD START WHINE OR MOAN (POWER STEERING PUMP)***1. Low power steering fluid level.1. Fill power steering fluid reservoir to proper level and check for leaks (make sure all air is bled from the system fluid).
2. Extremely low ambient temperature (near 0 F° (-18 C°) or below)2. Some noise is expected as pump attempts to pull cold, thick fluid. Noise should go away as vehicle warms up. Acceptable levels of excessive noise are one second at 0 F° (-18 C°) and 15 seconds at -20 F° (-29 C°). If noise is excessive, look for poor sealing on the return hose or a possible fluid leak.
SQUEAKING OR RUBBING SOUND1. Steering column shroud or shaft rubbing.1. While turning the steering wheel, listen down column to locate. Check interference between moving components. Move or realign shrouds or shaft as necessary. Replace components if this does not correct problem.
2. Clockspring inside steering column noisy.2. Remove clockspring and reinstall steering wheel for testing. If noise is gone, replace clockspring.
3. Boot/dash seal lubrication inadequate.3. Remove boot seal and recheck for noise. Lubricate seal as necessary.
4. Steering gear outer tie rod noisy.4. While a helper turns the steering wheel, use an electronic listening tool to determine if noise is coming from either outer tie rod. Replace outer tie rods as necessary.
5. Steering gear internally noisy.5. Remove dash seal boot, then exercise the steering wheel. If noise is still present at gear, replace steering gear.
SCRUBBING OR KNOCKING SOUND.1. Incorrect tire or wheel size.1. Replace incorrect size tire or wheel with original equipment size.
2. Worn motor or transmission mount.2. Drive vehicle, moving accelerator pedal rapidly up and down attempting to locate noise. Try in both forward and reverse. Replace mounts as necessary.
3. Tires contacting wheel well.3. Make sure wheel house is properly positioned. If not, reposition as necessary. If steering wheel is properly centered, check steering gear travel left to right by rotating the steering wheel to each stop. Steering wheel should rotate the same amount in both directions from center. If not, replace steering gear.
4. Interference between moving steering components and other components.4. Check for bent or misaligned components. Correct or replace as necessary.
5. Accessory drive pulley rubbing against another component.5. Check pulleys for wear. Check for worn engine or transmission mount. Reposition components or replace mounts as necessary.

Note. * There is some noise in all power steering systems. One of the most common is a hissing sound evident when turning the steering wheel when at a standstill or when parking and the steering wheel is at the end of its travel. Hiss is a very high frequency noise similar to that experienced while slowly closing a water tap. The noise is present in every valve and results when high velocity fluid passes valve orifice edges. There is no relationship between this noise and the performance of the steering system.

Note. ** A light clunk may be felt or heard during steering wheel reversal while vehicle is stationary. This results from internal steering gear rack movement at the bushings and in no way affects the performance of the steering system. This movement may be felt in the steering components during steering wheel reversal.

Note. *** Power steering pump growl/moan/groan results from the development of high pressure fluid flow. Normally this noise level should not be high enough to be objectionable.

PERFORMANCE ISSUES

CONDITIONPOSSIBLE CAUSESEVALUATION/CORRECTION
STEERING WHEEL OR COLUMN HAS FREEPLAY/LASH/LOOSENESS (CLUNKING OR RATTLING)1. Loose coupling pinch bolt at gear input shaft.1. Check pinch bolt torque. Replace pinch bolt if equipped with thread locker patch and tighten to specifications.
2. Power steering gear loose on cradle/crossmember.2. Inspect gear mounting bolts. Replace if necessary and tighten to specifications.
3. Excessive freeplay or noise from steering column bearings.3. Replace steering column.
4. Excessive intermediate (steering) shaft coupling u-joint free-play.4. Rotate steering wheel back-and-forth while watching coupling. Observe for free-play. Replace intermediate shaft as necessary.
5. Loose or worn outer tie rod.5. For evaluation and correction, refer to END, TIE ROD , DIAGNOSIS AND TESTING .
6. Lack of lubrication in lower ball joint or ball joint is damaged.6. For evaluation, refer to BALL JOINT, SUSPENSION, LOWER , DIAGNOSIS AND TESTING . Lubricate ball joint if equipped with a zerk fitting and check for function. If not equipped with a zerk fitting, test and replace ball joint as necessary.
7. Excessive lash inside steering gear.7. Disconnect intermediate shaft and turn steering gear input shaft. Observe for any movement without a corresponding tire movement. Replace steering gear as necessary.
STEERING WHEEL HAS FORE AND AFT LOOSENESS.1. Steering wheel retaining bolt loose.1. Check steering wheel retaining bolt torque and tighten to specifications as necessary.
2. Loose steering column to instrument panel fasteners.2. Check steering column to instrument panel fastener torque and tighten to specifications as necessary.
3. Steering column lower bearing spring retainer slipped on steering column shaft.3. Pull steering wheel fore-and-aft while observing movement. Replace steering column as necessary.
STEERING WHEEL, DASH OR VEHICLE VIBRATES DURING STEERING MANEUVERS (ESPECIALLY AT LOW SPEED OR STANDSTILL).1. Air in power steering fluid.1. Inspect for excessive air bubbles in fluid (fluid will appear foamy and lighter in color). Inspect hoses for leaks and replace as necessary. Bleed air from fluid. Refer to STANDARD PROCEDURE .
2. Tire(s) not properly inflated.2. Check and inflate tires to the specified pressure.
3. Excessive engine vibration.3. Ensure that the engine is tuned properly.
4. Loose tie rod end jam nut.4. Check torque and tighten the inner to outer tie rod jam nut to specifications.
5. Overcharged air conditioning (A/C) system.5. Turn A/C off and verify issue goes away. Repair A/C as necessary.
6. Grounded, damaged or loose engine mount.6. Visually inspect for damaged or misaligned mounts. Check fastener torque. Replace, realign or retighten as necessary.
7. Loose or worn outer tie rod.7. For evaluation and correction, refer to END, TIE ROD , DIAGNOSIS AND TESTING .
8. Steering gear noisy.8. During a parking event at 0 mph, verify there is vibration only with steering. Steer in both directions and verify that the noise follows the steering input. Check TSB's for any known issues. Replace steering gear as necessary.
STEERING CATCHES, SURGES OR STICKS IN CERTAIN POSITIONS OR IS DIFFICULT TO TURN.1. Low power steering fluid level.1. Check fluid level and fill to proper level as necessary. Check for leaks. Make sure all air is bled from system.
2. Tire(s) not properly inflated.2. Check and inflate tires to the specified pressure.
3. Loose or slipping power steering/accessory drive belt.3. Verify belt tension. Replace belt auto-tensioner and belt as necessary.
4. Lack of lubrication in lower ball joint or ball joint is damaged.4. For evaluation, refer to BALL JOINT, SUSPENSION, LOWER , DIAGNOSIS AND TESTING . Lubricate ball joint if equipped with a zerk fitting and check for function. If not equipped with a zerk fitting, test and replace ball joint as necessary.
5. Lack of lubrication in steering gear outer tie rod end(s).5. For evaluation and correction, refer to END, TIE ROD , DIAGNOSIS AND TESTING .
6. Faulty power steering pump.6. Perform Power Steering Flow and Pressure Test. Refer to DIAGNOSIS AND TESTING . Look for low or erratic flow or pressure. Replace power steering pump as necessary.
7. Excessive friction in intermediate shaft/coupler joint.7. Disconnect intermediate shaft/coupler at steering gear and check joint for smooth operation in all directions. Replace intermediate shaft/coupler joint.
8. Excessive friction in steering column.8. Disconnect intermediate shaft/coupler at steering gear. Turn steering wheel two revolutions in either direction from on center and check for smooth operation. DO NOT turn past two revolutions. Damage to the clockspring may occur. Replace steering column as necessary.
9. Worn or binding seat and bearing in front strut assembly.9. Disconnect outer tie rod ends from knuckles, then turn tire and wheel assembly checking for smooth operation. Replace front strut assembly seat and bearing.
10. Faulty steering gear.10. With vehicle on hoist, tires unsupported and engine off, steer gear throughout travel and check for smooth operation. Replace steering gear (only after all previous components have been checked).
STEERING WHEEL DOES NOT RETURN TO CENTER POSITION.1. Tire(s) not properly inflated.1. Check and inflate tires to the specified pressure.
2. Improper front wheel alignment.2. Check and adjust wheel alignment as necessary.
3. Lack of lubrication in lower ball joint or ball joint is damaged.3. For evaluation, refer to BALL JOINT, SUSPENSION, LOWER , DIAGNOSIS AND TESTING . Lubricate ball joint if equipped with a zerk fitting and check for function. If not equipped with a zerk fitting, test and replace ball joint as necessary.
4. Excessive friction in intermediate shaft/coupler joint.4. Disconnect intermediate shaft/coupler at steering gear and check joint for smooth operation in all directions. Replace intermediate shaft/coupler joint.
5. Excessive friction in steering column.5. Disconnect intermediate shaft/coupler at steering gear. Turn steering wheel two revolutions in either direction from on center and check for smooth operation. DO NOT turn past two revolutions. Damage to the clockspring may occur. Replace steering column as necessary.
6. Worn or binding seat and bearing in front strut assembly.6. Disconnect steering gear outer tie rod ends at knuckles, then turn tire and wheel assembly in and out checking for smooth operation. Replace seat and bearing as necessary.
7. Excessive friction in power steering gear.7. With vehicle on hoist, tires unsupported and engine off, steer gear throughout travel and check for smooth operation. Replace steering gear (only after all previous components have been checked).
EXCESSIVE STEERING WHEEL KICKBACK FROM ROAD INPUTS1. Air in power steering fluid.1. Inspect for excessive air bubbles in fluid (fluid will appear foamy and lighter in color). Inspect hoses for leaks and replace as necessary. Bleed air from fluid. Refer to STANDARD PROCEDURE .
2. Power steering gear loose on cradle/crossmember.2. Inspect gear mounting bolts. Replace if necessary and tighten to specifications.
3. Steering column, coupling or intermediate shaft worn or loose.3. Rotate steering wheel back-and-forth while inspecting intermediate shaft going into steering gear. Look for excessive free-play. Retighten if loose bolt is found. Replace steering column, coupling or intermediate shaft if necessary.
4. Power steering pump flow is too low.4. Perform Power Steering Flow and Pressure Test. Refer to DIAGNOSIS AND TESTING . Look for low or erratic flow or pressure. Replace power steering pump as necessary.

FLUID ISSUES

CONDITIONPOSSIBLE CAUSESEVALUATION/CORRECTION
LOW FLUID LEVEL WITH VISIBLE LEAK.1. Loose power steering hose fittings or connections.1. Check torque on all tube nuts (at gear and pump). Inspect clamps at all rubber hose connections for correct position, damage and tension. Tighten tube nuts as required. Reposition or replace clamps at hose connections. Clean joints and reinspect for leaks.
2. Damaged or missing O-ring at power steering hose tube nuts.2. Remove tube nut and inspect O-ring. If damaged or missing, replace O-ring. Clean joints and reinspect for leaks.
3. Power steering line or hose failure.3. Clean fluid from around suspect areas. Run vehicle and inspect for leaks. Look inside reservoir to see if air is being ingested. Replace hoses as necessary.
4. Power steering component leaking (reservoir, pump, gear).4. Clean fluid from around suspect areas. Run vehicle and inspect for leaks. Look inside reservoir to see if air is being ingested. Replace power steering component as necessary.
AERATED FLUID.*1. Low power steering fluid level.1. Check fluid level and fill to proper level as necessary. Check for leaks. Make sure all air is bled from system.
2. Air leak at power steering supply hose, reservoir or pump.2. Inspect components. Put a hand vacuum pump on the reservoir and verify that the system can keep a vacuum. System should not lose more than 1 psi in 2 minutes (make sure vacuum pump is sealed well to the reservoir).
3. Air leak at power steering supply hose, reservoir or pump.3. Inspect components. Place a hand vacuum pump with Adapter 9688 on reservoir and verify that system can sustain vacuum. System should not lose more than 1 psi in 2 minutes (make sure vacuum pump is sealed well to the reservoir). Replace steering component as necessary.
RESERVOIR FLUID OVERFLOW OR FLUID THAT IS MILKY IN COLOR1. Water contamination of power steering fluid.1. Inspect fluid for milky appearance. Completely drain power steering fluid. Refill and bleed system. Refer to STANDARD PROCEDURE .

Note. Extremely cold temperatures may cause power steering fluid aeration. The air should work its way out of the system as the fluid warms.

Scheme 2

Scheme 2: HYDRAULIC FLOW AND PRESSURE - WITHOUT EHPS
Scheme 2: HYDRAULIC FLOW AND PRESSURE - WITHOUT EHPS
1 - TUBE
2 - ADAPTER FITTINGS
3 - ANALYZER
4 - GAUGE HOSE

The following procedure is used to test the operation of the power steering system on the vehicle. This test will provide the gallons per minute (GPM) or flow rate of the power steering pump along with the maximum relief pressure. Perform test any time a power steering system problem is present. This test will determine if the power steering pump or power steering gear is not functioning properly. The following pressure and flow test is performed using Power Steering Analyzer Tool kit (special tool #6815, Kit, Power Steering) (3) Adapter Kit (special tool #6893A, Kit, Power Steering) and (special tool #6825A, Adapter, Power Steering).

FLOW AND PRESSURE TEST

  1. Check the power steering belt to ensure it is in good condition and adjusted properly.
  2. Connect pressure gauge hose from the Power Steering Analyzer to Tube (special tool #6825A, Adapter, Power Steering).
  3. Connect Adapter (special tool #6826, Adapter, LH P/S Tester) to Power Steering Analyzer test valve end.
  4. Disconnect the high pressure hose from the power steering pump.
  5. Connect the tube to the pump hose fitting.
  6. Connect the power steering hose from the steering gear to the adapter.
  7. Open the test valve completely.
  8. Start engine and let idle long enough to circulate power steering fluid through flow/pressure test gauge and to get air out of the fluid. Then shut off engine.
  9. Check fluid level, add fluid as necessary. Start engine again and let idle.
  10. Gauge should read below 862 kPa (125 psi), if above, inspect the hoses for restrictions and repair as necessary. The initial pressure reading should be in the range of 517-689 kPa (75-100 psi). CAUTION: The following test procedure involves testing maximum pump pressure output and flow control valve operation. Do not leave the valve closed for more than three seconds as the pump could be damaged.
  11. Increase the engine speed to 1500 RPM and read the flow meter. If the flow rate (GPM) is below specification, (refer to pump specification chart for GPM) the pump should be replaced.
  12. Close valve fully three times and record highest pressure indicated each time. All three readings must be above specifications and within 345 kPa (50 psi) of each other. Pressures above specifications but not within 345 kPa (50 psi) of each other, replace pump. Pressures within 345 kPa (50 psi) of each other but below specifications, replace pump. CAUTION: Do not force the pump to operate against the stops for more than 2 to 3 seconds at a time because, pump damage will result.
  13. Open the test valve and turn the steering wheel to the extreme left and right positions three times against the stops. Record the highest pressure reading at each position. Compare readings to the pump specifications chart. If pressures readings are not within 50 psi of each other, the gear is leaking internally and must be replaced.
SYSTEMRELIEF PRESSURE ± 50FLOW RATE (GPM) AT 1500 RPM
WITHOUT EHPS11721 kPa (1700 psi)2.5 - 3.0 GPM

PUMP SPECIFICATION

POWER STEERING FLOW AND PRESSURE - ELECTRO-HYDRAULIC POWER STEERING (EHPS)

The following procedure is used to test the operation of the power steering system on the vehicle (equipped with EHPS). This test provides the Gallons Per Minute (GPM) or the flow rate of the power steering pump along with the maximum relief pressure. Perform this test any time a power steering system problem is present. This test determines if the power steering pump or power steering gear is not functioning properly. The following pressure and flow test is performed using Power Steering Kit (special tool #6815, Kit, Power Steering), Hose (special tool #6905, Hose Assembly) from Power Steering Analyzer Adapter Kit (special tool #6893A, Kit, Power Steering), Hose (special tool #6959, Hose Assembly), and Power Steering Analyzer Adapter (special tool #10250, Adapters, Power Steering)

  1. Raise and support the vehicle. Refer to «JACKING AND HOISTING LIFT POINTS»(/jeep/grand-cherokee/wk2-2010-2013/remont/fuses-circuit-breakers/#vehicle-quick-reference) .
  2. Remove the front skid plate. Refer to «PLATE, SKID, FRONT , REMOVAL»(/jeep/grand-cherokee/wk2-2010-2013/remont/frames-subframes-crossmembers/#frame-and-bumpers) .
  3. Assemble Power Steering Analyzer as follows: Gauge end (inlet) of Flow Meter And Gauge (special tool #6800, Analyzer, Power Steering) - Hose (special tool #6905, Hose Assembly) (3), Adapter (special tool #10250-1, Adapters, Power Steering) (2). Valve end (outlet) of Flow Meter And Gauge (special tool #6800, Analyzer, Power Steering) - Hose (special tool #6959, Hose Assembly) (6), Adapter (special tool #10250-2, Adapters, Power Steering) (5).
  4. Remove power steering pressure line retaining bolt from power steering pump. Separate pressure line fitting from power steering pump.
  5. Connect Adapter (special tool #10250-1, Adapters, Power Steering) (2) to pressure fitting on power steering pump. Tighten retaining bolt to 10 N.m (89 in. lbs.).
  6. Connect power steering pressure hose to Adapter Fitting (special tool #10250-2, Adapters, Power Steering) (5). Tighten retaining bolt to 10 N.m (89 in. lbs.).
  7. Open the test valve completely.
  8. Start the engine and idle long enough to circulate power steering fluid through the flow/pressure test gauge and to get air out of the fluid. Then shut off engine.
  9. Check the fluid level, add fluid as necessary. Start the vehicle and allow it to idle.
  10. The gauge should read below 862 kPa (125 psi), if above, inspect the hoses for restrictions and repair as necessary. NOTE: Always test for and repair Diagnostic Trouble Codes (DTCs) prior to replacement of the Electro-Hydraulic Power Steering (EHPS) pump. The EHPS pump will not vary output if there are communication DTCs.
  11. Record the flow meter reading (GPM) at idle with no steering wheel movement, and again while turning the wheel as fast as possible. The readings should be within specifications. If the readings are below specifications, replace the power steering pump. CAUTION: The following test procedure involves testing maximum pump pressure output and flow control valve operation. Do not leave the valve closed for more than three seconds as the pump could be damaged.
  12. Close the valve fully three times and record the highest pressure indicated each time. All three readings must be above specifications and within 345 kPa (50 psi) of each other. If the pressures are above specifications but not within 345 kPa (50 psi) of each other, replace the pump. If the pressures are within 345 kPa (50 psi) of each other but below specifications, replace pump. CAUTION: Do not force the pump to operate against the stops for more than 2 to 3 seconds at a time because, pump damage will result.
  13. Open the test valve and turn the steering wheel to the extreme left and right positions three times against the stops. Record the highest pressure reading at each position. Compare the readings and if the pressure readings are not within 345 kPa (50 psi) of each other, the gear is leaking internally and must be replaced. The initial reading will be near relief pressure, then drop approximately 689 kPa (100 PSI).
SYSTEMRELIEF PRESSURE ± 75FLOW RATE (GPM)
EHPS11, 721 kPa (1700 psi) with test valve closed.1.0 - 2.1 GPM at idle with no steering wheel rotation.
EHPS11, 721 kPa (1700 psi) turning steering wheel to wheel stops.Momentarily raise to between 1.5 - 2.5 GPM at idle with rapid steering wheel rotation.

PUMP SPECIFICATION

WARNINGFluid level should be checked with the engine OFF to prevent personal injury from moving parts and to assure an accurate fluid level reading.
CAUTIONThere is an Electro-Hydraulic Power Steering (EHPS) pump on some vehicles requiring a different fluid. Do not mix power steering fluid types. Damage may result to the power steering pump and system if any other fluid is used. The mechanical power steering pump systems on this vehicle require the use of Power Steering Fluid +4, which meets material specification MS-9602 or equivalent. The EHPS system uses fluid which meets material specification MS-11655 or equivalent. Do not overfill.
CAUTIONIf the air is not purged from the power steering system correctly, pump failure could result.

Note. Be sure the vacuum tool used in the following procedure is clean and free of any fluids.

Scheme 3

Scheme 3
Scheme 3
  1. Check the fluid level. When the fluid is at normal ambient temperature, approximately 21° - 27° C (70° - 80° F), the fluid level should read between the MAX and MIN markings. When the fluid is hot, fluid level is allowed to read up to the MAX line. CAUTION: Do not fill fluid beyond the MAX mark. Check cap seal for damage and replace if needed.
  2. Remove the cap from the fluid reservoir and fill the power steering fluid reservoir up to the MAX marking with the correct power steering fluid as follows: With a mechanical power steering pump - Mopar® Power Steering Fluid +4 or equivalent, which meets Chrysler Material Standard MS-9602. With an Electro-Hydraulic Power Steering (EHPS) - Mopar® Hydraulic Power Steering Fluid or equivalent, which meets Chrysler Material Standard MS-11655.
  3. Tightly insert from the following list, the proper P/S Cap Adaptor (4) into the mouth of the reservoir (3): With a mechanical pump - (special tool #9688A, Cap Adapter, Power Steering Pump) With an EHPS pump - (special tool #10347, Cap Adapter, Power Steering Pump) CAUTION: Failure to use a vacuum pump reservoir (1) may allow power steering fluid to be sucked into the hand vacuum pump.
  4. Attach Hand Vacuum Pump (special tool #C-4207-A, Vacuum Pump, Hand) (2) or equivalent, with reservoir (1) attached, to the Power Steering Cap Adaptor (4). CAUTION: Do not run the vehicle while vacuum is applied to the power steering system. Damage to the power steering pump can occur. NOTE: When performing the following step make sure the vacuum level is maintained during the entire time period.
  5. Using Hand Vacuum Pump (2), apply 68-85 kPa (20-25 in. Hg) of vacuum to the system for a minimum of three minutes.
  6. Slowly release the vacuum and remove the special tools.
  7. Adjust the fluid level as necessary. Refer to 1 .
  8. Repeat through. Refer to 1 . until the fluid no longer drops when vacuum is applied. Refer to 7 .
  9. Start the engine and cycle the steering wheel lock-to-lock three times. NOTE: Do not hold the steering wheel at the stops.
  10. Stop the engine and check for leaks at all connections.
  11. Check for any signs of air in the reservoir and check the fluid level. If air is present, repeat the procedure as necessary.

SPECIFICATIONS

DESCRIPTIONN.mFt. Lbs.In. Lbs.
Power Steering Pump Bolts (3.6L)2821275
Power Steering Pump Bolts (5.7L)2317204
Power Steering Pump Bracket to Pump Bolts (3.6L)2317204
Power Steering Pump Bracket to Cylinder Head Bolts (5.7L)2821275
Power Steering Lines 3/8 Tube Nuts2821275
Power Steering Line Mounting Brackets to Front Cradle871
Power Steering Reservoir Bracket Bolts2015132
Rack and Pinion Steering Gear to Frame Bolts/Nuts257190
Rack and Pinion Steering Gear Intermediate Shaft Bolt4533
Steering Column Bearing Housing Bolts980
Steering Column Steering Wheel Bolt8059
Steering Column Mounting Nuts2720
Steering Column Shaft Coupler Bolts4533
Tie Rod End Knuckle Nut9570
Tie Rod End Jam Nut9369
Tie Rod End, Inner (to Gear)8865
EHPS Pump Bracket to Cradle Bolts (Diesel)5440
EHPS Pump Bracket to Pump Bolts (Diesel)2317204
Power Steering Pressure Line to EHPS Pump Bolt (Diesel)2015177
Wiring Harness Bracket to EHPS Pump (Diesel)871

TORQUE

SPECIAL TOOLS

10087-2A - Adapter Wrench, Inner Tie Rod 10087-6 - Socket, Inner Tie Rod (Originally Shipped In Kit Number(s) 10203, 10204.) 10250 - Adapters, Power Steering 10250-1 - Adapters, Power Steering (Originally Shipped In Kit Number(s) 10250.) 10250-2 - Adapters, Power Steering (Originally Shipped In Kit Number(s) 10250.) 10347 - Cap Adapter, Power Steering Pump 6800 - Analyzer, Power Steering 6815 - Kit, Power Steering (Originally Shipped In Kit Number(s) 6784, 6809, 6898.) 6825A - Adapter, Power Steering (Originally Shipped In Kit Number(s) 6893A, 6894, 6895, 6897, 6898, 8887, 8887CC.) 6826 - Adapter, LH P/S Tester (Originally Shipped In Kit Number(s) 6893A, 6894, 6895, 6897, 6898.) 6893A - Kit, Power Steering (Originally Shipped In Kit Number(s) 6896.) 6905 - Hose Assembly (Originally Shipped In Kit Number(s) 6896.) 6959 - Hose Assembly (Originally Shipped In Kit Number(s) 6945, 6946, 6947, 6948, 6949.) 9688A - Cap Adapter, Power Steering Pump (Originally Shipped In Kit Number(s) 10075A-DOD, 10075-CHRYSLER, 10075-DODGE.) C-3894-A - Puller, Tie Rod (Originally Shipped In Kit Number(s) 9202, 9202A-CAN, 9202CC, 9299, 9299CC, 9299CC, 9300A-CAN.) C-4207-A - Vacuum Pump, Hand

Scheme 4

Scheme 4: SPECIAL TOOLS
Scheme 4: SPECIAL TOOLS

Scheme 5

Scheme 5
Scheme 5

Scheme 6

Scheme 6
Scheme 6

Scheme 7

Scheme 7
Scheme 7

Scheme 8

Scheme 8
Scheme 8

Scheme 9

Scheme 9
Scheme 9

Scheme 10

Scheme 10
Scheme 10

Scheme 11

Scheme 11
Scheme 11

Scheme 12

Scheme 12
Scheme 12

Scheme 13

Scheme 13
Scheme 13

WARNINGS AND CAUTIONS

The steering column on vehicles with an automatic transmission may not be equipped with an internal locking shaft that allows the ignition key cylinder to be locked with the key. Alternative methods of locking the steering wheel for service will have to be used.

Failure to center and lock the steering wheel for service can result in Steering Column Module damage.

The tilt column has been designed to be serviced as an assembly, less the wiring, switches, steering wheel, airbag, etc. Most steering column components can be serviced without removing the steering column from the vehicle.

The airbag system is a sensitive, complex electro-mechanical unit. Before attempting to diagnose, remove or install the airbag system components you must first disconnect and isolate the battery negative (ground) cable. Then wait two minutes for the system capacitor to discharge. Failure to do so could result in accidental deployment of the airbag and possible personal injury. The fasteners, screws, and bolts, originally used for the airbag components, have special coatings and are specifically designed for the airbag system. They must never be replaced with any substitutes. Anytime a new fastener is needed, replace with the correct fasteners provided in the service package or fasteners listed in the parts books.

Safety goggles should be worn at all times when working on steering columns.

DESCRIPTION

WARNINGThe airbag system is a sensitive, complex electro-mechanical unit. Before attempting to diagnose, remove or install the airbag system components you must first disconnect and isolate the battery negative (ground) cable. Then wait two minutes for the system capacitor to discharge. Failure to do so could result in accidental deployment of the airbag and possible personal injury. The fasteners, screws, and bolts, originally used for the airbag components, have special coatings and are specifically designed for the airbag system. They must never be replaced with any substitutes. Anytime a new fastener is needed, replace with the correct fasteners provided in the service package or fasteners listed in the parts books.
CAUTIONDo not hammer on steering column shaft. This may cause damage to the column internally.

Note. When servicing the steering wheel after removing the old bolt, a NEW bolt must be used when installing.

Note. When servicing the steering coupler a NEW bolt must be used when installing.

Scheme 14

Scheme 14
Scheme 14

There are two types of columns available: electronic tilt/telescope (2) and manual tilt/telescope (not shown in illustration). Each type of column has been designed to be serviced as an assembly less wiring, switches, steering wheel, etc.

The tilt motor (3) can be replaced separately from the column, but the telescoping motor (1) is serviced with the column. The upper intermediate shaft (4) can also be serviced separately from the column.

The electronic tilt and telescope column is operated by a switch on the column located below the multi-function switch. The movement of the column is controlled by the memory seat module. Refer to MODULE, MEMORY, SEAT , OPERATION .

When servicing any component of the steering column, refer to WARNING . Observe all WARNINGS and CAUTIONS.

DIAGNOSIS AND TESTING - STEERING COLUMN

If the vehicle is involved in a front end collision or the air bag has deployed or both, the steering column must be replaced.

REMOVAL

WARNINGBefore servicing the steering column the airbag system must be disarmed. Failure to do so may result in accidental deployment of the airbag and possible personal injury. Refer to AIR BAG, DRIVER , REMOVAL .
CAUTIONSteering column module is centered to the vehicles steering system. Failure to keep the system and steering column module centered and locked/inhibited from rotating can result in steering column module damage. Refer to CLOCKSPRING , STANDARD PROCEDURE .

Scheme 15

Scheme 15
Scheme 15

Scheme 16

Scheme 16
Scheme 16

Scheme 17

Scheme 17
Scheme 17

Scheme 18

Scheme 18
Scheme 18

Scheme 19

Scheme 19
Scheme 19
  1. Position front wheels straight ahead.
  2. Disconnect and isolate the negative (ground) cable from the battery.
  3. Remove the airbag. Refer to «AIR BAG, DRIVER , REMOVAL»(/jeep/grand-cherokee/wk2-2010-2013/remont/airbag/#restraints-service-information) .
  4. Disconnect steering wheel electrical connectors and remove the steering wheel bolt (1).
  5. Slide the steering wheel (2) off the steering column assembly.
  6. Inhibit rotation of the steering column with adhesive tape/or strap.
  7. Remove the steering column module. Refer to «MODULE, STEERING COLUMN , REMOVAL»(/jeep/grand-cherokee/wk2-2010-2013/remont/communication-devices/#electronic-control-modules-service-information) .
  8. Remove the opening cover (2) and reinforcement. Refer to «REMOVAL»(/jeep/grand-cherokee/wk2-2010-2013/remont/gauges-instrument-panels/#body-interior-exterior) .
  9. Remove the knee blocker (if equipped). Refer to «AIR BAG, KNEE BLOCKER , REMOVAL»(/jeep/grand-cherokee/wk2-2010-2013/remont/airbag/#restraints-service-information) .
  10. Remove the pinch bolt (3) at the upper intermediate shaft coupling. Separate shaft from coupler.
  11. Remove front two column mounting bolts (1)
  12. Support the column and remove the two remaining mounting bolts (1).
  13. Disconnect electrical connectors for power tilt and telescope motors, if equipped.
  14. Remove column from the vehicle.

INSTALLATION

WARNINGBefore servicing the steering column the airbag system must be disarmed. Failure to do so may result in accidental deployment of the airbag and possible personal injury. Refer to AIR BAG, DRIVER , INSTALLATION .
CAUTIONSteering column module is centered to the vehicles steering system. Failure to keep the system and steering column module centered and locked/inhibited from rotating can result in steering column module damage. Refer to CLOCKSPRING , STANDARD PROCEDURE .

Note. Make sure the front wheels are still in the straight ahead position.

Scheme 20

Scheme 20
Scheme 20
  1. Install the column (2) into the vehicle and lift the column up into place. Loosely install the mounting bolts (1), do not tighten at this time.
  2. Install the two remaining mounting bolts (1) and tighten all four mounting bolts to 27 N.m (20 ft.lbs.).
  3. Connect electrical connectors to tilt and telescope motors, if equipped.
  4. Slide the coupler from the lower intermediate shaft (2) onto the upper intermediate shaft (1) and install a new coupler bolt (3). Tighten the coupler bolt to 45 N.m (33 ft. lbs.).
  5. Install the reinforcement and opening cover (2). Refer to «INSTALLATION»(/jeep/grand-cherokee/wk2-2010-2013/remont/gauges-instrument-panels/#body-interior-exterior) .
  6. Install the hush panel (2) and knee blocker, if equipped. Refer to «AIR BAG, KNEE BLOCKER , INSTALLATION»(/jeep/grand-cherokee/wk2-2010-2013/remont/airbag/#restraints-service-information) .
  7. Install the steering column module. Refer to «MODULE, STEERING COLUMN , INSTALLATION»(/jeep/grand-cherokee/wk2-2010-2013/remont/communication-devices/#electronic-control-modules-service-information) .
  8. Install the steering wheel (2) onto the steering column.
  9. Install a new steering wheel mounting bolt (1) and tighten to 80 N.m (59 ft. lbs.).
  10. Connect all electrical connectors.
  11. Install the drivers airbag. Refer to «AIR BAG, DRIVER , INSTALLATION»(/jeep/grand-cherokee/wk2-2010-2013/remont/airbag/#restraints-service-information) .
  12. Connect the negative (ground) cable to the battery.

Scheme 21

Scheme 21: DESCRIPTION
Scheme 21: DESCRIPTION

Note. Specific instructions must be followed when putting the steering column bearing (1) together with the steering column bearing housing (2).

The steering column bearing (1) is contained within the steering column bearing housing (2) which is bolted to the cowl as a seal and steering shaft stabilizer to reduce steering wheel vibration. If the bearing (1) needs serviced the steering column bearing housing (2) must also be replaced. Refer to HOUSING, STEERING COLUMN BEARING , REMOVAL .

The steering column bearing housing (2) is bolted to the cowl as a seal and steering shaft stabilizer to reduce steering wheel vibration. The steering column shaft bearing (1) is contained within the steering column bearing housing (2). If the housing (2) needs serviced the steering column bearing (1) must also be replaced.

Note. Specific instructions must be followed when putting the steering column bearing (1) together with the steering column bearing housing (2).

Scheme 22

Scheme 22
Scheme 22

Scheme 23

Scheme 23
Scheme 23

Scheme 24

Scheme 24
Scheme 24
  1. Inhibit rotation of the steering column with adhesive tape/or strap.
  2. From the engine compartment, remove the lower intermediate shaft to upper intermediate shaft pinch bolt (3).
  3. Separate the lower intermediate shaft coupler (2) from the shaft (1).
  4. If equipped, remove the push in retainers (1) and remove the lower panel (2) below the steering column.
  5. Remove the pinch bolt (1) from the upper intermediate shaft coupler (2) at the column.
  6. Separate the shaft from the column.
  7. Tilt the coupler and shaft down just enough to carefully pull the shaft from the steering column shaft bearing and housing at the cowl.
  8. Pull back the insulation from the steering column bearing housing (1) as necessary for access and remove the three bolts (2).
  9. Using a common hook tool, remove the housing (1) from the cowl panel.
CAUTIONWhen the steering column bearing (1) is installed into the steering column bearing housing (2), the arrow (4) will be lined up with the notched line (3) on the housing. Turning the bearing past the intended marks may cause damage.

Scheme 25

Scheme 25
Scheme 25
  1. Place the new steering column bearing (1) into the steering column bearing housing (2) and carefully turn clockwise until a click is heard AND the arrow (4) on the bearing and the tab (3) on the housing line up. NOTE: Make sure no insulation is between the housing and the cowl.
  2. Position the steering column bearing housing assembly (1) to the cowl, install the three bolts (2) and tighten to 9 N•M (80 in. lbs.).
  3. Reposition the insulation as necessary.
  4. Apply rose water to the shaft and bushing and carefully install the shaft into the bushing.
  5. Install the upper intermediate shaft coupler (2) to the steering column.
  6. Install the coupler pinch bolt (1) and tighten to 45 N•m (33 ft. lbs.).
  7. If equipped, position the lower panel and install the push in retainers (1).
  8. From the engine compartment, install the lower intermediate shaft to upper intermediate shaft pinch bolt (3) and tighten to 45 N•M (33 ft. lbs.).
  9. Remove the steering wheel retainer.

Scheme 26

Scheme 26: REMOVAL
Scheme 26: REMOVAL
CAUTIONSteering column module is centered to the vehicles steering system. Failure to keep the system and steering column module centered and locked/inhibited from rotating can result in steering column module damage. Refer to CLOCKSPRING , STANDARD PROCEDURE .
  1. Remove the steering column from the vehicle. Refer to «COLUMN , REMOVAL»(/jeep/grand-cherokee/wk2-2010-2013/remont/manual-power-steering/#steering-system__removal) .
  2. Place steering column on a flat bench, with the tilt motor (2) over the edge.
  3. Remove the three bolts (3) that hold the tilt motor to the steering column assembly.
  4. Pull the tilt motor (2) away from the steering column assembly and pull off of the flex drive (1).
  1. With the steering column on a flat bench, insert the flex drive (1) into the tilt motor (2).
  2. Rotate the tilt motor into position and install on the steering column assembly.
  3. Install the three bolts (3) to attach the tilt motor (2) to the steering column assembly and tighten to 4 N.m (35 in. lbs.)
  4. Install the steering column. Refer to «COLUMN , INSTALLATION»(/jeep/grand-cherokee/wk2-2010-2013/remont/manual-power-steering/#steering-system__installation) .
  5. Perform the memory seat module standardization procedure. Refer to «STANDARD PROCEDURE»(/jeep/grand-cherokee/wk2-2010-2013/remont/seats/#memory-seat-module-msmd-electrical-diagnostics) .

Scheme 27

Scheme 27: REMOVAL
Scheme 27: REMOVAL
CAUTIONSteering column module is centered to the vehicles steering system. Failure to keep the system and steering column module centered and locked/inhibited from rotating can result in steering column module damage. Refer to CLOCKSPRING , STANDARD PROCEDURE .

Scheme 28

Scheme 28
Scheme 28
  1. Remove the pinch bolt (2) from the lower coupling and separate from the steering rack shaft (3).
  2. Remove the pinch bolt (3) from the upper coupling (2) and separate from the upper intermediate shaft (1). 1 - INTERMEDIATE SHAFT 2 - MASTER CYLINDER
  3. Remove the shaft (1) out from the top by the master cylinder (2).
1 - INTERMEDIATE SHAFT
2 - MASTER CYLINDER
CAUTIONSteering column module is centered to the vehicles steering system. Failure to keep the system and steering column module centered and locked/inhibited from rotating can result in steering column module damage. Refer to CLOCKSPRING , STANDARD PROCEDURE .
  1. Install the shaft (1) in from the top by the master cylinder (2).
  2. Install lower intermediate shaft coupler (2) to upper intermediate shaft (1).
  3. Install bolt (3) and tighten to 45 N.m (33 ft. lbs.).
  4. Slide lower intermediate shaft coupler onto steering gear pinion shaft (3).
  5. Install coupler pinch bolt (2) and tighten to 45 N.m (33 ft. lbs.)
CAUTIONSteering column module is centered to the vehicles steering system. Failure to keep the system and steering column module centered and locked/inhibited from rotating can result in steering column module damage. Refer to CLOCKSPRING , STANDARD PROCEDURE .

Scheme 29

Scheme 29
Scheme 29
  1. Remove the pinch bolt (3) from the upper coupling (2).
  2. Remove the steering column from the vehicle. Refer to «COLUMN , REMOVAL»(/jeep/grand-cherokee/wk2-2010-2013/remont/manual-power-steering/#steering-system__removal) .
  3. Remove the coupler pinch bolt (1).
  4. Slide the upper intermediate shaft (3) off the splines of the steering column.
CAUTIONSteering column module is centered to the vehicles steering system. Failure to keep the system and steering column module centered and locked/inhibited from rotating can result in steering column module damage. Refer to CLOCKSPRING , STANDARD PROCEDURE .
  1. Slide upper intermediate shaft (3) onto splines of steering wheel assembly (2).
  2. Install coupler pinch bolt (1) and tighten to 45 N.m (33 ft. lbs.)
  3. Install column in vehicle. Refer to «COLUMN , INSTALLATION»(/jeep/grand-cherokee/wk2-2010-2013/remont/manual-power-steering/#steering-system__installation) .
  4. Slide coupler onto upper intermediate shaft (1).
  5. Install pinch bolt (3) and tighten to 45 N.m (33 ft. lbs.).

The steering column shroud is serviced with the steering column module. Refer to MODULE, STEERING COLUMN , DESCRIPTION .

WARNINGBefore servicing the steering column the airbag system must be disarmed. Failure to do so may result in accidental deployment of the airbag and possible personal injury. Refer to AIR BAG, DRIVER , REMOVAL .
  1. Position front wheels straight ahead.
  2. Disconnect and isolate the negative (ground) cable from the battery.
  3. Disable and remove the drivers side airbag. Refer to «AIR BAG, DRIVER , REMOVAL»(/jeep/grand-cherokee/wk2-2010-2013/remont/airbag/#restraints-service-information) .
  4. Disconnect all electrical connectors.
  5. Remove the steering wheel bolt (1).
  6. Remove steering wheel damper, if equipped.
  7. Slide the steering wheel (2) off the steering column assembly.
  1. Install steering wheel (2) onto the column. NOTE: Do not reuse the old steering wheel bolt (1) (a new bolt must be used) NOTE: Be certain that the steering wheel mounting bolt is tightened to the proper torque specification to ensure proper clockspring operation.
  2. Install steering wheel damper, if equipped.
  3. Install the new steering wheel bolt (1). Tighten the bolt to 80 N.m (59 ft. lbs.).
  4. Reconnect all electrical connectors.
  5. Install the drivers side air bag. Refer to «AIR BAG, DRIVER , INSTALLATION»(/jeep/grand-cherokee/wk2-2010-2013/remont/airbag/#restraints-service-information) .
  6. Reconnect the negative (ground) cable to the battery.

Scheme 30

Scheme 30: DESCRIPTION
Scheme 30: DESCRIPTION

A rack and pinion steering gear is made up of two main components, the pinon shaft (1) and the rack (2). The gear cannot be adjusted or internally serviced. If a malfunction or a fluid leak occurs, the gear must be replaced as an assembly.

3.6L

CAUTIONThe Steering Column Control Module (SCCM) is centered to the vehicles steering system. Failure to keep the system and steering column module centered and locked/inhibited from rotating can result in SCCM damage.

Scheme 31

Scheme 31
Scheme 31

Scheme 32

Scheme 32
Scheme 32

Scheme 33

Scheme 33
Scheme 33

Scheme 34

Scheme 34
Scheme 34

Scheme 35

Scheme 35
Scheme 35
  1. Place the front wheels in the straight ahead position with the steering wheel centered and locked with a steering wheel lock .
  2. Drain or siphon the power steering system.
  3. Raise and support the vehicle. Refer to «JACKING AND HOISTING LIFT POINTS»(/jeep/grand-cherokee/wk2-2010-2013/remont/fuses-circuit-breakers/#vehicle-quick-reference) .
  4. Remove the front skid plate. Refer to «PLATE, SKID, FRONT , REMOVAL»(/jeep/grand-cherokee/wk2-2010-2013/remont/frames-subframes-crossmembers/#frame-and-bumpers) .
  5. Remove the steering shaft coupler pinch bolt (2) and disconnect the coupler (1) from the steering shaft (3).
  6. Disconnect the pressure line (1), and the return line (2) at the gear (3).
  7. Remove the front tires and wheels.
  8. Remove the RH shock. Refer to «SHOCK ABSORBER, SUSPENSION , REMOVAL»(/jeep/grand-cherokee/wk2-2010-2013/remont/suspension-front/#front-suspension-wheel-alignment) .
  9. Remove the outer tie rod ends. Refer to «END, TIE ROD , REMOVAL»(/jeep/grand-cherokee/wk2-2010-2013/remont/manual-power-steering/#steering-system) .
  10. Remove the steering gear retaining nuts/bolts (2).
  11. Lift and rotate the steering gear (2) so that the steering shaft (3) is forward to clear the oil pan (1) when removing the steering gear (2) through the RH wheel area.
  12. Lift and rotate the steering gear (1) as necessary to remove from behind the knuckle/rotor assembly (2) of the RH wheel area.

5.7L/3.0L

CAUTIONThe Steering Column Control Module (SCCM) is centered to the vehicles steering system. Failure to keep the system and steering column module centered and locked/inhibited from rotating can result in SCCM damage.

Scheme 36

Scheme 36
Scheme 36
  1. If replacing the steering gear, remove the outer tie rod ends. Refer to «END, TIE ROD , REMOVAL»(/jeep/grand-cherokee/wk2-2010-2013/remont/manual-power-steering/#steering-system) .
  2. Remove the engine cradle (crossmember). Refer to «CROSSMEMBER, CRADLE, ENGINE AND SUSPENSION , REMOVAL»(/jeep/grand-cherokee/wk2-2010-2013/remont/frames-subframes-crossmembers/#frame-and-bumpers) .
  3. Remove steering gear retaining nuts/bolts (2).
  4. Rotate and shift the steering gear (3) to the right enough to lift the LH side of the steering gear (3) above the engine cradle (1), then remove the steering gear (3) by moving to the right above the engine cradle (1).
CAUTIONThe Steering Column Control Module (SCCM) is centered to the vehicles steering system. Failure to keep the system and steering column module centered and locked/inhibited from rotating can result in SCCM damage.
  1. Lift and rotate the steering gear (1) as necessary to install from behind the knuckle/rotor assembly (2) of the RH wheel area.
  2. Rotate the steering gear (1) into position, install the steering gear retaining nuts/bolts (2) and tighten to 244 N.m (180 ft. lbs.).
  3. Install the outer tie rod ends. Refer to «END, TIE ROD , INSTALLATION»(/jeep/grand-cherokee/wk2-2010-2013/remont/manual-power-steering/#steering-system) .
  4. Install the RH shock. Refer to «SHOCK ABSORBER, SUSPENSION , INSTALLATION»(/jeep/grand-cherokee/wk2-2010-2013/remont/suspension-front/#front-suspension-wheel-alignment) .
  5. Connect the pressure line (1), and the return line (2) at the gear (3) and tighten to 28 N.m (21 ft. lbs.). CAUTION: The steering gear must be centered prior to installing the coupler to prevent clockspring damage.
  6. Connect the steering shaft coupler (1) to the steering shaft (3), install a new coupler pinch bolt (2) and tighten to 49 N.m (36 ft. lbs.).
  7. Install the front skid plate. Refer to «PLATE, SKID, FRONT , INSTALLATION»(/jeep/grand-cherokee/wk2-2010-2013/remont/frames-subframes-crossmembers/#frame-and-bumpers) .
  8. Install the wheels and tires. Refer to «WHEELS , STANDARD PROCEDURE»(/jeep/grand-cherokee/wk2-2010-2013/remont/wheel-tire-system/#tires-wheels-service-information) .
  9. Remove the supports and lower the vehicle.
  10. Remove the steering wheel lock.
  11. Fill the power steering pump. Refer to «STANDARD PROCEDURE»(/jeep/grand-cherokee/wk2-2010-2013/remont/manual-power-steering/#steering-system) .
  12. Set the toe. Refer to «WHEEL ALIGNMENT , STANDARD PROCEDURE»(/jeep/grand-cherokee/wk2-2010-2013/remont/suspension-front/#front-suspension-wheel-alignment) .
CAUTIONThe Steering Column Control Module (SCCM) is centered to the vehicles steering system. Failure to keep the system and steering column module centered and locked/inhibited from rotating can result in SCCM damage.
  1. Position the steering gear (3) between the RH upper and lower parts of the cradle (crossmember) (1) as far as necessary to lower the LH side of the steering gear (3) into position and shift to the left.
  2. Install the steering gear retaining bolts/nuts (2) and tighten to 244 N.m (180 ft. lbs.).
  3. Install the engine cradle (1). Refer to «CROSSMEMBER, CRADLE, ENGINE AND SUSPENSION , INSTALLATION»(/jeep/grand-cherokee/wk2-2010-2013/remont/frames-subframes-crossmembers/#frame-and-bumpers) .
  4. If the outer tie rods were removed, install the tie rod ends. Refer to «END, TIE ROD , INSTALLATION»(/jeep/grand-cherokee/wk2-2010-2013/remont/manual-power-steering/#steering-system) .
  5. Perform a front alignment. Refer to «WHEEL ALIGNMENT , STANDARD PROCEDURE»(/jeep/grand-cherokee/wk2-2010-2013/remont/suspension-front/#front-suspension-wheel-alignment) .

TIE ROD

Tie rod free-play can be measured using the following hand methods

Note. When checking free-play, DO NOT rotate the tie rod. Just because a tie rod rotates easily, it is not necessarily faulty.

Note. Always check and repair (if necessary) outer tie rod free-play before checking inner tie rod free-play. False results can otherwise be obtained.

Scheme 37

Scheme 37: OUTER TIE ROD
Scheme 37: OUTER TIE ROD

Grasp the outer tie rod near the ball stud and attempt to move the tie rod straight up and down. If any free-play is felt, replace the outer tie rod. Refer to END, TIE ROD , REMOVAL . If no free-play is felt at the outer tie rod, attempt to move the inner tie rod in the same manner. Refer to the following procedure.

Scheme 38

Scheme 38: INNER TIE ROD
Scheme 38: INNER TIE ROD

Grasp the inner tie rod near the steering gear bellows and attempt to move the tie rod straight up and down. If any free-play is felt, replace the steering gear. Refer to GEAR , REMOVAL .

STEERING LINKAGE

The tie rod end and ball stud seals should be inspected during all oil changes. If a seal is damaged, replace the tie rod.

CAUTIONIf any steering components are replaced or serviced an alignment must be performed, to ensure the vehicle meets all alignment specifications.

Scheme 39

Scheme 39: INNER TIE ROD
Scheme 39: INNER TIE ROD

Note. Count the number of turns when removing the outer tie rod end from the inner tie rod end. This will aid in setting the toe after installation.

Scheme 40

Scheme 40
Scheme 40
  1. Remove the outer tie rod end. Refer to «END, TIE ROD , REMOVAL»(/jeep/grand-cherokee/wk2-2010-2013/remont/manual-power-steering/#steering-system) .
  2. Remove the jam nut.
  3. Remove the two clamps (1, 3) for the inner tie rod boot (2).
  4. Remove the boot (2) from the tie rod.
  5. Install the Inner Tie Rod Socket (special tool #10087-6, Socket, Inner Tie Rod) (1) and Inner Tie Rod Adapter Wrench (special tool #10087-2A, Adapter Wrench, Inner Tie Rod) (2) and remove the inner tie rod end.

Scheme 41

Scheme 41: OUTER TIE ROD END
Scheme 41: OUTER TIE ROD END

Note. Do not twist the boot anytime during removal or installation.

Scheme 42

Scheme 42
Scheme 42
  1. Loosen the jam nut (4).
  2. Remove the outer tie rod end nut (1) from the ball stud of the outer tie rod (3).
  3. Separate the outer tie rod end (4) from the steering knuckle (2) using Tie Rod Puller (special tool #C-3894-A, Puller, Tie Rod) (1). NOTE: Count the number of turns when removing the tie rod end as a reference point for installation.
  4. Remove the outer tie rod end (4) from the inner tie rod.

INNER TIE ROD

  1. Apply Mopar® Lock and Seal Adhesive or equivalent thread lock adhesive to the inboard side of the inner tie rod end.
  2. Thread the inner tie rod to the rack and pinion.
  3. Using the Inner Tie Rod Socket (special tool #10087-6, Socket, Inner Tie Rod) (1) and the Inner Tie Rod Adapter Wrench (special tool #10087-2A, Adapter Wrench, Inner Tie Rod) (2), tighten the inner tie rod end to 88 N.m (65 ft. lbs.). NOTE: Lubricant between the boot and tie rod end will allow the toe adjustment procedure without twisting the boot.
  4. Apply a small amount of Mopar® Lubriplate, or equivalent in the recessed area of the inner tie rod where the small end of the boot attaches.
  5. Position the large clamp (1) on the boot (2) and install the boot over the inner tie rod and rack.
  6. Engage the small end of boot (2) in the groove and install the small boot clamp (3).
  7. Using a crimp tool, or equivalent, tighten the large boot clamp (1).
  8. Install the jam nut (3) to the inner tie rod end. NOTE: The toe adjustment procedure must be performed after installing the outer tie rod.
  9. Install the outer tie rod. Refer to «END, TIE ROD , INSTALLATION»(/jeep/grand-cherokee/wk2-2010-2013/remont/manual-power-steering/#steering-system) .
  10. After toe adjustment, tighten the jam nut (3) to 75 N.m (55 ft. lbs).

OUTER TIE ROD END

Note. Do not twist the boot at anytime during removal or installation.

Note. Make sure jam nut (3) is installed on inner tie rod end (4) before the outer tie rod end (2) is installed.

  1. Thread the outer tie rod end (3) onto the inner tie rod, to it's original position.
  2. Install the outer tie rod end (3) into the steering knuckle, install the nut and tighten to 95 N.m (70 ft. lbs.).
  3. Set wheel toe pattern. Refer to «WHEEL ALIGNMENT , STANDARD PROCEDURE»(/jeep/grand-cherokee/wk2-2010-2013/remont/suspension-front/#front-suspension-wheel-alignment) .
  4. Tighten the jam nut (4) to 75 N.m (55 ft. lbs.).

Note. There is no internal service of the Electro-Hydraulic Power Steering (EHPS) pump. Replace the EHPS pump as an assembly, including the brackets, and EHPS module.

The EHPS pump (3) replaces the conventional belt-driven power steering pump and draws its power from the 12 volt electrical system instead of the engine crankshaft reducing engine load.

The EHPS pump (3) mounts to the cradle in front of the engine. For more information on the EHPS pump/module, refer to appropriate Electrical Diagnostic article.

Scheme 43

Scheme 43: WITHOUT EHPS
Scheme 43: WITHOUT EHPS

Hydraulic pressure for the power steering system is provided by a belt driven power steering pump (1). The pump shaft has a pressed-on drive pulley that is belt driven by the crankshaft pulley. The system uses a remote power steering reservoir mounted to a bracket near the air cleaner.

CAUTIONThere is an Electro-Hydraulic Power Steering (EHPS) pump on some vehicles requiring a different fluid. Do not mix power steering fluid types. Damage may result to the power steering pump and system if any other fluid is used. The mechanical power steering pump systems on this vehicle require the use of Power Steering Fluid +4, which meets material specification MS-9602 or equivalent. The EHPS system uses fluid which meets material specification MS-11655 or equivalent. Do not overfill.

The power steering pump is a constant flow rate and displacement, vane-type pump. The pump internal parts operate submerged in fluid. The flow control orifice is part of the high pressure line fitting. The pressure relief valve inside the flow control valve limits the pump pressure. The reservoir is remote and is attached to the body behind the engine air cleaner body. The power steering pump is connected to the steering gear by the pressure and return hoses.

Note. Power steering pumps have different pressure rates and are not interchangeable with other pumps.

CAUTIONThere is an Electro-Hydraulic Power Steering (EHPS) pump on some vehicles requiring a different fluid. Do not mix power steering fluid types. Damage may result to the power steering pump and system if any other fluid is used. The mechanical power steering pump systems on this vehicle require the use of Power Steering Fluid +4, which meets material specification MS-9602 or equivalent. The EHPS system uses fluid which meets material specification MS-11655 or equivalent. Do not overfill.

Multiple modules work together to improve vehicle steering assist at different rates at different speeds. At slow speeds (parking maneuvers) more assist is available and at high speeds less assist is available. The EHPS module uses the CAN - C data bus for inputs and outputs of the information necessary for operation. The use of a scan tool is necessary for diagnostics. EHPS module faults are stored in a diagnostic program memory and are accessible with the scan tool. Faults remain in memory until cleared, or until after the vehicle is started approximately 50 times. Stored faults are not erased if the battery is disconnected. For descriptions and procedures related to DTCs. Refer to DIAGNOSIS AND TESTING .

The Electro-Hydraulic Power Steering (EHPS) Pump assembly contains a control module, brushless electric motor, and hydraulic pump integrated into a single unit. The EHPS Pump draws power from the 12 volt electrical system and provides the necessary flow and pressure to the steering gear to provide normal power steering. The output flow of the EHPS Pump is varied as a function of Steering Wheel Rate (received from SAS) and Vehicle Speed (received from ABS Module) in order to provide the optimum flow of power steering fluid to the steering gear under all operating conditions. The EHPS Pump will start to provide steering assist when the Vehicle speed message greater than 5 km/h (3 mph) is received on CAN C. If the Vehicle Speed message is missing at vehicle startup, the EHPS Pump will not operate. If the Vehicle Speed message is lost during operation the EHPS pump will use a default vehicle speed of 85 km/h (59 mph) to calculate desired flow and as a result, steering effort will no longer be speed sensitive. If the Steering Wheel Position message is lost the EHPS Pump will use a default steering wheel rate of 230°/sec to calculate desired flow and as a result, steering effort may be higher on evasive steering maneuvers. The EHPS pump will resume normal operation automatically once any missing message or out of range condition noted above is restored to normal.

POWER STEERING PUMP AND HOSES

Note. This information is designed to be used in conjunction with the diagnostic charts at the beginning of the Steering article. Refer to DIAGNOSIS AND TESTING .

CHECKING FOR WEAR OF POWER STEERING PUMP INTERNAL COMPONENTS

  1. Place gear selector in PARK (or NEUTRAL) with wheels chalked.
  2. With the engine idling, have a helper turn the steering wheel.
  3. Using an electronic listening tool, determine if noise is coming from the pump.
  4. Increase the engine speed and have a helper turn the steering wheel. Does the noise change with load?
  5. Replace the power steering pump if excessive noise is present. Refer to «PUMP , REMOVAL»(/jeep/grand-cherokee/wk2-2010-2013/remont/manual-power-steering/#steering-system) .

CHECKING FOR POWER STEERING HOSES TOUCHING BODY OR FRAME OF VEHICLE

Check hoses and hose tubes as following

  1. Inspect hoses and hose tubes for witness marks. If witness marks are present, adjust hose(s) to the proper position by loosening, repositioning and tightening attachments to the specified torque. Refer to «SPECIFICATIONS»(/jeep/grand-cherokee/wk2-2010-2013/remont/manual-power-steering/#steering-system__specifications) . Do not bend tubing to adjust. Replace the hose assembly if damaged.
  2. Check fastener torque of hose mounting brackets and tube nuts. Refer to «SPECIFICATIONS»(/jeep/grand-cherokee/wk2-2010-2013/remont/manual-power-steering/#steering-system__specifications) .
  3. Have a helper bump the steering gear off of the stops to induce pressure fluctuations which may move the hose. If hose contact is made, adjust hose(s) to the proper position by loosening, repositioning and tightening attachments to the specified torque. Refer to «SPECIFICATIONS»(/jeep/grand-cherokee/wk2-2010-2013/remont/manual-power-steering/#steering-system__specifications) . Do not bend tubing to adjust. Replace the hose assembly if damaged.

Scheme 44

Scheme 44: 3.6L
Scheme 44: 3.6L

Scheme 45

Scheme 45
Scheme 45

Scheme 46

Scheme 46
Scheme 46
  1. Siphon power steering reservoir.
  2. Remove the serpentine drive belt. Refer to «BELT, SERPENTINE , REMOVAL»(/jeep/grand-cherokee/wk2-2010-2013/remont/accessory-drive-belts/#engine-cooling-system__removal) .
  3. Remove the air cleaner body. Refer to «BODY, AIR CLEANER»(/jeep/grand-cherokee/wk2-2010-2013/remont/mechanical/#36l-engine-service-information) . NOTE: The A/C compressor can be repositioned without opening the system.
  4. Remove the two A/C compressor upper retainer bolts (1).
  5. Raise and support the vehicle. Refer to «JACKING AND HOISTING LIFT POINTS»(/jeep/grand-cherokee/wk2-2010-2013/remont/fuses-circuit-breakers/#vehicle-quick-reference) .
  6. Remove the front skid plate. Refer to «PLATE, SKID, FRONT , REMOVAL»(/jeep/grand-cherokee/wk2-2010-2013/remont/frames-subframes-crossmembers/#frame-and-bumpers) .
  7. Remove the nut and line routing clip from the stud (4) and position the line aside and remove the stud (4).
  8. Remove the A/C compressor lower retainer bolt (1) and position the compressor aside for access to the upper power steering pump bolts.
  9. Disconnect the supply hose (3) and the pressure hose (5) at the power steering pump.
  10. Remove the power steering pump mounting bolt (6).
  11. Remove the power steering pump mounting bolts (1) and remove the pump.
  12. Remove and transfer any necessary components.

5.7L

  1. Siphon power steering reservoir.
  2. Remove the air cleaner body. Refer to «BODY, AIR CLEANER»(/jeep/grand-cherokee/wk2-2010-2013/remont/mechanical/#57l-engine-service-information) .
  3. Remove the serpentine drive belt. Refer to «5.7L ENGINE»(/jeep/grand-cherokee/wk2-2010-2013/remont/accessory-drive-belts/#engine-cooling-system__57l-engine) .
  4. Disconnect the supply hose (3) and the pressure line (4) at the power steering pump (1).
  5. Using the holes in the pulley for access, remove the three pump mounting bolts (5).
  6. Remove and transfer any necessary components.

3.0L DIESEL

  1. Siphon the power steering reservoir.
  2. Disconnect and isolate the battery negative cable. Refer to «CABLES, BATTERY , REMOVAL»(/jeep/grand-cherokee/wk2-2010-2013/remont/charging-system/#battery-system-service-information) .
  3. Disconnect the two EHPS pump electrical connectors and the wiring harness to bracket routing clip.
  4. Disconnect the supply and return lines from the EHPS pump.
  5. Remove the pressure and return line routing clip bolt from the pump bracket.
  6. Raise and support the vehicle. Refer to «JACKING AND HOISTING LIFT POINTS»(/jeep/grand-cherokee/wk2-2010-2013/remont/fuses-circuit-breakers/#vehicle-quick-reference) .
  7. If equipped, remove the front skid plate. Refer to «PLATE, SKID, FRONT , REMOVAL»(/jeep/grand-cherokee/wk2-2010-2013/remont/frames-subframes-crossmembers/#frame-and-bumpers) .
  8. Remove the pressure line retaining bolt and line from the EHPS pump.
  9. Loosen the routing clip retaining bolt and position the pressure line aside for access to remove the pump.
  10. Remove the three EHPS pump retaining bolts and remove the pump from the vehicle.
  11. Remove and transfer any necessary components.
  1. Position the power steering pump, install the pump mounting bolts (1) and tighten to 28 N.m (21 ft. lbs.).
  2. Install the power steering pump mounting bolt (6) and tighten to 28 N.m (21 ft. lbs.).
  3. Install the pressure hose (5) to the power steering pump and tighten to 28 N.m (21 ft. lbs.).
  4. Install the supply hose and clamp (3) to the power steering pump.
  5. Position the A/C compressor and install the lower bolt (1) and the stud (4). Tighten the bolt to 28 N.m (21 ft. lbs.).
  6. Position the line with the routing clip on the stud (4), install the nut and tighten to 40 N.m (30 ft. lbs.).
  7. Install the front skid plate. Refer to «PLATE, SKID, FRONT , INSTALLATION»(/jeep/grand-cherokee/wk2-2010-2013/remont/frames-subframes-crossmembers/#frame-and-bumpers) .
  8. Remove the supports and lower the vehicle.
  9. Install the two A/C compressor upper retainer bolts (1) and tighten to 28 N.m (21 ft. lbs.).
  10. Install the drive belt. Refer to «BELT, SERPENTINE , INSTALLATION»(/jeep/grand-cherokee/wk2-2010-2013/remont/accessory-drive-belts/#engine-cooling-system__installation) .
  11. Install the air cleaner body. Refer to «INSTALLATION»(/jeep/grand-cherokee/wk2-2010-2013/remont/mechanical/#36l-engine-service-information) .
  12. Refill the power steering fluid and bleed the system. Refer to «STANDARD PROCEDURE»(/jeep/grand-cherokee/wk2-2010-2013/remont/manual-power-steering/#steering-system) .
  1. Position the power steering pump (1) and using the holes in the pulley for access, install 3 pump mounting bolts (5) and tighten to 23 N.m (17 ft. lbs.).
  2. Install the pressure line (4) on the pump (1) and tighten the nut to 28 N.m (21 ft. lbs.).
  3. Install the supply hose (3) on the pump (1).
  4. Install the drive belt. Refer to «5.7L ENGINE»(/jeep/grand-cherokee/wk2-2010-2013/remont/accessory-drive-belts/#engine-cooling-system) .
  5. Install the air cleaner body. Refer to «INSTALLATION»(/jeep/grand-cherokee/wk2-2010-2013/remont/mechanical/#57l-engine-service-information) .
  6. Fill and bleed the system with power steering fluid. Refer to «STANDARD PROCEDURE»(/jeep/grand-cherokee/wk2-2010-2013/remont/manual-power-steering/#steering-system) .
CAUTIONThis vehicle is equipped with an Electro-Hydraulic Power Steering (EHPS) pump requiring a different fluid. Do not mix power steering fluid types. Damage may result to the power steering pump and system if any other fluid is used. The EHPS system uses fluid which meets material specification MS-11655 or equivalent. Do not overfill.
  1. Position the EHPS pump, install the three retaining bolts and tighten to 54 N•m (40 ft. lbs.). NOTE: Make sure the O-ring is clean and seats properly.
  2. Position the pressure line routing clip under the bolt, install the pressure line into the pump and tighten the routing clip retaining bolt to 12 N•m (9 ft. lbs./106 in. lbs.).
  3. Install the pressure line routing clip to pump bracket retaining bolt and tighten to 20 N•m (15 ft. lbs./177 in. lbs).
  4. If equipped, install the front skid plate. Refer to «PLATE, SKID, FRONT , INSTALLATION»(/jeep/grand-cherokee/wk2-2010-2013/remont/frames-subframes-crossmembers/#frame-and-bumpers) .
  5. Remove the supports and lower the vehicle.
  6. Connect the supply and return lines to the EHPS pump.
  7. Connect the two EHPS pump electrical connectors and the wiring harness to bracket routing clip.
  8. Connect the battery negative cable.
  9. Refill the power steering fluid and bleed the system. Refer to «STANDARD PROCEDURE»(/jeep/grand-cherokee/wk2-2010-2013/remont/manual-power-steering/#steering-system) .

Note. Some vehicles equipped with Electro-Hydraulic Power Steering (EHPS) may not have a power steering cooler.

Scheme 47

Scheme 47: DESCRIPTION
Scheme 47: DESCRIPTION
1 - RETURN HOSE
2 - FLUID COOLER
3 - PRESSURE HOSE

The power steering fluid cooler (2) is located at the front of the vehicle. It is mounted to the radiator support just forward of the air-conditioning condenser and just rearward of the front fascia. The cooler is positioned so it is in the air flow through the front fascia of the vehicle.

Scheme 48

Scheme 48: REMOVAL
Scheme 48: REMOVAL

Scheme 49

Scheme 49
Scheme 49
  1. Drain the power steering fluid out of the reservoir.
  2. Remove the grille. Refer to «GRILLE , REMOVAL»(/jeep/grand-cherokee/wk2-2010-2013/remont/gauges-instrument-panels/#body-interior-exterior) .
  3. Release the spring clamps (2) and remove both hoses from the cooler (1).
  4. Squeeze the two cooler retainer clips (1) near the base (2), behind the cooler pipe (3) to open the clip and remove the cooler.
  1. Position and install the power steering cooler (3) to the vehicle by pushing into the retaining clip (1).
  2. Install both hoses and spring clamps (2) to the cooler (1).
  3. Refill the power steering fluid and bleed the system. Refer to «STANDARD PROCEDURE»(/jeep/grand-cherokee/wk2-2010-2013/remont/manual-power-steering/#steering-system) .
  4. Start engine and check for leaks.
  5. Install the grille. Refer to «GRILLE , INSTALLATION»(/jeep/grand-cherokee/wk2-2010-2013/remont/gauges-instrument-panels/#body-interior-exterior) .

POWER STEERING FLUID LEVEL CHECKING

WARNINGFluid level should be checked with the engine off to prevent personal injury from moving parts.
CAUTIONThere is an Electro-Hydraulic Power Steering (EHPS) pump on some vehicles requiring a different fluid. Do not mix power steering fluid types. Damage may result to the power steering pump and system if any other fluid is used. The mechanical power steering pump systems on this vehicle require the use of Power Steering Fluid +4, which meets material specification MS-9602 or equivalent. The EHPS system uses fluid which meets material specification MS-11655 or equivalent. Do not overfill.

The power steering fluid level can be viewed through the reservoir with MAX and MIN level indicators on the side. Before opening power steering system, wipe the reservoir filler cap free of dirt and debris. When the fluid is at normal ambient temperature, approximately 21°C to 27°C (70°F to 80°F), the fluid level should between MAX and MIN. Use only proper fluids. Do not over fill.

PRESSURE - PUMP TO GEAR, GAS

Note. 3.6L shown in illustration, others similar.

Scheme 50

Scheme 50
Scheme 50
  1. Siphon the power steering fluid from the reservoir.
  2. Raise and support the vehicle. Refer to «JACKING AND HOISTING LIFT POINTS»(/jeep/grand-cherokee/wk2-2010-2013/remont/fuses-circuit-breakers/#vehicle-quick-reference) .
  3. Remove the front skid plate. Refer to «PLATE, SKID, FRONT , REMOVAL»(/jeep/grand-cherokee/wk2-2010-2013/remont/frames-subframes-crossmembers/#frame-and-bumpers) .
  4. Disconnect the pressure line (5) at the pump.
  5. Disconnect the pressure line (1) at the gear (3).
  6. Loosen the forward mounting bolt (2) to the cradle.
  7. Remove the two mounting brackets (3) bolts for the pressure line at the engine cradle.
  8. Lift the pressure line off the forward mounting bolt (2) to remove from vehicle.

GEAR TO COOLER - GAS

Note. 3.6L shown in illustration, others similar.

Scheme 51

Scheme 51: GEAR TO COOLER - GAS
Scheme 51: GEAR TO COOLER - GAS
  1. Siphon the power steering fluid from the reservoir (2).
  2. Remove the grille. Refer to «GRILLE , REMOVAL»(/jeep/grand-cherokee/wk2-2010-2013/remont/gauges-instrument-panels/#body-interior-exterior) .
  3. Raise and support the vehicle. Refer to «JACKING AND HOISTING LIFT POINTS»(/jeep/grand-cherokee/wk2-2010-2013/remont/fuses-circuit-breakers/#vehicle-quick-reference) .
  4. Remove the front skid plate. Refer to «PLATE, SKID, FRONT , REMOVAL»(/jeep/grand-cherokee/wk2-2010-2013/remont/frames-subframes-crossmembers/#frame-and-bumpers) .
  5. Remove the line routing clip to cradle bolt.
  6. Disconnect the return hose (2) at the gear (3).
  7. Disconnect the clamp (2) and remove the hose from the cooler (1) from the vehicle.

COOLER TO RESERVOIR - GAS

Note. 3.6L shown in illustration, others similar.

Scheme 52

Scheme 52: COOLER TO RESERVOIR - GAS
Scheme 52: COOLER TO RESERVOIR - GAS
  1. Siphon the power steering fluid from the reservoir (2).
  2. Remove the air cleaner body (4). Refer to «BODY, AIR CLEANER»(ref-466389-S03602067412012042500000) or «BODY, AIR CLEANER»(/jeep/grand-cherokee/wk2-2010-2013/remont/mechanical/#36l-engine-service-information) or «BODY, AIR CLEANER»(/jeep/grand-cherokee/wk2-2010-2013/remont/mechanical/#57l-engine-service-information) .
  3. Disconnect the upper return hose (3) at the reservoir (2).
  4. Remove the grille. Refer to «GRILLE , REMOVAL»(/jeep/grand-cherokee/wk2-2010-2013/remont/gauges-instrument-panels/#body-interior-exterior) .
  5. Disconnect the clamp (2) and remove the hose from the cooler (1) and from the vehicle.

RESERVOIR TO PUMP - GAS

Note. 3.6L shown in illustration, others similar.

  1. Siphon the power steering fluid from the reservoir (2).
  2. Remove the air cleaner body (4). Refer to «BODY, AIR CLEANER»(ref-466389-S03602067412012042500000) or «BODY, AIR CLEANER»(/jeep/grand-cherokee/wk2-2010-2013/remont/mechanical/#36l-engine-service-information) or «BODY, AIR CLEANER»(/jeep/grand-cherokee/wk2-2010-2013/remont/mechanical/#57l-engine-service-information) .
  3. Disconnect the lower return hose (3) at the reservoir (2). NOTE: A/C compressor removed for clarity.
  4. Disconnect the return hose (3) at the pump (4).
  5. Remove the return hose (3) from the vehicle.

PRESSURE - WITH EHPS, DIESEL

CAUTIONThis vehicle is equipped with an Electro-Hydraulic Power Steering (EHPS) pump requiring a different fluid. Do not mix power steering fluid types. Damage may result to the power steering pump and system if any other fluid is used. The EHPS system uses fluid which meets material specification MS-11655 or equivalent. Do not overfill.

Note. All views typical.

  1. Siphon the power steering reservoir.
  2. Raise and support the vehicle. Refer to «JACKING AND HOISTING LIFT POINTS»(/jeep/grand-cherokee/wk2-2010-2013/remont/fuses-circuit-breakers/#vehicle-quick-reference) .
  3. If equipped, remove the front skid plate. Refer to «PLATE, SKID, FRONT , REMOVAL»(/jeep/grand-cherokee/wk2-2010-2013/remont/frames-subframes-crossmembers/#frame-and-bumpers) .
  4. Remove the pressure line routing clip bolt from the pump bracket.
  5. Remove the pressure line routing clip retaining bolts from the cradle.
  6. Remove the wiring harness routing clip from the pump bracket for access to remove the pressure line.
  7. Remove the pressure line retaining bolt (4) and pressure line (5) from the pump (3).
  8. Remove the pressure line fitting (1) from the gear (3) and remove the pressure line from the vehicle.

SUPPLY/PUMP TO QUICK CONNECT - WITH EHPS, DIESEL

CAUTIONThis vehicle is equipped with an Electro-Hydraulic Power Steering (EHPS) pump requiring a different fluid. Do not mix power steering fluid types. Damage may result to the power steering pump and system if any other fluid is used. The EHPS system uses fluid which meets material specification MS-11655 or equivalent. Do not overfill.

Note. All views typical.

Scheme 53

Scheme 53
Scheme 53
  1. Siphon the power steering reservoir (2).
  2. Disconnect the supply hose (3) from the reservoir (2).
  3. Remove the engine air resonator assembly from between the throttle body and the air cleaner.
  4. Disconnect the supply hose from the routing clips.
  5. Disconnect the supply (2) and return (1) hoses from the EHPS pump (3).
  6. Raise and support the vehicle. Refer to «JACKING AND HOISTING LIFT POINTS»(/jeep/grand-cherokee/wk2-2010-2013/remont/fuses-circuit-breakers/#vehicle-quick-reference) .
  7. If equipped, remove the front skid plate. Refer to «PLATE, SKID, FRONT , REMOVAL»(/jeep/grand-cherokee/wk2-2010-2013/remont/frames-subframes-crossmembers/#frame-and-bumpers) .
  8. Disconnect the return line to cooler line quick connect.
  9. Remove the supply/return line assembly routing clip bolt from the pump bracket.
  10. Remove the routing clip retaining bolts as necessary and remove the assembly from the vehicle.

RETURN/COOLER LINES - WITH EHPS, DIESEL

CAUTIONThis vehicle is equipped with an Electro-Hydraulic Power Steering (EHPS) pump requiring a different fluid. Do not mix power steering fluid types. Damage may result to the power steering pump and system if any other fluid is used. The EHPS system uses fluid which meets material specification MS-11655 or equivalent. Do not overfill.

Note. All views typical.

  1. Siphon the power steering reservoir (2).
  2. Raise and support the vehicle. Refer to «JACKING AND HOISTING LIFT POINTS»(/jeep/grand-cherokee/wk2-2010-2013/remont/fuses-circuit-breakers/#vehicle-quick-reference) .
  3. If equipped, remove the front skid plate. Refer to «PLATE, SKID, FRONT , REMOVAL»(/jeep/grand-cherokee/wk2-2010-2013/remont/frames-subframes-crossmembers/#frame-and-bumpers) .
  4. Remove the return line fitting (2) from the gear (3).
  5. Remove the grille. Refer to «GRILLE , REMOVAL»(/jeep/grand-cherokee/wk2-2010-2013/remont/gauges-instrument-panels/#body-interior-exterior) .
  6. Remove the return/cooler line assembly to cradle routing clip retainers.
  7. Disconnect the quick connect fittings.
  8. Disconnect the clamps (2) and remove the hoses from the cooler (1), and remove the assembly from the vehicle.

Note. 3.6L shown in illustration, others similar.

  1. Position the line, slide retaining clip behind the forward retaining bolt (2) and tighten to 12 N.m (105 in. lbs.).
  2. Install the two mounting bracket (3) bolts for the pressure line at the engine cradle and tighten to 12 N.m (105 in. lbs.).
  3. Connect the power steering pressure line (1) to the power steering gear (3) and tighten to 28 N.m (21 ft. lbs.).
  4. Connect the power steering pressure line (5) to the power steering pump and tighten to 28 N.m (21 ft. lbs.).
  5. Install the front skid plate. Refer to «PLATE, SKID, FRONT , INSTALLATION»(/jeep/grand-cherokee/wk2-2010-2013/remont/frames-subframes-crossmembers/#frame-and-bumpers) .
  6. Remove the supports and lower the vehicle.
  7. Refill the power steering fluid and bleed the system. Refer to «STANDARD PROCEDURE»(/jeep/grand-cherokee/wk2-2010-2013/remont/manual-power-steering/#steering-system) .

Note. 3.6L shown in illustration, others similar.

  1. Position the hose (2) to the vehicle.
  2. Install the line to cooler clip retaining bolt and tighten to 12 N.m (105 in. lbs.).
  3. Connect the return hose (2) to the gear (3) and tighten to 28 N.m (21 ft. lbs.).
  4. Connect the hose to the cooler (1) and install the clamp (2).
  5. Install the front skid plate. Refer to «PLATE, SKID, FRONT , INSTALLATION»(/jeep/grand-cherokee/wk2-2010-2013/remont/frames-subframes-crossmembers/#frame-and-bumpers) .
  6. Install the grille. Refer to «GRILLE , INSTALLATION»(/jeep/grand-cherokee/wk2-2010-2013/remont/gauges-instrument-panels/#body-interior-exterior) .
  7. Remove the supports and lower the vehicle.
  8. Refill the power steering fluid and bleed the system. Refer to «STANDARD PROCEDURE»(/jeep/grand-cherokee/wk2-2010-2013/remont/manual-power-steering/#steering-system) .

Note. 3.6L shown in illustration, others similar.

  1. Connect the hose to the cooler (1) and install the clamp (2).
  2. Connect the upper return hose (3) at the reservoir (2) and install the clamp.
  3. Install the grille. Refer to «GRILLE , INSTALLATION»(/jeep/grand-cherokee/wk2-2010-2013/remont/gauges-instrument-panels/#body-interior-exterior) .
  4. Install the air cleaner body. Refer to «INSTALLATION»(ref-466389-S06925811102012042500000) or «INSTALLATION»(/jeep/grand-cherokee/wk2-2010-2013/remont/mechanical/#36l-engine-service-information) or «INSTALLATION»(/jeep/grand-cherokee/wk2-2010-2013/remont/mechanical/#57l-engine-service-information) .
  5. Refill the power steering fluid and bleed the system. Refer to «STANDARD PROCEDURE»(/jeep/grand-cherokee/wk2-2010-2013/remont/manual-power-steering/#steering-system) .

Note. 3.6L shown in illustration, others similar.

Note. A/C compressor removed for clarity.

  1. Position the line (3) to the vehicle.
  2. Reconnect and clamp the power steering return hose (3) to the pump (4).
  3. Reconnect and clamp the lower return hose (3) to the reservoir (2).
  4. Install the air cleaner body. Refer to «INSTALLATION»(ref-466389-S06925811102012042500000) or «INSTALLATION»(/jeep/grand-cherokee/wk2-2010-2013/remont/mechanical/#36l-engine-service-information) or «INSTALLATION»(/jeep/grand-cherokee/wk2-2010-2013/remont/mechanical/#57l-engine-service-information) .
  5. Refill the power steering fluid and bleed the system. Refer to «STANDARD PROCEDURE»(/jeep/grand-cherokee/wk2-2010-2013/remont/manual-power-steering/#steering-system) .
CAUTIONThis vehicle is equipped with an Electro-Hydraulic Power Steering (EHPS) pump requiring a different fluid. Do not mix power steering fluid types. Damage may result to the power steering pump and system if any other fluid is used. The EHPS system uses fluid which meets material specification MS-11655 or equivalent. Do not overfill.

Note. All views typical.

Note. Make sure the O-ring is clean and seats properly.

  1. Position the pressure line in the vehicle, start the pressure line fitting (1) in the gear (3) and tighten to 28 N.m (21 ft. lbs.). NOTE: Make sure the O-ring is clean and seats properly.
  2. Insert the pressure line (5) into the pump (3), install the retaining bolt (4) and tighten to 20 N.m (15 ft. lbs./177 in. lb.).
  3. Install the pressure line to cradle routing clip bolts and tighten to 12 N.m (9 ft. lbs./106 in. lb.).
  4. Install the pressure line to pump bracket routing clip bolt and tighten to 8 N.m (71 in. lb.).
  5. Connect the wiring harness routing clip to the pump bracket.
  6. If equipped, install the front skid plate. Refer to «PLATE, SKID, FRONT , INSTALLATION»(/jeep/grand-cherokee/wk2-2010-2013/remont/frames-subframes-crossmembers/#frame-and-bumpers) .
  7. Remove the supports and lower the vehicle.
  8. Refill the power steering system with fluid and bleed the system. Refer to «STANDARD PROCEDURE»(/jeep/grand-cherokee/wk2-2010-2013/remont/manual-power-steering/#steering-system) .
CAUTIONThis vehicle is equipped with an Electro-Hydraulic Power Steering (EHPS) pump requiring a different fluid. Do not mix power steering fluid types. Damage may result to the power steering pump and system if any other fluid is used. The EHPS system uses fluid which meets material specification MS-11655 or equivalent. Do not overfill.

Note. All views typical.

  1. Position the supply/pump to quick connect line assembly in the vehicle and connect the quick connect fitting.
  2. Install the supply/pump to quick connect line assembly to cradle routing clip bolts and tighten to 12 N.m (9 ft. lbs./106 in. lb.).
  3. Install the supply/pump to quick connect line to pump bracket routing clip bolt and tighten to 8 N.m (71 in. lb.).
  4. If equipped, install the front skid plate. Refer to «PLATE, SKID, FRONT , INSTALLATION»(/jeep/grand-cherokee/wk2-2010-2013/remont/frames-subframes-crossmembers/#frame-and-bumpers) .
  5. Remove the supports and lower the vehicle.
  6. Connect the supply (1) and return (2) hoses to the EHPS pump (3).
  7. Attach the supply hose to all routing clips as removed.
  8. Connect the supply hose to the reservoir (2) with the clamp (3).
  9. Install the engine air resonator assembly between the throttle body and the air cleaner.
  10. Refill the power steering system with fluid and bleed the system. Refer to «STANDARD PROCEDURE»(/jeep/grand-cherokee/wk2-2010-2013/remont/manual-power-steering/#steering-system) .
CAUTIONThis vehicle is equipped with an Electro-Hydraulic Power Steering (EHPS) pump requiring a different fluid. Do not mix power steering fluid types. Damage may result to the power steering pump and system if any other fluid is used. The EHPS system uses fluid which meets material specification MS-11655 or equivalent. Do not overfill.

Note. All views typical.

  1. Position the return/cooler line assembly in the vehicle, start the return line fitting (2) in the gear (3) and tighten to 28 N.m (21 ft. lbs.).
  2. Connect the quick connect fittings.
  3. Install the return/cooler line assembly to cradle routing clip retainers and tighten to 12 N.m (9 ft. lbs./106 in. lb.).
  4. Install the cooler hoses and install the clamps (2).
  5. Install the grille. Refer to «GRILLE , INSTALLATION»(/jeep/grand-cherokee/wk2-2010-2013/remont/gauges-instrument-panels/#body-interior-exterior) .
  6. If equipped, install the front skid plate. Refer to «PLATE, SKID, FRONT , INSTALLATION»(/jeep/grand-cherokee/wk2-2010-2013/remont/frames-subframes-crossmembers/#frame-and-bumpers) .
  7. Remove the supports and lower the vehicle.
  8. Refill the power steering system with fluid and bleed the system. Refer to «STANDARD PROCEDURE»(/jeep/grand-cherokee/wk2-2010-2013/remont/manual-power-steering/#steering-system) .

Scheme 54

Scheme 54: REMOVAL
Scheme 54: REMOVAL
CAUTIONDo not reuse the old power steering pump pulley it is not intended for reuse. A new pulley must be installed if removed.
  1. Remove the power steering pump assembly. Refer to «PUMP , REMOVAL»(/jeep/grand-cherokee/wk2-2010-2013/remont/manual-power-steering/#steering-system) .
  2. Remove the pulley (2) from the pump (1) using (OTC® 7185) power steering pulley removal tool (3) or equivalent.

Scheme 55

Scheme 55: INSTALLATION
Scheme 55: INSTALLATION

Note. Power steering pulley (1) must only be installed to the first notch (2) on the pulley Do not install the pulley flush to the hub (3).

Scheme 56

Scheme 56
Scheme 56
CAUTIONDo not reuse the old power steering pump pulley it is not intended for reuse. A new pulley must be installed if removed.
  1. Replace the pulley if it's bent, cracked, or loose.
  2. Install the pulley (2) on the pump (1) using (OTC® 7771) power steering pulley installation tool (3) or equivalent to the first notch. Make sure the tool and pulley remain aligned with the pump shaft.
  3. Install the power steering pump assembly. Refer to «PUMP , INSTALLATION»(/jeep/grand-cherokee/wk2-2010-2013/remont/manual-power-steering/#steering-system) .
  4. Run engine until warm (5 min.) and note any belt chirp. If chirp exists, move pulley outward approximately 0.5 mm (0.020 in.). If noise increases, press on 1.0 mm (0.040 in.). Be careful that pulley does not contact mounting bolts.
  1. Siphon the power steering reservoir (2).
  2. Remove the two hose spring clamps and hoses (3) from the reservoir (2).
  3. Remove the reservoir retaining bolt (1).
  4. Remove the reservoir (2).
  1. Align the locating pin and position the reservoir (2) on the bracket.
  2. Install the reservoir retaining bolt (1) and tighten to 20 N.m (15 ft. lbs./177 in. lb.).
  3. Connect the two hoses (3) with the spring clamps to the reservoir (2).
  4. Fill with power steering fluid. Refer to «STANDARD PROCEDURE»(/jeep/grand-cherokee/wk2-2010-2013/remont/manual-power-steering/#steering-system) .