| 0 | PRELIMINARY CHECKS | ALL OK | PROBLEMS ENCOUNTERED | ACTION | 
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|  | Carry out a test steering fully in various conditions to check the actual onset of the hardening in one direction only.Visually inspect the power assisted steering fluid level in the reservoir. | Move on to Step 1 | 1. Hardening in both directions | 1. Proceed as instructed in the    See table H010  STEERING HARD / (STEERING IN BOTH DIRECTIONS) | 
| 2. Power assisted steering fluid level too low. | 2. Top up to the correct level, if there are leaks, continue as instructed in the    See table X030 POWER ASSISTED STEERING SYSTEM FLUID LEAKS | 
| 1 | STEERING RODS AND ARMS CHECK | ALL OK | PROBLEMS ENCOUNTERED | ACTION | 
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|  | Check the condition of the steering rods and arms | Move on to Step 2 | 1. Rods damaged or worn. | 1. Replace the rods    Op. 4110B10  STEERING LINKS - R+R ON VEHICLE - CHECK TOE-IN/TOE-OUT SEPARATELY | 
| 2. Arms damaged or worn. | 2. Replace the steering boxOp. 4120A10 | 
| 2 | RACK AND PINION CLEARANCE CHECK | ALL OK | PROBLEMS ENCOUNTERED | ACTION | 
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|  | Check the rack and pinion clearance with the steering column detached and the wheels straight. | Move on to Step 3 | Rack and pinion clearance too large. | Replace the steering boxOp. 4120A10 | 
| 3 | CHECK ON CORRECT TENSION OF DRIVE BELT AND CORRECT OPERATION OF POWER ASSISTED STEERING PUMP | ALL OK | PROBLEMS ENCOUNTERED | ACTION | 
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|  | Check that the tension of the power assisted steering pump drive belt is correct and that it is not worn.Also check that the power assisted steering pump is working properly. | Move on to Step 4 | 1. Belt not correctly tensioned. | 1. Restore correct belt tensionOp. 1092C12 | 
| 2. Belt worn. | 2. Replace the beltOp. 1092C11 | 
| 3. Power assisted steering pump malfunction. | 3. Replace the power assisted steering pumpOp. 4130B24 | 
| 4 | STEERING WHEEL RETURN CHECK | ALL OK | PROBLEMS ENCOUNTERED | ACTION | 
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|  | Refit all the components removed.Test the vehicle and check that the steering wheel returns correctly. | End of diagnosis | Poor steering wheel return. | Restore the correct front wheel geometry    Op. 4450A10  FRONT WHEEL GEOMETRY - CHECK USING OPTICAL EQUIPMENT - INCLUDES ADJUSTMENT IF NECESSARY |