| | Test results |
| 0 | PRELIMINARY CHECKS | All OK | Problems encountered | Operation |
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| First of all, check the engine idle speed.Check the tyre pressure | Move on to Step 1 | 1. Engine idle irregular2. Tyre inflation pressure not correct | 1. Proceed as instructed See table D010 ENGINE IDLE IRREGULAR 2. Make sure tyres are inflated to the correct pressure |
| 1 | POWER UNIT SUPPORT MOUNTINGS CHECK | All OK | Problems encountered | Operation |
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| Check the condition of the mountings for the power unit, the engine reaction rod connected to the mechanical crossmember and that the mechanical crossmember is correctly centred | Move on to Step 2 | 1. Power unit support mountings faulty2. Reaction connecting rod faulty3. Mechanical crossmember faulty | 1. Adjust the fastenings: loosen the bolts, centre them in their housings and tighten them to the recommended torque. Op. 1008A POWER UNIT FASTENING 2. Adjust the fastenings: loosen the bolts, centre them in their housings and tighten them to the recommended torque. Op. 1008C POWER UNIT REACTION ELEMENTS 3. Adjust the fastenings: loosen the bolts, centre them in their housings and tighten them to the recommended torque. |
| 2 | STEERING COLUMN CHECK | All OK | Problems encountered | Operation |
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| Check the condition of the steering column mount and that it is working properly. In particular, check:- that there is no clearance between the support bushes and steering column;- correct tightening of steering column joints | Move on to Step 3 | 1. Bushes worn or damaged2. Joint spider clearance too large | 1. Restore the efficiency of the steering column. If necessary, replace the bearings involved2. Tighten the bolts or replace the steering column Op. 4110D20 STEERING ELECTRICAL CONTROL DEVICE - R R |
| 3 | STEERING WHEEL ADJUSTMENT DEVICE CHECK | All OK | Problems encountered | Operation |
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| Check the condition of the steering wheel adjustment device. In particular, check that the clearance between the device and the steering column is correct | Move on to Step 4 | Coupling with excessive clearance | Restore the efficiency of the steering wheel adjustment device. If necessary, replace it |
| 4 | TIMING CHECK | All OK | Problems encountered | Operation |
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| Check that the engine timing is correct | Move on to Step 5 | Timing not correct | Restore correct engine timing Op. 1032B10 TOOTHED TIMING BELT - R + R FOR TIMING ADJUSTMENT OR REPLACEMENT |
| 5 | FLYWHEEL BALANCING CHECK | All OK | Problems encountered | Operation |
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| Check that the flywheel is correctly balanced | End of diagnosis | Balancing not correct | Replace the flywheel Op. 1024B10 ENGINE FLYWHEEL - R + R FOR VERSIONS WITH MANUAL GEARBOX |
