| | Test results |
| 0 | PRELIMINARY CHECKS | All OK | Problems encountered | Operation |
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| First of all, check the type, condition and pressure of the tyres.Check that the tyres are fitted correctly and the wheels are correctly secured. | Move on to Step 1 | 1. Tyre inflation pressure not correct.2. Tyres unsuitable or worn.3. Tyres not correctly fitted.4. Wheel not correctly fastened. | 1. Restore the correct tyre inflation pressure.2. Replace the tyres.3. Swap the front wheels round.4. Tighten the wheels correctly. |
| 1 | WHEEL CHECK | All OK | Problems encountered | Operation |
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| Check:- That the wheels are correctly balanced;- That the wheels turn freely (front brake calipers and rear drums correctly fitted). | Move on to Step 2 | 1. Wheels not balanced.2. Front brake calipers not correctly fitted.3. Rear brake calipers not correctly fitted. | 1. Balance the wheels.2. Restore the correct fitting or replace the brake calipers Op. 3310A30 FRONT BRAKE CALIPER (ONE) - R.R 3. Refit the rear drums correctly or replace them Op. 3320B30 REAR BRAKE DRUM (ONE), LEFT OR RIGHT - R.R. |
| 2 | FRONT GEOMETRY CHECK | All OK | Problems encountered | Operation |
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| Check the vehicle geometry and front wheel characteristic angles. Op. 4450A10 FRONT WHEEL GEOMETRY - CHECK USING OPTICAL EQUIPMENT - INCLUDES ADJUSTMENT IF NECESSARY | Move on to Step 3 | 1. Geometry not correct.2. Angles not correct. | 1. Replace the suspension springs Op. 4410A12 FRONT SUSPENSION DAMPER (ONE), LH OR RH - FOR MCPHERSON STRUT SYSTEM - INCLUDES DISMANTLING/REASSEMBLY OF ASSEMBLY AT BENCH - R.R 2. Restore the correct angles where possible. |
| 3 | REAR GEOMETRY CHECK | All OK | Problems encountered | Operation |
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| Check the vehicle geometry and rear wheel angles Op. 4450A40 REAR WHEEL GEOMETRY - CHECK USING OPTICAL EQUIPMENT, INCLUDES ADJUSTMENT IF NECESSARY | Move on to Step 4 | Geometry not correct. | Replace the suspension springs Op. 4420A40 L/H OR R/H REAR SUSPENSION COIL SPRING (ONE) - R+R |
| 4 | UNDERBODY CHECK | All OK | Problems encountered | Operation |
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| Visually inspect the underbody. Check that there are no accidental knocks, dents or bent suspension arms. | Move on to Step 5 | Damage to the front suspension in particular. | Restore or replace the damaged components. |
| 5 | WHEEL BEARINGS CHECK | All OK | Problems encountered | Operation |
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| Check the condition and the operation of the wheel hub bearings. | Move on to Step 6 | 1. Front wheel bearing worn or damaged.2. Rear wheel bearing worn or damaged. | 1. Replace the wheel hub bearing Op. 4450C32 ONE FRONT WHEEL HUB BEARING, LH OR RH - REPLACE 2. Replace the wheel hub bearing Op. 4450D36 BEARING FOR ONE REAR WHEEL HUB - R.R. |
| 6 | BUSHES AND FLEXIBLE MOUNTINGS CHECK - FRONT AREA | All OK | Problems encountered | Operation |
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| Check the condition of the bushes and mountings. In order:- steering box rods;- wishbone flexible supports;- flexible mountings for anti-roll bar. | Move on to Step 7 | 1. Steering box rods worn or damaged.2. Wishbone supports worn or damaged3. Anti-roll bar mountings worn or damaged. | 1. Replace the rods Op. 4110B10 STEERING LINKS - R+R ON VEHICLE - CHECK TOE-IN/TOE-OUT SEPARATELY 2. Replace the supports.3. Replace the mountings Op. 4410C12 FRONT SUSPENSION ANTI ROLL BAR JOINT (END) (ONE), LH OR RH - R.R |
| 7 | 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 8 | 1. Power unit support mountings faulty.2. Reaction connecting rod faulty.3. Mechanical crossmember faulty. | 1. Adjust the fastenings: loosen the bolts, centre them in their housings and tighten them to the recommended torque.2. Adjust the fastenings: loosen the bolts, centre them in their housings and tighten them to the recommended torque.3. Adjust the fastenings: loosen the bolts, centre them in their housings and tighten them to the recommended torque. |
| 8 | DIFFERENTIAL CHECK | All OK | Problems encountered | Operation |
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| Check the condition of the differential: make sure, in particular, that there is no clearance. | End of diagnosis. | Irregular operation of the differential. | Overhaul or replace the differential. |
