| TEST RESULTS |
| 0 | PRELIMINARY CHECKS | ALL OK | PROBLEMS ENCOUNTERED | ACTION |
|---|
| Carry out a road test to check the conditions in which the noise occurs | Move on to Step 1 | 1. The noise is heard when braking2. The noise is heard when steering | 1. Move on to Step 12. Move on to Step 3 |
| 1 | BRAKE SERVO VACUUM VALVE CHECK | ALL OK | PROBLEMS ENCOUNTERED | ACTION |
|---|
| Check the condition of the one-way valve on the brake servo vacuum pipe | Move on to Step 2 | Brake servo valve fault | Replace the brake servo valve Op. 3330D20 SINGLE-ACTING VALVE FOR BRAKE SERVO - R+R |
| 2 | HYDRAULICALLY ASSISTED STEERING PUMP CHECK | ALL OK | PROBLEMS ENCOUNTERED | ACTION |
|---|
| With the engine running, turn the steering wheel to the end of travel in both directions | End of diagnosis | Pump noise | Replace hydraulically assisted steering pump Op. 4110D20 STEERING ELECTRICAL CONTROL DEVICE - R R |
