| TEST RESULTS |
| 0 | PRELIMINARY CHECKS | ALL OK | PROBLEMS ENCOUNTERED | ACTION |
|---|
| Check the condition of the auxiliary drive belt and make sure the tension is correct.Check whether the noise remains constant when the electrical loads switched on increases | Move on to Step 1 | 1. Belt worn2. Tension not correct3. Noise increases | 1. Replace belt Op. 1092G10 SINGLE ENGINE BELT - R.R 2. Adjust the belt tension3. Move on to Step 1 |
| 1 | ALTERNATOR CHECK | ALL OK | PROBLEMS ENCOUNTERED | ACTION |
|---|
| Check that the alternator is working properly, in particular:- Voltage regulator- Connections between alternator and battery | Move on to Step 2 | 1. Voltage regulator defective2. Connections not correct | 1. Replace the pressure regulator Op. 5530A10 ALTERNATOR - R+R 2. Restore the correct connections. |
| 2 | AUXILIARY UNITS BELT CHECK | ALL OK | PROBLEMS ENCOUNTERED | ACTION |
|---|
| Check whether the noise disappears if the belt is disconnected | Move on to Step 3 | 1. The noise disappears.2. The noise remains constant. | 1. Move on to Step 32. Move on to Step 4 |
| 3 | AIR CONDITIONING COMPRESSOR CHECK | ALL OK | PROBLEMS ENCOUNTERED | ACTION |
|---|
| Check the operation of the air conditioning compressor. | Move on to Step 4 | Air conditioning compressor faulty. | Repair or replace the compressor Op. 5040A20 AIR CONDITIONING COMPRESSOR - R+R - INCLUDES FLUID LEVEL CHECK AND TOP UP IF NECESSARY |
| 4 | BELT TENSIONER CHECK | ALL OK | PROBLEMS ENCOUNTERED | ACTION |
|---|
| Check the condition of the belt tensioner bearings. | End of diagnosis | 1. Fixed belt tensioner faulty.2. Moving belt tensioner faulty. | 1. Replace fixed belt tensioner Op. 1092G20 ENGINE COMPONENT SINGLE BELT FIXED TENSIONER - R + R 2. Replace moving belt tensioner Op. 1092G14 ENGINE COMPONENT SINGLE BELT MOVING TENSIONER - R + R |
