| | Test results |
| 1 | SERVICES RELAY POWER SUPPLY CHECK (POWER CIRCUIT) | All OK | Problems encountered | Operation |
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| Check that the services discharge relay is receiving the correct power supply from the battery.With the ignition ON, connect to the power supply for the relay from the Body Computer and check, when the electric windows are operated, that the supply is sent to the relay.Also check that the electrical connections between the Body Computer, battery and relay are not faulty See E3051 ELECTRIC REAR WINDOWS | Do not disconnect the relay |
| Move on to Step 2 | 1. No power supply from the battery2. Enablement for power supply not provided by the Body Computer3. Connections faulty | 1. Restore the correct power supply to the relay. If necessary, replace the faulty components (if a fuse is involved, first search for what has caused it to blow)2. Replace Body Computer Op. 5505A32 BODY COMPUTER - R.R 3. Restore the correct connections See E3051 ELECTRIC REAR WINDOWS |
| 2 | RELAY OUTPUT CHECK | All OK | Problems encountered | Operation |
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| With the ignition ON, connect to the relay output and check that, when the electric windows are operated, the power supply is sent to the electric windows circuit. Also check that the connections between the services relay and the Left/Right Rear Doors coupling is not faulty See E3051 ELECTRIC REAR WINDOWS | Move on to Step 3 | 1. The power supply is not sent to the circuit2. Connections faulty | 1. Replace the services relay2. Restore the correct connections |
| 3 | ELECTRIC WINDOWS CIRCUIT CHECK | All OK | Problems encountered | Operation |
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| The problem is due to several problems in the front electric windows circuit. Continue following the instructions for both electric windows, bearing in mind that the problems could be different for the two electric windows See table M011 ONE OF THE ELECTRIC REAR WINDOWS NOT WORKING | End of diagnosis | The fault persists | Contact technical service for further information on the problem |