| CHECK TO BE PERFORMED | RESOLUTION IF THE CHECK IS NOT OK |
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| 1 | Connect the diagnostic instrument in Voltmeter mode with the positive terminal connected to Pin C1 and the negative earthed to Pin A4 of the steering lock control unit. The direct battery voltage reading should be 12 Volts. See M089 STEERING LOCK CONTROL UNIT (NBS) | Restore wiring continuity See E7065 ELECTRIC STEERING LOCK |
| 2 | Insert a key in the key reader.Connect the diagnostic instrument in Voltmeter mode with the positive terminal connected to Pin A6 and the negative earthed. The direct battery voltage reading should be 12 Volts. See M089 STEERING LOCK CONTROL UNIT (NBS)Move on to Step 4 | Move on to Step 3 |
| 3 | Check whether the wiring is continuous between Pin 12 of the ignition device and control unit Pin A6. See H003 IGNITION DEVICE See M089 STEERING LOCK CONTROL UNIT (NBS)Repair if necessary See E7065 ELECTRIC STEERING LOCKThe test can be considered over | Continue as indicated See Test 5505AF CHECK OF THE EFFICIENCY OF KEY ACKNOWLEDGEMENT DEVICE |
| 4 | Disconnect the wiring connector from the control unit See M089 STEERING LOCK CONTROL UNIT (NBS)Connect the diagnostic instrument in Ohmmeter mode with one probe between Pin A5 of the control unit and Earth See M089 STEERING LOCK CONTROL UNIT (NBS)Press the clutch pedal and check for an earth signal.Move on to Step 6 | if no clutch signal is detected by the steering lock node, the car can still be started up by pressing the brake pedal |
| Move on to Step 5 |
| 5 | Check the continuity of the wiring between Pin 4 of the clutch pedal switch and control unit Pin A5. See I031 CLUTCH PEDAL SWITCH See M089 STEERING LOCK CONTROL UNIT (NBS)Repair if necessary See E7065 ELECTRIC STEERING LOCKIf necessary, replace the clutch pedal switchOp. 1056B78 or alternatively Op. 1060D42 SWITCH ON CLUTCH PEDAL- R. R (DIESEL ENGINES) The test can be considered over | Replace the steering lock node Op. 5580E17 STEERING LOCK - R.R |
| 6 | With the diagnostic instrument in Voltmeter mode, connect the positive probe to control unit Pin B7 and the negative to earth See M089 STEERING LOCK CONTROL UNIT (NBS)Press the clutch pedal.Press the ignition button.Check for a battery voltage signal of 12 Volts.Move on to Step 8 | Move on to Step 7 |
| 7 | Check whether or not there is continuity in the wiring between Pin B7 of the control unit and Pin 6 of the button See M089 STEERING LOCK CONTROL UNIT (NBS) See H2 STARTER BUTTONRepair if necessary See E7065 ELECTRIC STEERING LOCKThe test can be considered over | Replace the ignition button Op. 5520G30 START/STOP SWITCH FOR EASY-GO SYSTEM STARTER MOTOR - R.R. |
| 8 | Press the ignition button.With the diagnostic instrument in Voltmeter mode, connect the positive probe to control unit Pin B6 and the negative to earth See M089 STEERING LOCK CONTROL UNIT (NBS)Press the clutch pedal.Press the ignition button.Check for a battery voltage signal of 12 Volts.Move on to Step 10 | Move on to Step 9 |
| 9 | Check whether or not there is continuity in the wiring between Pin B6 of the control unit and Pin 4 of the button See M089 STEERING LOCK CONTROL UNIT (NBS) See H2 STARTER BUTTONRepair if necessary See E7065 ELECTRIC STEERING LOCKThe test can be considered over | Replace the ignition button Op. 5520G30 START/STOP SWITCH FOR EASY-GO SYSTEM STARTER MOTOR - R.R. |
| 10 | With the diagnostic instrument in Voltmeter mode, connect the positive probe to control unit Pin B1 and the negative to earth See M089 STEERING LOCK CONTROL UNIT (NBS)The direct voltage reading should be 12 Volt. | Replace the steering lock node Op. 5580E17 STEERING LOCK - R.R |
| 11 | With the diagnostic instrument in Voltmeter mode, connect the positive probe to control unit Pin A1 and the negative to earth See M089 STEERING LOCK CONTROL UNIT (NBS)The direct voltage reading should be 12 Volt. | Replace the steering lock node Op. 5580E17 STEERING LOCK - R.R |
| 12 | With the diagnostic instrument in Voltmeter mode, connect the positive probe to control unit Pin A8 and the negative to earth See M089 STEERING LOCK CONTROL UNIT (NBS)The direct voltage reading should be 12 Volt. | Replace the steering lock node Op. 5580E17 STEERING LOCK - R.R |
| 13 | With the diagnostic instrument in Voltmeter mode, connect the positive probe to control unit Pin B2 and the negative to earth See M089 STEERING LOCK CONTROL UNIT (NBS)The direct voltage reading should be 12 Volt. | Replace the steering lock node Op. 5580E17 STEERING LOCK - R.R |
| 14 | With the diagnostic instrument in Voltmeter mode, connect the positive probe to control unit Pin C8 and the negative to earth See M089 STEERING LOCK CONTROL UNIT (NBS)The direct voltage reading should be 12 Volt. | Replace the steering lock node Op. 5580E17 STEERING LOCK - R.R |
| 15 | With the diagnostic instrument in Voltmeter mode, connect the positive probe to control unit Pin B8 and the negative to earth See M089 STEERING LOCK CONTROL UNIT (NBS)Press the clutch pedal.Press the ignition button.Check for a battery voltage signal of 12 Volts. | Replace the steering lock node Op. 5580E17 STEERING LOCK - R.R |
| 16 | With the diagnostic instrument in Voltmeter mode, connect the positive probe to control unit Pin C4 and the negative to earth See M089 STEERING LOCK CONTROL UNIT (NBS)Press the brake pedal and the battery voltage reading should be 12 Volts.Release the brake pedal and the voltage reading should be 0 volts.Move on to Step 20 | Move on to Step 17 |
| 17 | Check whether or not there is continuity in the wiring between Pin 4 of the brake pedal switch and Pin C4 of the control unit. See I030 BRAKE PEDAL SWITCH See M089 STEERING LOCK CONTROL UNIT (NBS)Repair if necessary See E7065 ELECTRIC STEERING LOCKThe test can be considered over | Check the power supply is correct to the brake pedal switch and restore if necessary.Move on to Step 18 |
| 18 | Check the diagnostic instrument in parameter mode to ensure the brake pedal switch is operating correctly. | Replace the switch Op. 5550D10 BRAKE LIGHT SWITCH - R+R or alternatively Op. 1060D38 SWITCH ON BRAKE PEDAL - R.R (DIESEL ENGINES) |
| 19 | Replace the steering lock node Op. 5580E17 STEERING LOCK - R.R The test can be considered over | |
| 20 | With the diagnostic instrument in Voltmeter mode, connect the positive probe to control unit Pin C7 and the negative to earth See M089 STEERING LOCK CONTROL UNIT (NBS)Press the brake pedal and the battery voltage reading should be 0 Volts.Release the brake pedal and the voltage reading should be 12 volts. | Move on to Step 17 |
| 21 | With the diagnostic instrument in Voltmeter mode, connect the positive probe to control unit Pin C2 and the negative to earth See M089 STEERING LOCK CONTROL UNIT (NBS)Turn on the side lights and check for the presence of a PWM signal | Replace the steering lock node Op. 5580E17 STEERING LOCK - R.R |