With the ignition ON, check for the presence at Pin 5 of the headlamp alignment corrector front potentiometer connector

See K001 HEADLAMP ALIGNMENT CORRECTOR FRONT POTENTIOMETER (CAF)

of a voltage of 5 V.

Move on to Step 5

If faults are present, restore the continuity of the wiring between the Master headlamp (left side) and the front potentiometer

See E3080 HEADLAMP AGLINMENT CORRECTOR

The test can be considered over

With the key ON, check for the presence at Pin 1 of the Master headlamp

See F010 LEFT HEADLAMP

of a voltage of 5 V

Replace the master headlamp

Op. 5540B81 LEFT GAS DISCHARGE LIGHT CLUSTER - R.R.

Check the fault disappears.

The test can be considered over

Replace the headlamp control unit

Op. 5540B42 CONTROL UNIT OF ONE GAS DISCHARGE LIGHT CLUSTER R R

With the ignition ON, check for the presence at Pin 5 of the headlamp alignment corrector rear potentiometer connector

See K002 HEADLAMP ALIGNMENT CORRECTOR REAR POTENTIOMETER (CAF)

of a voltage of 5 V.

Move on to Step 8

If faults are present, restore the continuity of the wiring between the Master headlamp (left side) and the rear potentiometer

See E3080 HEADLAMP AGLINMENT CORRECTOR

The test can be considered over

With the key ON, check for the presence at Pin 4 of the headlamp

See F010 LEFT HEADLAMP

of a voltage of 5 V.

Move on to Step 4

Replace the master headlamp

Op. 5540B81 LEFT GAS DISCHARGE LIGHT CLUSTER - R.R.

Check Pin 1 of the potentiometer connector

See K001 HEADLAMP ALIGNMENT CORRECTOR FRONT POTENTIOMETER (CAF)

for the presence of a negative signal.

Move on to Step 11

If faults are present, restore the continuity of the wiring between the Master headlamp (left side) and the front potentiometer

See E3080 HEADLAMP AGLINMENT CORRECTOR

The test can be considered over

With the key ON, check for the presence at Pin 4 of the headlamp

See F010 LEFT HEADLAMP

of an earth signal.

Move on to Step 4

Replace the master headlamp

Op. 5540B81 LEFT GAS DISCHARGE LIGHT CLUSTER - R.R.

Check Pin 1 of the potentiometer connector

See K002 HEADLAMP ALIGNMENT CORRECTOR REAR POTENTIOMETER (CAF)

for the presence of a negative signal.

Move on to Step 14

If faults are present, restore the continuity of the wiring between the Master headlamp (left side) and the rear potentiometer

See E3080 HEADLAMP AGLINMENT CORRECTOR

The test can be considered over

With the key ON, check for the presence at Pin 6 of the headlamp

See F010 LEFT HEADLAMP

of an earth signal.

Move on to Step 4

Replace the master headlamp

Op. 5540B81 LEFT GAS DISCHARGE LIGHT CLUSTER - R.R.

Turn the ignition key to the ON position.

Disconnect the front sensor connecting rod.

Connect a Voltmeter across Pin 2 of the headlamp 6-way connector

See F010 LEFT HEADLAMP

and the earth.

Check that the voltage varies from 0.5 to 4.5 when the sensor mobile axis is turned by hand.

Move on to Step 16

If faults are present, restore the continuity of the wiring between the Master headlamp (left side) and the front potentiometer

See E3080 HEADLAMP AGLINMENT CORRECTOR

The test can be considered over

Replace the sensor

Op. 5540C42 SENSOR FOR CORRECTING/ALIGNING GAS DISCHARGE LIGHTING UNITS ON FRONT SUSPENSION - R R

Turn the ignition key to the ON position.

Disconnect the rear sensor connecting rod.

Connect a Voltmeter across Pin 5 of the headlamp 6-way connector

See F010 LEFT HEADLAMP

and the earth.

Check that the voltage varies from 0.5 to 4.5 when the sensor mobile axis is turned by hand.

The test can be considered over

If faults are present, restore the continuity of the wiring between the Master headlamp (left side) and the rear potentiometer

See E3080 HEADLAMP AGLINMENT CORRECTOR

Replace the sensor

Op. 5540C46 SENSOR FOR CORRECTING/ALIGNING GAS DISCHARGE LIGHTING UNITS ON REAR SUSPENSION - R R