72526 - I80 HEADLAMP ALIGNMENT CORRECTOR NOT WORKING

The alignment of the headlamps is not corrected as the angle of the vehicle changes;
The alignment of the headlamps is corrected automatically and continuously by a Headlamp Alignment Corrector (C.A.F.) control unit.The correction of the headlamp alignment is activated by switching on the dipped headlamps; the C.A.F. control unit has an autodiagnostic function and, if the various components are faulty, the warning light (matrix message) in the Instrument Panel Node comes on.
STEPOPERATIONS TO BE CARRIED OUTTEST RESULTS
0PRELIMINARY CHECKALL OKPROBLEMS ENCOUNTEREDACTION
Check that the warning light (matrix message) is on. Move on to Step The warning light is off Move on to Step
1CHECK USING DIAGNOSTIC EQUIPMENTALL OKPROBLEMS ENCOUNTEREDACTION
Connect the Examiner diagnostic equipment to the diagnostic socket and check the following at the Headlamp Alignment Corrector control unit:

  • that there are no faults.
Move on to Step Presence of faultsContinue following the instructions for the diagnostic equipment
2ELECTRICAL SYSTEM CHECK.ALL OKPROBLEMS ENCOUNTEREDACTION
Check:

  • the presence of the C.A.F. control unit positive supply from the fuse in the dashboard junction unit
  • the presence of the positive go ahead from the dipped headlamps
  • the condition of the C.A.F. control unit connection to earth (Wiring Diagram ) E3080 HEADLAMP ALIGNMENT CORRECTOR
Move on to Step 1. No positive supply Move on to Step
Positive go ahead from dipped headlamps lacking Move on to Step
3. No connection to earth Move on to Step
3C.A.F. CONTROL UNIT SUPPLY ELECTRICAL SYSTEM CHECKALL OKPROBLEMS ENCOUNTEREDACTION
Check the continuity/insulation between:

  • C.A.F. control unit and intake connector at Body Computer Node (Wiring Diagram ) E3080 HEADLAMP ALIGNMENT CORRECTOR
Move on to Step Electrial connection interruptedRestore the electrical connection (Wiring Diagram ) E3080 HEADLAMP ALIGNMENT CORRECTOR
4DASHBOARD NODE INTERNAL TRACK CHECK ALL OKPROBLEMS ENCOUNTEREDACTION
Remove the Body Computer Node, dismantle it from the dashboard junction unit and check the continuity between:

  • input connector from C.A.F. and Body Computer Node/Junction Unit connector (Wiring Diagram ) E3080 HEADLAMP ALIGNMENT CORRECTOR
Move on to Step Electrial connection interruptedReplace body computer    See in Op. 5505A32 BODY COMPUTER - R.R.
5GO AHEAD FROM DIPPED HEADLAMPS ELECTRICAL SYSTEM CHECKALL OKPROBLEMS ENCOUNTEREDACTION
Check the continuity/insulation between:

  • C.A.F. control unit and input connector in dashboard junction unit (Wiring Diagram ) E3080 HEADLAMP ALIGNMENT CORRECTOR
Move on to Step Electrial connection interrupted restore the electrical connection (Wiring Diagram ) E3080 HEADLAMP ALIGNMENT CORRECTOR
6DASHBOARD JUNCTION UNIT INNER TRACK CHECKALL OKPROBLEMS ENCOUNTEREDACTION
Check the internal continuity between:

  • input connector from C.A.F. to left front dipped headlamp bulb fuse (Wiring Diagram ) E3080 HEADLAMP ALIGNMENT CORRECTOR
Move on to Step Electrial connection interruptedReplace the dashboard junction unit    See in Op. 5505A10 Junction UNIT - R.R.
7CONNECTION TO EARTH ELECTRICAL SYSTEM CHECKALL OKPROBLEMS ENCOUNTEREDACTION
Check the continuity/insulation between:

  • C.A.F. control unit and right front earth point (Wiring Diagram ) E3080 HEADLAMP ALIGNMENT CORRECTOR
Move on to Step Electrial connection interruptedrestore the electrical connection (Wiring Diagram ) E3080 HEADLAMP ALIGNMENT CORRECTOR
8CHECK ON CORRECT OPERATIONALL OKPROBLEMS ENCOUNTEREDACTION
Check that the fault is no longer presentFault persistsReplace the headlamp alignment corrector control unit     See in Op. 5540C50 Gas discharge LIGHT CLUSTER CORRECTION/ALIGNMENT CONTROL UNIT - R.R.