2582464 - L51 HEATER NOT WORKING / AT DIFFERENT SPEEDS'

The heater works, but the air flow in the passenger compartment does not alter when the position of the speed selector is changed.
Results of the tests
1FAN CONTROL CHECKAll OKProblems metOperation
Check the continuity at the passenger compartment air fan control contacts See   E6010  HEATER Continue to Step 2Passenger compartment air fan control defective.Replace the control Op.   5020B22 
2ADJUSTMENT RESISTANCES CHECKAll OKProblems metOperation
Check the continuity of the passenger compartment air fan speed adjustment resistances See Test   5040CC  - Continue to Step 3Adjustment resistances open circuitReplace the resistance Op.   5020A44 
3CHECK ELECTRICAL CIRCUITAll OKProblems metOperation
Check the continuity of the connecting cables between the passenger compartment air fan control, the adjustment resistances and the fan motor See   E6010  HEATER Continue to Step 4Connections not correctRestore connections
4CHECK ON CORRECT OPERATIONAll OKProblems metOperation
Check that the fault is no longer presentFault persistsSearch for the fault starting from another symptom'