| | Results of the tests |
| 1 | CHECKING WITH DIAGNOSTIC EQUIPMENT | All OK | Problems met | Operation |
|---|
| Connect
diagnostic equipment (Examiner or other instruments) to the diagnostic
socket. Check that there are no faults in the climate control control unit |
Continue to Step
2
| An error is detected in
the control unit | Continue following the instructions for the diagnostic
equipment
Continue to Step
4
|
| Lack of dialogue with the control unit |
Restore connection between climate control control unit
and diagnostic connector (
See E6020 AIR CONDITIONING
)
Continue
to Step
4
|
| Specific software not available |
Continue to Step
2
|
| 2 | CHECKING POWER SUPPLY | All OK | Problems met | Operation |
|---|
|
Check
that the climate control system control unit and the ICS control
button assembly are correctly supplied (
See E6020 AIR CONDITIONING
)
|
Continue to Step
3
| Connections not correct | Restore connections |
| Component defective | Replace the component involved (if a fuse is involved,
search for the cause of the problem) |
| 3 | CHECK ICS CONTROL UNIT COMMUNICATION | All OK | Problems met | Operation |
|---|
|
Check
the condition of the interface line between ICS pushbutton assembly
and climate control system control unit (
See E6020 AIR CONDITIONING
)
|
Continue to Step
4
| Connections not correct | Restore connections |
| Component defective | Replace the component involved (if it is a fuse, search
for the cause of the problem) |
| 4 | HECK ON CORRECT OPERATION | All OK | Problems met | Operation |
|---|
| Check
that the fault is no longer present | End of diagnosis | Fault persists | Search for the
fault starting from another symptom' |