| Test | TECH 1 | Notes | Nominal Values | Pin | Possible |
|---|---|---|---|---|---|
| Step | Display | Trouble | |||
| No. | Codes | ||||
| 21 | A/C INFORMAT. SW | Ignition ON | INACTIVE 0V | 41/19 | |
| Engine at idle speed | INACTIVE 0V | - | |||
| Vehicles with air conditioning, | |||||
| Actuate air conditioning switch: | ACTIVE 12V |
The cable to Ter. 41 on the control unit is present on all vehicles, but on vehicles without air conditioning it is unoccupied in the vehicle.
Trouble-shooting: Nominal Value: Cause of Fault:
(If nominal value is not attained)
Vehicles without air conditioning
· Remove control unit plug cable cover. · Short circuit to voltage
Using multimeter, measure voltage to Ter. 41 in cable to Ter. 41
Ignition ON 0V
Vehicles with air conditioning
· Remove control unit plug · Short circuit to ground in cable Ter. 41 to
cable cover. Using multimeter, check voltage air conditioning switch
to control unit Ter. 41. · Interruption in cable Ter. 41 to air
Engine at idle speed air conditioning switch
- Air conditioning OFF 0V · Control unit defective
- Air conditioning ON 12V