| Test | TECH 1 | Notes | Nominal Values | Pin | Possible |
|---|---|---|---|---|---|
| Step | Display | Trouble | |||
| No. | Codes | ||||
| 22 | A/C COMPRESS. SW | Ignition ON | INACTIVE 0V | 40/19 | |
| Engine at idle speed | INACTIVE 0V | - | |||
| Vehicles with air conditioning, | ACTIVE 12V | ||||
| actuate air conditioning switch: | Compressor switches on |
The cable to Ter. 40 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. 40 in cable to Ter. 40
Ignition ON 0V
Vehicles with air conditioning
· Remove control unit plug
cable cover. Using multimeter, check voltage to · Short circuit to ground or interruption in cable
control unit Ter. 40. from control unit Ter. 40 to compressor
Engine at idle speed · Control unit defective
- Air conditioning OFF 0V
- Air conditioning ON 12V
Compressor switches on